Commit Graph

1169681 Commits

Author SHA1 Message Date
Tejun Heo
d0093aaefa selftests/bpf: Add a test case for bpf_cgroup_from_id()
Add a test case for bpf_cgroup_from_id.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/Y/bBlt+tPozcQgws@slm.duckdns.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-02-23 08:33:43 -08:00
Tejun Heo
332ea1f697 bpf: Add bpf_cgroup_from_id() kfunc
cgroup ID is an userspace-visible 64bit value uniquely identifying a given
cgroup. As the IDs are used widely, it's useful to be able to look up the
matching cgroups. Add bpf_cgroup_from_id().

v2: Separate out selftest into its own patch as suggested by Alexei.

Signed-off-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/Y/bBaG96t0/gQl9/@slm.duckdns.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-02-23 08:33:05 -08:00
Danny Kaehn
37f5b858a6 HID: cp2112: Fix driver not registering GPIO IRQ chip as threaded
The CP2112 generates interrupts from a polling routine on a thread,
and can only support threaded interrupts. This patch configures the
gpiochip irq chip with this flag, disallowing consumers to request
a hard IRQ from this driver, which resulted in a segfault previously.

Signed-off-by: Danny Kaehn <kaehndan@gmail.com>
Link: https://lore.kernel.org/r/20230210170044.11835-1-kaehndan@gmail.com
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2023-02-23 16:45:38 +01:00
Juergen Gross
ad32ab9604 irqdomain: Add missing NULL pointer check in irq_domain_create_hierarchy()
The recent switch to per-domain locking caused a NULL dereference in
irq_domain_create_hierarchy(), as Xen code is calling
msi_create_irq_domain() with a NULL parent pointer.

Fix that by testing parent to be set before dereferencing it. For a
non-existing parent the irqdomain's root will stay to point to
itself.

Fixes: 9dbb8e3452 ("irqdomain: Switch to per-domain locking")
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230223083800.31347-1-jgross@suse.com
2023-02-23 15:52:28 +01:00
Thomas Gleixner
5931e4eb55 Merge branch 'irq/core' into irq/urgent
Pull in the upstream changes so a fix for them can be applied.
2023-02-23 15:49:31 +01:00
Benjamin Tissoires
22ef7d7be4 selftest: hid: fix hid_bpf not set in config
Now that CONFIG_HID_BPF is not automatically implied by HID, we need
to set it properly in the selftests config.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2023-02-23 15:45:25 +01:00
Geetha sowjanya
edea0c5a99 octeontx2-pf: Recalculate UDP checksum for ptp 1-step sync packet
When checksum offload is disabled in the driver via ethtool,
the PTP 1-step sync packets contain incorrect checksum, since
the stack calculates the checksum before driver updates
PTP timestamp field in the packet. This results in PTP packets
getting dropped at the other end. This patch fixes the issue by
re-calculating the UDP checksum after updating PTP
timestamp field in the driver.

Fixes: 2958d17a89 ("octeontx2-pf: Add support for ptp 1-step mode on CN10K silicon")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Link: https://lore.kernel.org/r/20230222113600.1965116-1-saikrishnag@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:56:30 +01:00
Paolo Abeni
1e30373ea5 Merge branch 'net-phy-eee-fixes'
Oleksij Rempel says:

====================
net: phy: EEE fixes

changes v3:
- add kernel test robot tags to commit log
- reword comment for genphy_c45_an_config_eee_aneg() function

changes v2:
- restore previous ethtool set logic for the case where advertisements
  are not provided by user space.
- use ethtool_convert_legacy_u32_to_link_mode() where possible
- genphy_c45_an_config_eee_aneg(): move adv initialization in to the if
  scope.

Different EEE related fixes.
====================

Link: https://lore.kernel.org/r/20230222055043.113711-1-o.rempel@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:43:26 +01:00
Oleksij Rempel
186b1da76b net: phy: c45: genphy_c45_ethtool_set_eee: validate EEE link modes
Currently, it is possible to let some PHYs to advertise not supported
EEE link modes. So, validate them before overwriting existing
configuration.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:43:23 +01:00
Oleksij Rempel
3eeca4e199 net: phy: do not force EEE support
With following patches:
commit 9b01c885be ("net: phy: c22: migrate to genphy_c45_write_eee_adv()")
commit 5827b16812 ("net: phy: c45: migrate to genphy_c45_write_eee_adv()")

we set the advertisement to potentially supported values. This behavior
may introduce new regressions on systems where EEE was disabled by
default (BIOS or boot loader configuration or by other ways.)

At same time, with this patches, we would overwrite EEE advertisement
configuration made over ethtool.

To avoid this issues, we need to cache initial and ethtool advertisement
configuration and store it for later use.

Fixes: 9b01c885be ("net: phy: c22: migrate to genphy_c45_write_eee_adv()")
Fixes: 5827b16812 ("net: phy: c45: migrate to genphy_c45_write_eee_adv()")
Fixes: 022c3f87f8 ("net: phy: add genphy_c45_ethtool_get/set_eee() support")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:43:23 +01:00
Oleksij Rempel
b6478b8c93 net: phy: c45: add genphy_c45_an_config_eee_aneg() function
Add new genphy_c45_an_config_eee_aneg() function and replace some of
genphy_c45_write_eee_adv() calls. This will be needed by the next patch.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:43:23 +01:00
Oleksij Rempel
e209519b62 net: phy: c45: use "supported_eee" instead of supported for access validation
Make sure we use proper variable to validate access to potentially not
supported registers. Otherwise we will get false read/write errors.

Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/oe-lkp/202302211644.c12d19de-yujie.liu@intel.com
Fixes: 022c3f87f8 ("net: phy: add genphy_c45_ethtool_get/set_eee() support")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 13:43:23 +01:00
Jani Nikula
5d2fdb255c Merge tag 'gvt-next-fixes-2023-02-23' of https://github.com/intel/gvt-linux into drm-intel-next-fixes
gvt-next-fixes-2023-02-23

- use debugfs attribute for gvt debugfs entries (Deepak R Varma)
- fix memory leak in vgpu destroy for debugfs_lookup() then remove (Greg KH)
- fix DRM_I915_GVT kconfig symbol to unbreak menu presentation (Randy Dunlap)
- fix typos (Deepak R Varma, Colin Ian King)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y/co4cy10KM1/2uX@debian-scheme
2023-02-23 14:05:43 +02:00
John Harrison
85636167e3 drm/i915: Don't use BAR mappings for ring buffers with LLC
Direction from hardware is that ring buffers should never be mapped
via the BAR on systems with LLC. There are too many caching pitfalls
due to the way BAR accesses are routed. So it is safest to just not
use it.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Fixes: 9d80841ea4 ("drm/i915: Allow ringbuffers to be bound anywhere")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.9+
Tested-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230216011101.1909009-3-John.C.Harrison@Intel.com
(cherry picked from commit 65c08339db)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-02-23 13:58:22 +02:00
John Harrison
690e0ec8e6 drm/i915: Don't use stolen memory for ring buffers with LLC
Direction from hardware is that stolen memory should never be used for
ring buffer allocations on platforms with LLC. There are too many
caching pitfalls due to the way stolen memory accesses are routed. So
it is safest to just not use it.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Fixes: c58b735fc7 ("drm/i915: Allocate rings from stolen")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.9+
Tested-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230216011101.1909009-2-John.C.Harrison@Intel.com
(cherry picked from commit f54c1f6c69)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-02-23 13:58:22 +02:00
Mavroudis Chatzilaridis
5e438bf7f9 drm/i915/quirks: Add inverted backlight quirk for HP 14-r206nv
This laptop uses inverted backlight PWM. Thus, without this quirk,
backlight brightness decreases as the brightness value increases and
vice versa.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8013
Cc: stable@vger.kernel.org
Signed-off-by: Mavroudis Chatzilaridis <mavchatz@protonmail.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230201184947.8835-1-mavchatz@protonmail.com
(cherry picked from commit 83e7d6fd33)
2023-02-23 13:58:14 +02:00
Matt Roper
33c2535493 drm/i915/xelpmp: Consider GSI offset when doing MCR lookups
MCR range tables use the final MMIO offset of a register (including the
0x380000 GSI offset when applicable).  Since the i915_mcr_reg_t passed
as a parameter during steering lookup does not include the GSI offset,
we need to add it back in for GSI registers before searching the tables.

Fixes: a7ec65fc7e ("drm/i915/xelpmp: Add multicast steering for media GT")
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230214001906.1477370-1-matthew.d.roper@intel.com
(cherry picked from commit d6683bbe70)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-02-23 13:52:33 +02:00
Dhruva Gole
078a5517d2 spi: spi-sn-f-ospi: fix duplicate flag while assigning to mode_bits
Replace the SPI_TX_OCTAL flag that appeared two time with SPI_RX_OCTAL
in the chain of '|' operators while assigning to mode_bits

Fixes: 1b74dd64c8 ("spi: Add Socionext F_OSPI SPI flash controller driver")

Reported-by: David Binderman <dcb314@hotmail.com>
Link: https://lore.kernel.org/all/DB6P189MB0568F3BE9384315F5C8C1A3E9CA49@DB6P189MB0568.EURP189.PROD.OUTLOOK.COM/

Cc: stable@vger.kernel.org
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Link: https://lore.kernel.org/r/20230223095202.924626-1-d-gole@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-02-23 11:40:17 +00:00
Hongbin Ji
152ac60677 spi: cadence-quadspi: Fix cancel the indirect read mask
This is to cancel the indirect read transfer process,
so should be use CQSPI_REG_INDIRECTRD_CANCEL_MASK

Signed-off-by: Hongbin Ji <jhb_ee@163.com>
Link: https://lore.kernel.org/r/20230222092128.4237-1-jhb_ee@163.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-02-23 11:40:16 +00:00
Matthias Kaehlcke
80d2c29e09 regulator: core: Use ktime_get_boottime() to determine how long a regulator was off
For regulators with 'off-on-delay-us' the regulator framework currently
uses ktime_get() to determine how long the regulator has been off
before re-enabling it (after a delay if needed). A problem with using
ktime_get() is that it doesn't account for the time the system is
suspended. As a result a regulator with a longer 'off-on-delay' (e.g.
500ms) that was switched off during suspend might still incurr in a
delay on resume before it is re-enabled, even though the regulator
might have been off for hours. ktime_get_boottime() accounts for
suspend time, use it instead of ktime_get().

Fixes: a8ce7bd896 ("regulator: core: Fix off_on_delay handling")
Cc: stable@vger.kernel.org    # 5.13+
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20230223003301.v2.1.I9719661b8eb0a73b8c416f9c26cf5bd8c0563f99@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-02-23 11:40:14 +00:00
Lee Jones
1c5d422124 HID: uhid: Over-ride the default maximum data buffer value with our own
The default maximum data buffer size for this interface is UHID_DATA_MAX
(4k).  When data buffers are being processed, ensure this value is used
when ensuring the sanity, rather than a value between the user provided
value and HID_MAX_BUFFER_SIZE (16k).

Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2023-02-23 11:52:05 +01:00
Lee Jones
b1a37ed00d HID: core: Provide new max_buffer_size attribute to over-ride the default
Presently, when a report is processed, its proposed size, provided by
the user of the API (as Report Size * Report Count) is compared against
the subsystem default HID_MAX_BUFFER_SIZE (16k).  However, some
low-level HID drivers allocate a reduced amount of memory to their
buffers (e.g. UHID only allocates UHID_DATA_MAX (4k) buffers), rending
this check inadequate in some cases.

In these circumstances, if the received report ends up being smaller
than the proposed report size, the remainder of the buffer is zeroed.
That is, the space between sizeof(csize) (size of the current report)
and the rsize (size proposed i.e. Report Size * Report Count), which can
be handled up to HID_MAX_BUFFER_SIZE (16k).  Meaning that memset()
shoots straight past the end of the buffer boundary and starts zeroing
out in-use values, often resulting in calamity.

This patch introduces a new variable into 'struct hid_ll_driver' where
individual low-level drivers can over-ride the default maximum value of
HID_MAX_BUFFER_SIZE (16k) with something more sympathetic to the
interface.

Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2023-02-23 11:51:56 +01:00
Patrisious Haddad
c749e3f82a net/mlx5: Fix memory leak in IPsec RoCE creation
During IPsec RoCE TX creation a struct for the flow group creation is
allocated, but never freed. Free that struct once it is no longer in use.

Fixes: 22551e77e5 ("net/mlx5: Configure IPsec steering for egress RoCEv2 traffic")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/a69739482cca7176d3a466f87bbf5af1250b09bb.1677056384.git.leon@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 11:19:28 +01:00
Lu Wei
44bd0394fe selftests: fib_tests: Add test cases for IPv4/IPv6 in route notify
Add tests to check whether the total fib info length is calculated
corretly in route notify process.

Signed-off-by: Lu Wei <luwei32@huawei.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230222083629.335683-3-luwei32@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 10:54:13 +01:00
Lu Wei
4cc59f3869 ipv6: Add lwtunnel encap size of all siblings in nexthop calculation
In function rt6_nlmsg_size(), the length of nexthop is calculated
by multipling the nexthop length of fib6_info and the number of
siblings. However if the fib6_info has no lwtunnel but the siblings
have lwtunnels, the nexthop length is less than it should be, and
it will trigger a warning in inet6_rt_notify() as follows:

WARNING: CPU: 0 PID: 6082 at net/ipv6/route.c:6180 inet6_rt_notify+0x120/0x130
......
Call Trace:
 <TASK>
 fib6_add_rt2node+0x685/0xa30
 fib6_add+0x96/0x1b0
 ip6_route_add+0x50/0xd0
 inet6_rtm_newroute+0x97/0xa0
 rtnetlink_rcv_msg+0x156/0x3d0
 netlink_rcv_skb+0x5a/0x110
 netlink_unicast+0x246/0x350
 netlink_sendmsg+0x250/0x4c0
 sock_sendmsg+0x66/0x70
 ___sys_sendmsg+0x7c/0xd0
 __sys_sendmsg+0x5d/0xb0
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc

This bug can be reproduced by script:

ip -6 addr add 2002::2/64 dev ens2
ip -6 route add 100::/64 via 2002::1 dev ens2 metric 100

for i in 10 20 30 40 50 60 70;
do
	ip link add link ens2 name ipv_$i type ipvlan
	ip -6 addr add 2002::$i/64 dev ipv_$i
	ifconfig ipv_$i up
done

for i in 10 20 30 40 50 60;
do
	ip -6 route append 100::/64 encap ip6 dst 2002::$i via 2002::1
dev ipv_$i metric 100
done

ip -6 route append 100::/64 via 2002::1 dev ipv_70 metric 100

This patch fixes it by adding nexthop_len of every siblings using
rt6_nh_nlmsg_size().

Fixes: beb1afac51 ("net: ipv6: Add support to dump multipath routes via RTA_MULTIPATH attribute")
Signed-off-by: Lu Wei <luwei32@huawei.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230222083629.335683-2-luwei32@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-23 10:54:13 +01:00
Miquel Raynal
f4440abc08 Merge tag 'nand/for-6.3' into mtd/next
NAND core changes:
* Check the data only read pattern only once
* Prepare the late addition of supported operation checks
* Support for sequential cache reads
* Fix nand_chip kdoc

Raw NAND changes:
* Fsl_elbc: Propagate HW ECC settings to HW
* Marvell: Add missing layouts
* Pasemi: Don't use static data to track per-device state
* Sunxi:
  - Fix the size of the last OOB region
  - Remove an unnecessary check
  - Remove an unnecessary check
  - Clean up chips after failed init
  - Precompute the ECC_CTL register value
  - Embed sunxi_nand_hw_ecc by value
  - Update OOB layout to match hardware
* tmio_nand: Remove driver
* vf610_nfc: Use regular comments for functions

SPI-NAND changes:
* Add support for AllianceMemory AS5F34G04SND
* Macronix: use scratch buffer for DMA operation

NAND ECC changes:
* Mediatek:
  - Add ECC support fot MT7986 IC
  - Add compatible for MT7986
  - dt-bindings: Split ECC engine with rawnand controller
2023-02-23 10:28:29 +01:00
Miquel Raynal
27121864ab Merge tag 'spi-nor/for-6.3' into mtd/next
SPI NOR changes:
* small fixes on core and spansion driver.
2023-02-23 10:27:32 +01:00
Josh Poimboeuf
00c8f01c4e objtool: Fix ORC 'signal' propagation
There have been some recently reported ORC unwinder warnings like:

  WARNING: can't access registers at entry_SYSCALL_64_after_hwframe+0x63/0xcd
  WARNING: stack going in the wrong direction? at __sys_setsockopt+0x2c6/0x5b0 net/socket.c:2271

And a KASAN warning:

  BUG: KASAN: stack-out-of-bounds in unwind_next_frame (arch/x86/include/asm/ptrace.h:136 arch/x86/kernel/unwind_orc.c:455)

It turns out the 'signal' bit isn't getting propagated from the unwind
hints to the ORC entries, making the unwinder confused at times.

Fixes: ffb1b4a410 ("x86/unwind/orc: Add 'signal' field to ORC metadata")
Reported-by: kernel test robot <oliver.sang@intel.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/97eef9db60cd86d376a9a40d49d77bb67a8f6526.1676579666.git.jpoimboe@kernel.org
2023-02-23 09:21:50 +01:00
Peter Zijlstra
1c34496e58 objtool: Remove instruction::list
Replace the instruction::list by allocating instructions in arrays of
256 entries and stringing them together by (amortized) find_insn().
This shrinks instruction by 16 bytes and brings it down to 128.

 struct instruction {
-	struct list_head           list;                 /*     0    16 */
-	struct hlist_node          hash;                 /*    16    16 */
-	struct list_head           call_node;            /*    32    16 */
-	struct section *           sec;                  /*    48     8 */
-	long unsigned int          offset;               /*    56     8 */
-	/* --- cacheline 1 boundary (64 bytes) --- */
-	long unsigned int          immediate;            /*    64     8 */
-	unsigned int               len;                  /*    72     4 */
-	u8                         type;                 /*    76     1 */
-
-	/* Bitfield combined with previous fields */
+	struct hlist_node          hash;                 /*     0    16 */
+	struct list_head           call_node;            /*    16    16 */
+	struct section *           sec;                  /*    32     8 */
+	long unsigned int          offset;               /*    40     8 */
+	long unsigned int          immediate;            /*    48     8 */
+	u8                         len;                  /*    56     1 */
+	u8                         prev_len;             /*    57     1 */
+	u8                         type;                 /*    58     1 */
+	s8                         instr;                /*    59     1 */
+	u32                        idx:8;                /*    60: 0  4 */
+	u32                        dead_end:1;           /*    60: 8  4 */
+	u32                        ignore:1;             /*    60: 9  4 */
+	u32                        ignore_alts:1;        /*    60:10  4 */
+	u32                        hint:1;               /*    60:11  4 */
+	u32                        save:1;               /*    60:12  4 */
+	u32                        restore:1;            /*    60:13  4 */
+	u32                        retpoline_safe:1;     /*    60:14  4 */
+	u32                        noendbr:1;            /*    60:15  4 */
+	u32                        entry:1;              /*    60:16  4 */
+	u32                        visited:4;            /*    60:17  4 */
+	u32                        no_reloc:1;           /*    60:21  4 */

-	u16                        dead_end:1;           /*    76: 8  2 */
-	u16                        ignore:1;             /*    76: 9  2 */
-	u16                        ignore_alts:1;        /*    76:10  2 */
-	u16                        hint:1;               /*    76:11  2 */
-	u16                        save:1;               /*    76:12  2 */
-	u16                        restore:1;            /*    76:13  2 */
-	u16                        retpoline_safe:1;     /*    76:14  2 */
-	u16                        noendbr:1;            /*    76:15  2 */
-	u16                        entry:1;              /*    78: 0  2 */
-	u16                        visited:4;            /*    78: 1  2 */
-	u16                        no_reloc:1;           /*    78: 5  2 */
+	/* XXX 10 bits hole, try to pack */

-	/* XXX 2 bits hole, try to pack */
-	/* Bitfield combined with next fields */
-
-	s8                         instr;                /*    79     1 */
-	struct alt_group *         alt_group;            /*    80     8 */
-	struct instruction *       jump_dest;            /*    88     8 */
-	struct instruction *       first_jump_src;       /*    96     8 */
+	/* --- cacheline 1 boundary (64 bytes) --- */
+	struct alt_group *         alt_group;            /*    64     8 */
+	struct instruction *       jump_dest;            /*    72     8 */
+	struct instruction *       first_jump_src;       /*    80     8 */
 	union {
-		struct symbol *    _call_dest;           /*   104     8 */
-		struct reloc *     _jump_table;          /*   104     8 */
-	};                                               /*   104     8 */
-	struct alternative *       alts;                 /*   112     8 */
-	struct symbol *            sym;                  /*   120     8 */
-	/* --- cacheline 2 boundary (128 bytes) --- */
-	struct stack_op *          stack_ops;            /*   128     8 */
-	struct cfi_state *         cfi;                  /*   136     8 */
+		struct symbol *    _call_dest;           /*    88     8 */
+		struct reloc *     _jump_table;          /*    88     8 */
+	};                                               /*    88     8 */
+	struct alternative *       alts;                 /*    96     8 */
+	struct symbol *            sym;                  /*   104     8 */
+	struct stack_op *          stack_ops;            /*   112     8 */
+	struct cfi_state *         cfi;                  /*   120     8 */

-	/* size: 144, cachelines: 3, members: 28 */
-	/* sum members: 142 */
-	/* sum bitfield members: 14 bits, bit holes: 1, sum bit holes: 2 bits */
-	/* last cacheline: 16 bytes */
+	/* size: 128, cachelines: 2, members: 29 */
+	/* sum members: 124 */
+	/* sum bitfield members: 22 bits, bit holes: 1, sum bit holes: 10 bits */
 };

pre:	5:38.18 real,   213.25 user,    124.90 sys,     23449040 mem
post:	5:03.34 real,   210.75 user,    88.80 sys,      20241232 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.851307606@infradead.org
2023-02-23 09:21:44 +01:00
Peter Zijlstra
6ea17e848a x86: Fix FILL_RETURN_BUFFER
With overlapping alternative validation fixed, objtool promptly
complains:

vmlinux.o: warning: objtool: __switch_to_asm+0x2c: stack layout conflict in alternatives: .altinstr_replacement+0x47

.rela.altinstructions:

000000000000009c  0000000200000002 R_X86_64_PC32          0000000000000000 .text + 16dc
00000000000000a0  0000000600000002 R_X86_64_PC32          0000000000000000 .altinstr_replacement + 3a
00000000000000a8  0000000200000002 R_X86_64_PC32          0000000000000000 .text + 16dc
00000000000000ac  0000000600000002 R_X86_64_PC32          0000000000000000 .altinstr_replacement + 66

.text:

00000000000016b0 <__switch_to_asm>:
    16b0:       f3 0f 1e fa             endbr64
    16b4:       55                      push   %rbp
    16b5:       53                      push   %rbx
    16b6:       41 54                   push   %r12
    16b8:       41 55                   push   %r13
    16ba:       41 56                   push   %r14
    16bc:       41 57                   push   %r15
    16be:       48 89 a7 18 0b 00 00    mov    %rsp,0xb18(%rdi)
    16c5:       48 8b a6 18 0b 00 00    mov    0xb18(%rsi),%rsp
    16cc:       48 8b 9e 28 05 00 00    mov    0x528(%rsi),%rbx
    16d3:       65 48 89 1c 25 00 00 00 00      mov    %rbx,%gs:0x0     16d8: R_X86_64_32S      fixed_percpu_data+0x28
    16dc:       eb 2a                   jmp    1708 <__switch_to_asm+0x58>
    16de:       90                      nop
    16df:       90                      nop
    16e0:       90                      nop
    16e1:       90                      nop
    16e2:       90                      nop
    16e3:       90                      nop
    16e4:       90                      nop
    16e5:       90                      nop
    16e6:       90                      nop
    16e7:       90                      nop
    16e8:       90                      nop
    16e9:       90                      nop
    16ea:       90                      nop
    16eb:       90                      nop
    16ec:       90                      nop
    16ed:       90                      nop
    16ee:       90                      nop
    16ef:       90                      nop
    16f0:       90                      nop
    16f1:       90                      nop
    16f2:       90                      nop
    16f3:       90                      nop
    16f4:       90                      nop
    16f5:       90                      nop
    16f6:       90                      nop
    16f7:       90                      nop
    16f8:       90                      nop
    16f9:       90                      nop
    16fa:       90                      nop
    16fb:       90                      nop
    16fc:       90                      nop
    16fd:       90                      nop
    16fe:       90                      nop
    16ff:       90                      nop
    1700:       90                      nop
    1701:       90                      nop
    1702:       90                      nop
    1703:       90                      nop
    1704:       90                      nop
    1705:       90                      nop
    1706:       90                      nop
    1707:       90                      nop
    1708:       41 5f                   pop    %r15
    170a:       41 5e                   pop    %r14
    170c:       41 5d                   pop    %r13
    170e:       41 5c                   pop    %r12
    1710:       5b                      pop    %rbx
    1711:       5d                      pop    %rbp
    1712:       e9 00 00 00 00          jmp    1717 <__switch_to_asm+0x67>      1713: R_X86_64_PLT32    __switch_to-0x4

.altinstr_replacement:

      3a:       49 c7 c4 10 00 00 00    mov    $0x10,%r12
      41:       e8 01 00 00 00          call   47 <.altinstr_replacement+0x47>
      46:       cc                      int3
      47:       e8 01 00 00 00          call   4d <.altinstr_replacement+0x4d>
      4c:       cc                      int3
      4d:       48 83 c4 10             add    $0x10,%rsp
      51:       49 ff cc                dec    %r12
      54:       75 eb                   jne    41 <.altinstr_replacement+0x41>
      56:       0f ae e8                lfence
      59:       65 48 c7 04 25 00 00 00 00 ff ff ff ff  movq   $0xffffffffffffffff,%gs:0x0      5e: R_X86_64_32S        pcpu_hot+0x10

      66:       e8 01 00 00 00          call   6c <.altinstr_replacement+0x6c>
      6b:       cc                      int3
      6c:       48 83 c4 08             add    $0x8,%rsp
      70:       0f ae e8                lfence

As can be seen from the two alternatives, when overlaid, the NOP after
the shorter (starting at 66) coinsides with the call at 47, leading to
conflicting CFI state for that instruction.

By offsetting the shorter alternative by 2 bytes, this alignment is
undone.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.783099843@infradead.org
2023-02-23 09:21:37 +01:00
Peter Zijlstra
a706bb08c8 objtool: Fix overlapping alternatives
Things like ALTERNATIVE_{2,3}() generate multiple alternatives on the
same place, objtool would override the first orig_alt_group with the
second (or third), failing to check the CFI among all the different
variants.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.711471461@infradead.org
2023-02-23 09:21:33 +01:00
Peter Zijlstra
c6f5dc28fb objtool: Union instruction::{call_dest,jump_table}
The instruction call_dest and jump_table members can never be used at
the same time, their usage depends on type.

 struct instruction {
 	struct list_head           list;                 /*     0    16 */
 	struct hlist_node          hash;                 /*    16    16 */
 	struct list_head           call_node;            /*    32    16 */
 	struct section *           sec;                  /*    48     8 */
 	long unsigned int          offset;               /*    56     8 */
 	/* --- cacheline 1 boundary (64 bytes) --- */
 	long unsigned int          immediate;            /*    64     8 */
 	unsigned int               len;                  /*    72     4 */
 	u8                         type;                 /*    76     1 */

 	/* Bitfield combined with previous fields */

 	u16                        dead_end:1;           /*    76: 8  2 */
 	u16                        ignore:1;             /*    76: 9  2 */
 	u16                        ignore_alts:1;        /*    76:10  2 */
 	u16                        hint:1;               /*    76:11  2 */
 	u16                        save:1;               /*    76:12  2 */
 	u16                        restore:1;            /*    76:13  2 */
 	u16                        retpoline_safe:1;     /*    76:14  2 */
 	u16                        noendbr:1;            /*    76:15  2 */
 	u16                        entry:1;              /*    78: 0  2 */
 	u16                        visited:4;            /*    78: 1  2 */
 	u16                        no_reloc:1;           /*    78: 5  2 */

 	/* XXX 2 bits hole, try to pack */
 	/* Bitfield combined with next fields */

 	s8                         instr;                /*    79     1 */
 	struct alt_group *         alt_group;            /*    80     8 */
-	struct symbol *            call_dest;            /*    88     8 */
-	struct instruction *       jump_dest;            /*    96     8 */
-	struct instruction *       first_jump_src;       /*   104     8 */
-	struct reloc *             jump_table;           /*   112     8 */
-	struct alternative *       alts;                 /*   120     8 */
+	struct instruction *       jump_dest;            /*    88     8 */
+	struct instruction *       first_jump_src;       /*    96     8 */
+	union {
+		struct symbol *    _call_dest;           /*   104     8 */
+		struct reloc *     _jump_table;          /*   104     8 */
+	};                                               /*   104     8 */
+	struct alternative *       alts;                 /*   112     8 */
+	struct symbol *            sym;                  /*   120     8 */
 	/* --- cacheline 2 boundary (128 bytes) --- */
-	struct symbol *            sym;                  /*   128     8 */
-	struct stack_op *          stack_ops;            /*   136     8 */
-	struct cfi_state *         cfi;                  /*   144     8 */
+	struct stack_op *          stack_ops;            /*   128     8 */
+	struct cfi_state *         cfi;                  /*   136     8 */

-	/* size: 152, cachelines: 3, members: 29 */
-	/* sum members: 150 */
+	/* size: 144, cachelines: 3, members: 28 */
+	/* sum members: 142 */
 	/* sum bitfield members: 14 bits, bit holes: 1, sum bit holes: 2 bits */
-	/* last cacheline: 24 bytes */
+	/* last cacheline: 16 bytes */
 };

pre:	5:39.35 real,   215.58 user,    123.69 sys,     23448736 mem
post:	5:38.18 real,   213.25 user,    124.90 sys,     23449040 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.640914454@infradead.org
2023-02-23 09:21:27 +01:00
Peter Zijlstra
0932dbe1f5 objtool: Remove instruction::reloc
Instead of caching the reloc for each instruction, only keep a
negative cache of not having a reloc (by far the most common case).

 struct instruction {
 	struct list_head           list;                 /*     0    16 */
 	struct hlist_node          hash;                 /*    16    16 */
 	struct list_head           call_node;            /*    32    16 */
 	struct section *           sec;                  /*    48     8 */
 	long unsigned int          offset;               /*    56     8 */
 	/* --- cacheline 1 boundary (64 bytes) --- */
 	long unsigned int          immediate;            /*    64     8 */
 	unsigned int               len;                  /*    72     4 */
 	u8                         type;                 /*    76     1 */

 	/* Bitfield combined with previous fields */

 	u16                        dead_end:1;           /*    76: 8  2 */
 	u16                        ignore:1;             /*    76: 9  2 */
 	u16                        ignore_alts:1;        /*    76:10  2 */
 	u16                        hint:1;               /*    76:11  2 */
 	u16                        save:1;               /*    76:12  2 */
 	u16                        restore:1;            /*    76:13  2 */
 	u16                        retpoline_safe:1;     /*    76:14  2 */
 	u16                        noendbr:1;            /*    76:15  2 */
 	u16                        entry:1;              /*    78: 0  2 */
 	u16                        visited:4;            /*    78: 1  2 */
+	u16                        no_reloc:1;           /*    78: 5  2 */

-	/* XXX 3 bits hole, try to pack */
+	/* XXX 2 bits hole, try to pack */
 	/* Bitfield combined with next fields */

 	s8                         instr;                /*    79     1 */
 	struct alt_group *         alt_group;            /*    80     8 */
 	struct symbol *            call_dest;            /*    88     8 */
 	struct instruction *       jump_dest;            /*    96     8 */
 	struct instruction *       first_jump_src;       /*   104     8 */
 	struct reloc *             jump_table;           /*   112     8 */
-	struct reloc *             reloc;                /*   120     8 */
+	struct alternative *       alts;                 /*   120     8 */
 	/* --- cacheline 2 boundary (128 bytes) --- */
-	struct alternative *       alts;                 /*   128     8 */
-	struct symbol *            sym;                  /*   136     8 */
-	struct stack_op *          stack_ops;            /*   144     8 */
-	struct cfi_state *         cfi;                  /*   152     8 */
+	struct symbol *            sym;                  /*   128     8 */
+	struct stack_op *          stack_ops;            /*   136     8 */
+	struct cfi_state *         cfi;                  /*   144     8 */

-	/* size: 160, cachelines: 3, members: 29 */
-	/* sum members: 158 */
-	/* sum bitfield members: 13 bits, bit holes: 1, sum bit holes: 3 bits */
-	/* last cacheline: 32 bytes */
+	/* size: 152, cachelines: 3, members: 29 */
+	/* sum members: 150 */
+	/* sum bitfield members: 14 bits, bit holes: 1, sum bit holes: 2 bits */
+	/* last cacheline: 24 bytes */
 };

pre:	5:48.89 real,   220.96 user,    127.55 sys,     24834672 mem
post:	5:39.35 real,   215.58 user,    123.69 sys,     23448736 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.572145269@infradead.org
2023-02-23 09:21:17 +01:00
Peter Zijlstra
8b2de41215 objtool: Shrink instruction::{type,visited}
Since we don't have that many types in enum insn_type, force it into a
u8 and re-arrange member to get rid of the holes, saves another 8
bytes.

 struct instruction {
 	struct list_head           list;                 /*     0    16 */
 	struct hlist_node          hash;                 /*    16    16 */
 	struct list_head           call_node;            /*    32    16 */
 	struct section *           sec;                  /*    48     8 */
 	long unsigned int          offset;               /*    56     8 */
 	/* --- cacheline 1 boundary (64 bytes) --- */
-	unsigned int               len;                  /*    64     4 */
-	enum insn_type             type;                 /*    68     4 */
-	long unsigned int          immediate;            /*    72     8 */
-	u16                        dead_end:1;           /*    80: 0  2 */
-	u16                        ignore:1;             /*    80: 1  2 */
-	u16                        ignore_alts:1;        /*    80: 2  2 */
-	u16                        hint:1;               /*    80: 3  2 */
-	u16                        save:1;               /*    80: 4  2 */
-	u16                        restore:1;            /*    80: 5  2 */
-	u16                        retpoline_safe:1;     /*    80: 6  2 */
-	u16                        noendbr:1;            /*    80: 7  2 */
-	u16                        entry:1;              /*    80: 8  2 */
+	long unsigned int          immediate;            /*    64     8 */
+	unsigned int               len;                  /*    72     4 */
+	u8                         type;                 /*    76     1 */

-	/* XXX 7 bits hole, try to pack */
+	/* Bitfield combined with previous fields */

-	s8                         instr;                /*    82     1 */
-	u8                         visited;              /*    83     1 */
+	u16                        dead_end:1;           /*    76: 8  2 */
+	u16                        ignore:1;             /*    76: 9  2 */
+	u16                        ignore_alts:1;        /*    76:10  2 */
+	u16                        hint:1;               /*    76:11  2 */
+	u16                        save:1;               /*    76:12  2 */
+	u16                        restore:1;            /*    76:13  2 */
+	u16                        retpoline_safe:1;     /*    76:14  2 */
+	u16                        noendbr:1;            /*    76:15  2 */
+	u16                        entry:1;              /*    78: 0  2 */
+	u16                        visited:4;            /*    78: 1  2 */

-	/* XXX 4 bytes hole, try to pack */
+	/* XXX 3 bits hole, try to pack */
+	/* Bitfield combined with next fields */

-	struct alt_group *         alt_group;            /*    88     8 */
-	struct symbol *            call_dest;            /*    96     8 */
-	struct instruction *       jump_dest;            /*   104     8 */
-	struct instruction *       first_jump_src;       /*   112     8 */
-	struct reloc *             jump_table;           /*   120     8 */
+	s8                         instr;                /*    79     1 */
+	struct alt_group *         alt_group;            /*    80     8 */
+	struct symbol *            call_dest;            /*    88     8 */
+	struct instruction *       jump_dest;            /*    96     8 */
+	struct instruction *       first_jump_src;       /*   104     8 */
+	struct reloc *             jump_table;           /*   112     8 */
+	struct reloc *             reloc;                /*   120     8 */
 	/* --- cacheline 2 boundary (128 bytes) --- */
-	struct reloc *             reloc;                /*   128     8 */
-	struct alternative *       alts;                 /*   136     8 */
-	struct symbol *            sym;                  /*   144     8 */
-	struct stack_op *          stack_ops;            /*   152     8 */
-	struct cfi_state *         cfi;                  /*   160     8 */
+	struct alternative *       alts;                 /*   128     8 */
+	struct symbol *            sym;                  /*   136     8 */
+	struct stack_op *          stack_ops;            /*   144     8 */
+	struct cfi_state *         cfi;                  /*   152     8 */

-	/* size: 168, cachelines: 3, members: 29 */
-	/* sum members: 162, holes: 1, sum holes: 4 */
-	/* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */
-	/* last cacheline: 40 bytes */
+	/* size: 160, cachelines: 3, members: 29 */
+	/* sum members: 158 */
+	/* sum bitfield members: 13 bits, bit holes: 1, sum bit holes: 3 bits */
+	/* last cacheline: 32 bytes */
 };

pre:	5:48.86 real,   220.30 user,    128.34 sys,     24834672 mem
post:	5:48.89 real,   220.96 user,    127.55 sys,     24834672 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.501847188@infradead.org
2023-02-23 09:21:12 +01:00
Peter Zijlstra
d540665461 objtool: Make instruction::alts a single-linked list
struct instruction {
 	struct list_head           list;                 /*     0    16 */
 	struct hlist_node          hash;                 /*    16    16 */
 	struct list_head           call_node;            /*    32    16 */
 	struct section *           sec;                  /*    48     8 */
 	long unsigned int          offset;               /*    56     8 */
 	/* --- cacheline 1 boundary (64 bytes) --- */
 	unsigned int               len;                  /*    64     4 */
 	enum insn_type             type;                 /*    68     4 */
 	long unsigned int          immediate;            /*    72     8 */
 	u16                        dead_end:1;           /*    80: 0  2 */
 	u16                        ignore:1;             /*    80: 1  2 */
 	u16                        ignore_alts:1;        /*    80: 2  2 */
 	u16                        hint:1;               /*    80: 3  2 */
 	u16                        save:1;               /*    80: 4  2 */
 	u16                        restore:1;            /*    80: 5  2 */
 	u16                        retpoline_safe:1;     /*    80: 6  2 */
 	u16                        noendbr:1;            /*    80: 7  2 */
 	u16                        entry:1;              /*    80: 8  2 */

 	/* XXX 7 bits hole, try to pack */

 	s8                         instr;                /*    82     1 */
 	u8                         visited;              /*    83     1 */

 	/* XXX 4 bytes hole, try to pack */

 	struct alt_group *         alt_group;            /*    88     8 */
 	struct symbol *            call_dest;            /*    96     8 */
 	struct instruction *       jump_dest;            /*   104     8 */
 	struct instruction *       first_jump_src;       /*   112     8 */
 	struct reloc *             jump_table;           /*   120     8 */
 	/* --- cacheline 2 boundary (128 bytes) --- */
 	struct reloc *             reloc;                /*   128     8 */
-	struct list_head           alts;                 /*   136    16 */
-	struct symbol *            sym;                  /*   152     8 */
-	struct stack_op *          stack_ops;            /*   160     8 */
-	struct cfi_state *         cfi;                  /*   168     8 */
+	struct alternative *       alts;                 /*   136     8 */
+	struct symbol *            sym;                  /*   144     8 */
+	struct stack_op *          stack_ops;            /*   152     8 */
+	struct cfi_state *         cfi;                  /*   160     8 */

-	/* size: 176, cachelines: 3, members: 29 */
-	/* sum members: 170, holes: 1, sum holes: 4 */
+	/* size: 168, cachelines: 3, members: 29 */
+	/* sum members: 162, holes: 1, sum holes: 4 */
 	/* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */
-	/* last cacheline: 48 bytes */
+	/* last cacheline: 40 bytes */
 };

pre:	5:58.50 real,   229.64 user,    128.65 sys,     26221520 mem
post:	5:48.86 real,   220.30 user,    128.34 sys,     24834672 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.430556498@infradead.org
2023-02-23 09:21:06 +01:00
Peter Zijlstra
3ee88df1b0 objtool: Make instruction::stack_ops a single-linked list
struct instruction {
 	struct list_head           list;                 /*     0    16 */
 	struct hlist_node          hash;                 /*    16    16 */
 	struct list_head           call_node;            /*    32    16 */
 	struct section *           sec;                  /*    48     8 */
 	long unsigned int          offset;               /*    56     8 */
 	/* --- cacheline 1 boundary (64 bytes) --- */
 	unsigned int               len;                  /*    64     4 */
 	enum insn_type             type;                 /*    68     4 */
 	long unsigned int          immediate;            /*    72     8 */
 	u16                        dead_end:1;           /*    80: 0  2 */
 	u16                        ignore:1;             /*    80: 1  2 */
 	u16                        ignore_alts:1;        /*    80: 2  2 */
 	u16                        hint:1;               /*    80: 3  2 */
 	u16                        save:1;               /*    80: 4  2 */
 	u16                        restore:1;            /*    80: 5  2 */
 	u16                        retpoline_safe:1;     /*    80: 6  2 */
 	u16                        noendbr:1;            /*    80: 7  2 */
 	u16                        entry:1;              /*    80: 8  2 */

 	/* XXX 7 bits hole, try to pack */

 	s8                         instr;                /*    82     1 */
 	u8                         visited;              /*    83     1 */

 	/* XXX 4 bytes hole, try to pack */

 	struct alt_group *         alt_group;            /*    88     8 */
 	struct symbol *            call_dest;            /*    96     8 */
 	struct instruction *       jump_dest;            /*   104     8 */
 	struct instruction *       first_jump_src;       /*   112     8 */
 	struct reloc *             jump_table;           /*   120     8 */
 	/* --- cacheline 2 boundary (128 bytes) --- */
 	struct reloc *             reloc;                /*   128     8 */
 	struct list_head           alts;                 /*   136    16 */
 	struct symbol *            sym;                  /*   152     8 */
-	struct list_head           stack_ops;            /*   160    16 */
-	struct cfi_state *         cfi;                  /*   176     8 */
+	struct stack_op *          stack_ops;            /*   160     8 */
+	struct cfi_state *         cfi;                  /*   168     8 */

-	/* size: 184, cachelines: 3, members: 29 */
-	/* sum members: 178, holes: 1, sum holes: 4 */
+	/* size: 176, cachelines: 3, members: 29 */
+	/* sum members: 170, holes: 1, sum holes: 4 */
 	/* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */
-	/* last cacheline: 56 bytes */
+	/* last cacheline: 48 bytes */
 };

pre:	5:58.22 real,   226.69 user,    131.22 sys,     26221520 mem
post:	5:58.50 real,   229.64 user,    128.65 sys,     26221520 mem

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.362196959@infradead.org
2023-02-23 09:20:59 +01:00
Peter Zijlstra
20a554638d objtool: Change arch_decode_instruction() signature
In preparation to changing struct instruction around a bit, avoid
passing it's members by pointer and instead pass the whole thing.

A cleanup in it's own right too.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build only
Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run
Link: https://lore.kernel.org/r/20230208172245.291087549@infradead.org
2023-02-23 09:20:50 +01:00
Ingo Molnar
585a78c1f7 Merge branch 'linus' into objtool/core, to pick up Xen dependencies
Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2023-02-23 09:16:39 +01:00
Randy Dunlap
0b93efca36 drm/i915: move a Kconfig symbol to unbreak the menu presentation
Inserting a Kconfig symbol that does not have a dependency (DRM_I915_GVT)
into a list of other symbols that do have a dependency (on DRM_I915)
breaks the driver menu presentation in 'make *config'.

Relocate the DRM_I915_GVT symbol so that it does not cause this
problem.

Fixes: 8b750bf744 ("drm/i915/gvt: move the gvt code into kvmgt.ko")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: intel-gvt-dev@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20230215044533.4847-1-rdunlap@infradead.org
2023-02-23 13:46:39 +08:00
Colin Ian King
9203a648c9 i915/gvt: Fix spelling mistake "vender" -> "vendor"
There is a spelling mistake in a literal string. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20230202125018.285523-1-colin.i.king@gmail.com
2023-02-23 13:45:30 +08:00
Greg Kroah-Hartman
d989bf543d i915: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: intel-gvt-dev@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20230202141309.2293834-1-gregkh@linuxfoundation.org
2023-02-23 13:42:13 +08:00
Deepak R Varma
dd62071ff7 drm/i915/gvt: Remove extra semicolon
Remove the extra semicolon at end. Issue identified using
semicolon.cocci Coccinelle semantic patch.

Signed-off-by: Deepak R Varma <drv@mailo.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/Y8LNbzgTf/1kYJX/@ubun2204.myguest.virtualbox.org
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2023-02-23 13:27:29 +08:00
Deepak R Varma
84edc94edb drm/i915/gvt: Avoid full proxy f_ops for debugfs attributes
Using DEFINE_SIMPLE_ATTRIBUTE macro with the debugfs_create_file()
function adds the overhead of introducing a proxy file operation
functions to wrap the original read/write inside file removal protection
functions. This adds significant overhead in terms of introducing and
managing the proxy factory file operations structure and function
wrapping at runtime.
As a replacement, a combination of DEFINE_DEBUGFS_ATTRIBUTE macro paired
with debugfs_create_file_unsafe() is suggested to be used instead.  The
DEFINE_DEBUGFS_ATTRIBUTE utilises debugfs_file_get() and
debugfs_file_put() wrappers to protect the original read and write
function calls for the debug attributes. There is no need for any
runtime proxy file operations to be managed by the debugfs core.
Following coccicheck make command helped identify this change:

make coccicheck M=drivers/gpu/drm/i915/ MODE=patch COCCI=./scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci

Signed-off-by: Deepak R Varma <drv@mailo.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/Y8hVK6wuqm50iADP@ubun2204.myguest.virtualbox.org
2023-02-23 13:26:59 +08:00
Jakub Kicinski
fd2a55e74a Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

1) Fix broken listing of set elements when table has an owner.

2) Fix conntrack refcount leak in ctnetlink with related conntrack
   entries, from Hangyu Hua.

3) Fix use-after-free/double-free in ctnetlink conntrack insert path,
   from Florian Westphal.

4) Fix ip6t_rpfilter with VRF, from Phil Sutter.

5) Fix use-after-free in ebtables reported by syzbot, also from Florian.

6) Use skb->len in xt_length to deal with IPv6 jumbo packets,
   from Xin Long.

7) Fix NETLINK_LISTEN_ALL_NSID with ctnetlink, from Florian Westphal.

8) Fix memleak in {ip_,ip6_,arp_}tables in ENOMEM error case,
   from Pavel Tikhomirov.

* git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: x_tables: fix percpu counter block leak on error path when creating new netns
  netfilter: ctnetlink: make event listener tracking global
  netfilter: xt_length: use skb len to match in length_mt6
  netfilter: ebtables: fix table blob use-after-free
  netfilter: ip6t_rpfilter: Fix regression with VRF interfaces
  netfilter: conntrack: fix rmmod double-free race
  netfilter: ctnetlink: fix possible refcount leak in ctnetlink_create_conntrack()
  netfilter: nf_tables: allow to fetch set elements when table has an owner
====================

Link: https://lore.kernel.org/r/20230222092137.88637-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-22 21:25:23 -08:00
Íñigo Huguet
67d93ffc0f ptp: vclock: use mutex to fix "sleep on atomic" bug
vclocks were using spinlocks to protect access to its timecounter and
cyclecounter. Access to timecounter/cyclecounter is backed by the same
driver callbacks that are used for non-virtual PHCs, but the usage of
the spinlock imposes a new limitation that didn't exist previously: now
they're called in atomic context so they mustn't sleep.

Some drivers like sfc or ice may sleep on these callbacks, causing
errors like "BUG: scheduling while atomic: ptp5/25223/0x00000002"

Fix it replacing the vclock's spinlock by a mutex. It fix the mentioned
bug and it doesn't introduce longer delays.

I've tested synchronizing various different combinations of clocks:
- vclock->sysclock
- sysclock->vclock
- vclock->vclock
- hardware PHC in different NIC -> vclock
- created 4 vclocks and launch 4 parallel phc2sys processes with
  lockdep enabled

In all cases, comparing the delays reported by phc2sys, they are in the
same range of values than before applying the patch.

Link: https://lore.kernel.org/netdev/69d0ff33-bd32-6aa5-d36c-fbdc3c01337c@redhat.com/
Fixes: 5d43f951b1 ("ptp: add ptp virtual clock driver framework")
Reported-by: Yalin Li <yalli@redhat.com>
Suggested-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/20230221130616.21837-1-ihuguet@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-22 21:23:48 -08:00
Zhong Jinghua
9f6ad5d533 loop: loop_set_status_from_info() check before assignment
In loop_set_status_from_info(), lo->lo_offset and lo->lo_sizelimit should
be checked before reassignment, because if an overflow error occurs, the
original correct value will be changed to the wrong value, and it will not
be changed back.

More, the original patch did not solve the problem, the value was set and
ioctl returned an error, but the subsequent io used the value in the loop
driver, which still caused an alarm:

loop_handle_cmd
 do_req_filebacked
  loff_t pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
  lo_rw_aio
   cmd->iocb.ki_pos = pos

Fixes: c490a0b5a4 ("loop: Check for overflow while configuring loop")
Signed-off-by: Zhong Jinghua <zhongjinghua@huawei.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20230221095027.3656193-1-zhongjinghua@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-02-22 20:43:09 -07:00
Linus Torvalds
a5c95ca18a Merge tag 'drm-next-2023-02-23' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
 "There are a bunch of changes all over in the usual places.

  Highlights:

   - habanalabs moves from misc to accel

   - first accel driver for Intel VPU (Versatile Processing Unit)
     inference engine

   - dropped all the ancient legacy DRI1 drivers. I think it's been at
     least 10 years since anyone has heard about these.

   - Intel DG2 updates and prelim Meteorlake enablement

   - etnaviv adds support for Versilicon NPU device (a GPU like engine
     with inference accelerators)

  Detailed summary:

  Removals:
   - remove legacy dri1 drivers: i810, mga, r128, savage, sis, tdfx, via

  New driver:
   - intel VPU accelerator driver
   - habanalabs comes via drm tree now

  drm/core:
   - use drm_dbg_ helpers in several places
   - Document defaults for CRTC backgrounds
   - Document use of drm_minor

  edid:
   - improve mode parsing and refactoring

  connector:
   - support analog TV mode property

  media:
   - add some common formats

  udmabuf:
   - add vmap/vunmap methods

  fourcc:
   - add XRGB1555 and RGB565 formats
   - document open source user waiver

  firmware:
   - fix color-format selection for system framebuffer

  format-helper:
   - Add conversion from XRGB8888 to various sysfb formats
   - Make XRGB8888 the only driver-emulated legacy format
   - Add conversion from XRGB8888 to XBGR8888 and ABGR8888

  fb-helper:
   - fix preferred depth and bpp values across drivers
   - Avoid blank consoles from selecting an incorrect color format

  probe-helper:
   - Enable/disable HPD on connectors

  scheduler:
   - Fix lockup in drm_sched_entity_kill()
   - Deprecate drm_sched_resubmit_jobs()

  bridge:
   - remove unused functions
   - implement i2c probe_new in various drivers
   - ite-it6505: Locking fixes, Cache EDID data
   - ite-it66121: Support IT6610 chip
   - lontium-tl9611: Fix HDMI on DragonBoard 845c
   - parade-ps8640: Use atomic bridge functions
   - Support i.MX93 LDB plus DT bindings

  debugfs:
   - add per device helpers and convert drivers

  displayport:
   - mst fixes
   - add DP adaptive sync DPCD definitions

  fbdev:
   - always pick 32bpp as default
   - remove some unused code

  simpledrm:
   - support system memory framebuffers

  panel:
   - add orientation quirks for Lenovo Yoga Tab 3 X90F and DynaBook K50
   - Use ktime_get_boottime() to measure power-down delay
   - Fix auto-suspend delay
   - Visionox VTDR6130 AMOLED DSI
   - Support Himax HX8394
   - Convert many drivers to common generic DSI write-sequence helper
   - AUO A030JTN01

  ttm:
   - drop bo wait wrapper
   - fix MIPS build

  habanalabs:
   - moved driver to accel subsystem
   - gaudi2 decoder error improvement
   - more trace events
   - Gaudi2 abrupt reset by firmware support
   - add uAPI to flush memory transactions
   - add uAPI to pass through userspace reqs to fw
   - remove dma-buf export by handle

  amdgpu:
   - add new INFO queries for peak and min sclk/mclk for profile modes
   - Add PCIe info to the INFO IOCTL
   - secure display support for multiple displays
   - DML optimizations
   - DCN 3.2 updates
   - PSR updates
   - DP 2.1 updates
   - SR-IOV RAS updates
   - VCN RAS support
   - SMU 13.x updates
   - Switch 1 element arrays to flexible arrays
   - Add RAS support for DF 4.3
   - Stack size improvements
   - S0ix rework
   - Allow 0 as a vram limit on APUs
   - Handle profiling modes for SMU13.x
   - Fix possible segfault in failure case
   - Rework FW requests to happen in early_init for all IPs so that we
     don't lose the sbios console if FW is missing
   - Fix power reporting on certain firmwares for CZN/RN
   - Allow S0ix without BIOS support
   - Enable freesync over PCon
   - Re-enable the AGP aperture on GMC 11.x

  amdkfd:
   - Error handling fixes
   - PASID fixes
   - Fix for cleared VRAM BOs
   - Fix cleanup if GPUVM creation fails
   - Memory accounting fix
   - Use resource_size rather than open codeing it
   - GC11 mGPU fix

  radeon:
   - Switch 1 element arrays to flexible arrays
   - Fix memory leak on shutdown
   - move to new logging

  i915:
   - Meteorlake display/OA/GSC fw/workarounds enabling
   - DP MST DSC support
   - Gamma/degamma readout support for the state checker
   - Enable SDP split support for DP 2.0
   - Add probe blocking support to i915.force_probe parameter
   - Enable Xe HP 4tile support
   - Avoid display direct calls to uncore
   - Fix HuC delayed load memory leaks
   - Add DG2 workarounds Wa_18018764978 and Wa_18019271663
   - Improve suspend / resume times with VT-d scanout workaround active
   - Fix DG2 visual corruption on small BAR systems by not forgetting to
     copy CCS aux state
   - Fix TLB invalidation for Gen12.50 video and compute engines
   - Enable HF-EEODB by switching HDMI, DP and LVDS to use struct
     drm_edid
   - Start using unversioned DMC firmware paths for new platforms
   - ELD refactor: Stop using hardware buffer, precompute ELD
   - lots of display code refactoring

  nouveau:
   - drop legacy ioctl support
   - replace 0-sized array

  msm:
   - dpu/dsi/mdss: Support for SM8350, SM8450 SM8550 and SC8280XP platform
   - Added bindings for SM8150
   - dpu: Partial support for DSC on SM8150 and SM8250
   - dpu: Fixed color transformation matrix being lost on suspend/resume
   - dp: Support SDM845 and SC8280XP platforms
   - dp: Support for limiting DP link rate via DT property
   - dsi: Validate display modes according to the DSI OPP table
   - dsi: DSI PHY support for the SM6375 platform
   - Add MSM_SUBMIT_BO_NO_IMPLICI
   - a2xx: Support to load legacy firmware
   - a6xx: GPU devcore dump updates for a650/a660
   - GPU devfreq tuning and fixes
   - Turn 8960 HDMI PHY into clock provider,
   - Make 8960 HDMI PHY use PXO clock from DT

  etnaviv:
   - experimental versilicon NPU support
   - report GPU load via fdinfo format
   - MMU fault message improvements

  tegra:
   - rework syncpoint interrupt

  mediatek:
   - DSI timing fix
   - fix config deps

  ast:
   - various fixes

  exynos:
   - restore bridge chain order fixes

  gud:
   - convert to shadow plane buffers
   - perform flushing synchronously during atomic update
   - Use new debugfs helpers

  arm/hdlcd:
   - Use new debugfs helper

  ili9486:
   - Support 16-bit pixel data

  imx:
   - Split off IPUv3 driver

  mipi-dbi:
   - convert to DRM shadow-plane helpers
   - rsp driver changes
   - Support separate I/O-voltage supply

  mxsfb:
   - Depend on ARCH_MXS or ARCH_MXC

  sun4i:
   - convert to new TV mode property

  vc4:
   - convert to new TV mode property
   - kunit tests
   - Support RGB565 and RGB666 formats
   - convert dsi driver to bridge
   - Various HVS an CRTC fixes

  v3d:
   - Do not opencode drm_gem_object_lookup()

  virtio:
   - improve tracing

  vkms:
   - support small cursors in IGT tests
   - Fix SEGFAULT from incorrect GEM-buffer mapping

  rcar-du:
   - fixes and improvements"

* tag 'drm-next-2023-02-23' of git://anongit.freedesktop.org/drm/drm: (1455 commits)
  msm/fbdev: fix unused variable warning with clang.
  drm/fb-helper: Remove drm_fb_helper_unprepare() from drm_fb_helper_fini()
  dma-buf: make kobj_type structure constant
  drm/shmem-helper: Fix locking for drm_gem_shmem_get_pages_sgt()
  drm/amd/display: disable SubVP + DRR to prevent underflow
  drm/amd/display: Fail atomic_check early on normalize_zpos error
  drm/amd/pm: avoid unaligned access warnings
  drm/amd/display: avoid unaligned access warnings
  drm/amd/display: Remove duplicate/repeating expressions
  drm/amd/display: Remove duplicate/repeating expression
  drm/amd/display: Make variables declaration inside ifdef guard
  drm/amd/display: Fix excess arguments on kernel-doc
  drm/amd/display: Add previously missing includes
  drm/amd/amdgpu: Add function prototypes to headers
  drm/amd/display: Add function prototypes to headers
  drm/amd/display: Turn global functions into static
  drm/amd/display: remove unused _calculate_degamma_curve function
  drm/amd/display: remove unused func declaration from resource headers
  drm/amd/display: unset initial value for tf since it's never used
  drm/amd/display: camel case cleanup in color_gamma file
  ...
2023-02-22 18:28:03 -08:00
Stephen Boyd
90039f3773 clk: qcom: apcs-msm8986: Include bitfield.h for FIELD_PREP
Otherwise some configurations fail.

Fixes: 0277263659 ("clk: qcom: add the driver for the MSM8996 APCS clocks")
Link: https://lore.kernel.org/r/20230223013847.1218900-1-sboyd@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2023-02-22 17:38:56 -08:00
Linus Torvalds
307e14c039 Merge tag '6.3-rc-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs client updates from Steve French:
 "The largest subset of this is from David Howells et al: making the
  cifs/smb3 driver pass iov_iters down to the lowest layers, directly to
  the network transport rather than passing lists of pages around,
  helping multiple areas:

   - Pin user pages, thereby fixing the race between concurrent DIO read
     and fork, where the pages containing the DIO read buffer may end up
     belonging to the child process and not the parent - with the result
     that the parent might not see the retrieved data.

   - cifs shouldn't take refs on pages extracted from non-user-backed
     iterators (eg. KVEC). With these changes, cifs will apply the
     appropriate cleanup.

   - Making it easier to transition to using folios in cifs rather than
     pages by dealing with them through BVEC and XARRAY iterators.

   - Allowing cifs to use the new splice function

  The remainder are:

   - fixes for stable, including various fixes for uninitialized memory,
     wrong length field causing mount issue to very old servers,
     important directory lease fixes and reconnect fixes

   - cleanups (unused code removal, change one element array usage, and
     a change form strtobool to kstrtobool, and Kconfig cleanups)

   - SMBDIRECT (RDMA) fixes including iov_iter integration and UAF fixes

   - reconnect fixes

   - multichannel fixes, including improving channel allocation (to
     least used channel)

   - remove the last use of lock_page_killable by moving to
     folio_lock_killable"

* tag '6.3-rc-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6: (46 commits)
  update internal module version number for cifs.ko
  cifs: update ip_addr for ses only for primary chan setup
  cifs: use tcon allocation functions even for dummy tcon
  cifs: use the least loaded channel for sending requests
  cifs: DIO to/from KVEC-type iterators should now work
  cifs: Remove unused code
  cifs: Build the RDMA SGE list directly from an iterator
  cifs: Change the I/O paths to use an iterator rather than a page list
  cifs: Add a function to read into an iter from a socket
  cifs: Add some helper functions
  cifs: Add a function to Hash the contents of an iterator
  cifs: Add a function to build an RDMA SGE list from an iterator
  netfs: Add a function to extract an iterator into a scatterlist
  netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator
  cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE
  splice: Export filemap/direct_splice_read()
  iov_iter: Add a function to extract a page list from an iterator
  iov_iter: Define flags to qualify page extraction.
  splice: Add a func to do a splice from an O_DIRECT file without ITER_PIPE
  splice: Add a func to do a splice from a buffered file without ITER_PIPE
  ...
2023-02-22 17:12:44 -08:00
Stephen Boyd
5270c7a244 Merge tag 'qcom-clk-for-6.3-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into clk-qcom
Pull Qualcomm clk driver updates from Bjorn Andersson:

Support for requesting the next power_off operation for a genpd to be
synchronous is introduced, and implemented in the GDSC driver. To allow
the GPU driver to request power_off to wait for the GDSC to actually
collapse.

Support for QDU1000/QRU1000 Global clock controller, SA8775P Global
clock controller, SM8550 TCSR and display clock controller, SM6350 clock
controller, nd MSM8996 CBF and APCS clock controllers is introduced.

Parent references are updated across a large number of clock drivers, to
align with the design changes since those drivers where introduced.
Similarly, test clocks has been dropped from a range of drivers.

A range of fixes for the MSM8996 CPU clock controller is introduced.

MSM8974 GCC is transitioned off the externally defined sleep_clk.

GDSC in the global clock controller for QCS404 is added, and various
parent definitions are cleaned up.

The SDCC core clocks on SM6115 are moved for floor_ops.

Programming of clk_dis_wait for GPU CX GDSC on SC7180 and SDM845 are
moved to use the recently introduced properties in the GDSC struct.

The RPMh clock driver gains SM8550 and SA8775P clocks, and the IPA clock
is added on a variety of platforms.

The SMD RPM driver receives a big cleanup, in particular a move away
from duplicating declaration of identical clocks between multiple
platforms.
A few missing clocks across msm8998, msm8992, msm8916, qcs404 are added
as well.

Using devm_pm_runtime_enable() to clean up some duplication is done
across SM8250 display and video clock controllers, SM8450 display clock
controller and SC7280 LPASS clock controller.

Devicetree binding changes for above mentioned additions and changes are
introduced.

Support for postponing clk_disable_unused() until sync_state was
introduced, but later reverted again, awaiting an agreement on the
solution.

Lastly, a change to pad a few registers in the SM8250 DTS to 8 digits
was picked up in the wrong tree and kept here, to avoid rebasing.

* tag 'qcom-clk-for-6.3-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (142 commits)
  clk: qcom: Revert sync_state based clk_disable_unused
  dt-bindings: clock: Merge qcom,gpucc-sm8350 into qcom,gpucc.yaml
  clk: qcom: gpucc-sdm845: fix clk_dis_wait being programmed for CX GDSC
  clk: qcom: gpucc-sc7180: fix clk_dis_wait being programmed for CX GDSC
  dt-bindings: clock: qcom,sa8775p-gcc: add the power-domains property
  clk: qcom: cpu-8996: add missing cputype include
  clk: qcom: gcc-sa8775p: remove unused variables
  clk: qcom: smd-rpm: provide RPM_SMD_XO_CLK_SRC on MSM8996 platform
  clk: qcom: add msm8996 Core Bus Framework (CBF) support
  dt-bindings: clock: qcom,msm8996-cbf: Describe the MSM8996 CBF clock controller
  clk: qcom: add the driver for the MSM8996 APCS clocks
  clk: qcom: gcc-qcs404: fix duplicate initializer warning
  clk: qcom: cpu-8996: change setup sequence to follow vendor kernel
  clk: qcom: cpu-8996: fix PLL clock ops
  clk: qcom: cpu-8996: fix ACD initialization
  clk: qcom: cpu-8996: fix PLL configuration sequence
  clk: qcom: cpu-8996: move qcom_cpu_clk_msm8996_acd_init call
  clk: qcom: cpu-8996: setup PLLs before registering clocks
  clk: qcom: cpu-8996: simplify the cpu_clk_notifier_cb
  clk: qcom: cpu-8996: skip ACD init if the setup is valid
  ...
2023-02-22 16:32:15 -08:00