Pull x86 asm updates from Ingo Molnar:
"Two changes:
- Remove (some) remnants of the vDSO's fake section table mechanism
that were left behind when the vDSO build process reverted to using
"objdump -S" to strip the userspace image.
- Remove hardcoded POPCNT mnemonics now that the minimum binutils
version supports the symbolic form"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Remove a stale/misleading comment from the linker script
x86/vdso: Remove obsolete "fake section table" reservation
x86: Use POPCNT mnemonics in arch_hweight.h
Pull x86 AMD northbridge updates from Ingo Molnar:
"Update DF/SMN access and k10temp for AMD F17h M30h, by Brian Woods:
'Updates the data fabric/system management network code needed to get
k10temp working for M30h. Since there are now processors which have
multiple roots per DF/SMN interface, there needs to some logic which
skips N-1 root complexes per DF/SMN interface. This is because the
root complexes per interface are redundant (as far as DF/SMN goes).
These changes shouldn't effect past processors and, for F17h M0Xh,
the mappings stay the same.'
The hwmon changes were seen and acked by hwmon maintainer Guenter Roeck"
* 'x86-amd-nb-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hwmon/k10temp: Add support for AMD family 17h, model 30h CPUs
x86/amd_nb: Add PCI device IDs for family 17h, model 30h
x86/amd_nb: Add support for newer PCI topologies
hwmon/k10temp, x86/amd_nb: Consolidate shared device IDs
iput() on sbi->node_inode can update sbi->stat_info
in the below context, if the f2fs_write_checkpoint()
has failed with error.
f2fs_balance_fs_bg+0x1ac/0x1ec
f2fs_write_node_pages+0x4c/0x260
do_writepages+0x80/0xbc
__writeback_single_inode+0xdc/0x4ac
writeback_single_inode+0x9c/0x144
write_inode_now+0xc4/0xec
iput+0x194/0x22c
f2fs_put_super+0x11c/0x1e8
generic_shutdown_super+0x70/0xf4
kill_block_super+0x2c/0x5c
kill_f2fs_super+0x44/0x50
deactivate_locked_super+0x60/0x8c
deactivate_super+0x68/0x74
cleanup_mnt+0x40/0x78
Fix this by moving f2fs_destroy_stats() further below iput() in
both f2fs_put_super() and f2fs_fill_super() paths.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
For all ordered cases in f2fs_wait_on_page_writeback(), we need to
check PageWriteback status, so let's clean up to relocate the check
into f2fs_wait_on_page_writeback().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Treat "block_count" from struct f2fs_super_block as 64-bit little endian
value in sanity_check_raw_super() because struct f2fs_super_block
declares "block_count" as "__le64".
This fixes a bug where the superblock validation fails on big endian
devices with the following error:
F2FS-fs (sda1): Wrong segment_count / block_count (61439 > 0)
F2FS-fs (sda1): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (sda1): Wrong segment_count / block_count (61439 > 0)
F2FS-fs (sda1): Can't find valid F2FS filesystem in 2th superblock
As result of this the partition cannot be mounted.
With this patch applied the superblock validation works fine and the
partition can be mounted again:
F2FS-fs (sda1): Mounted with checkpoint version = 7c84
My little endian x86-64 hardware was able to mount the partition without
this fix.
To confirm that mounting f2fs filesystems works on big endian machines
again I tested this on a 32-bit MIPS big endian (lantiq) device.
Fixes: 0cfe75c5b0 ("f2fs: enhance sanity_check_raw_super() to avoid potential overflows")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
If user change inode's i_flags via ioctl, let's add it into global
dirty list, so that checkpoint can guarantee its persistence before
fsync, it can make checkpoint keeping strong consistency.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
The union in struct extent_node wass only to indicate below fields
struct rb_node rb_node;
union {
struct {
unsigned int fofs;
unsigned int len;
...
...
can be parsed as fields in struct rb_entry, but they were never be
used explicitly before, so let's remove them for cleanup.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Should use lstart (logical start address) instead of start (in dev) here.
This fixes a bug in multi-device scenarios.
Signed-off-by: Qiuyang Sun <sunqiuyang@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
When there is a failure in f2fs_fill_super() after/during
the recovery of fsync'd nodes, it frees the current sbi and
retries again. This time the mount is successful, but the files
that got recovered before retry, still holds the extent tree,
whose extent nodes list is corrupted since sbi and sbi->extent_list
is freed up. The list_del corruption issue is observed when the
file system is getting unmounted and when those recoverd files extent
node is being freed up in the below context.
list_del corruption. prev->next should be fffffff1e1ef5480, but was (null)
<...>
kernel BUG at kernel/msm-4.14/lib/list_debug.c:53!
lr : __list_del_entry_valid+0x94/0xb4
pc : __list_del_entry_valid+0x94/0xb4
<...>
Call trace:
__list_del_entry_valid+0x94/0xb4
__release_extent_node+0xb0/0x114
__free_extent_tree+0x58/0x7c
f2fs_shrink_extent_tree+0xdc/0x3b0
f2fs_leave_shrinker+0x28/0x7c
f2fs_put_super+0xfc/0x1e0
generic_shutdown_super+0x70/0xf4
kill_block_super+0x2c/0x5c
kill_f2fs_super+0x44/0x50
deactivate_locked_super+0x60/0x8c
deactivate_super+0x68/0x74
cleanup_mnt+0x40/0x78
__cleanup_mnt+0x1c/0x28
task_work_run+0x48/0xd0
do_notify_resume+0x678/0xe98
work_pending+0x8/0x14
Fix this by not creating extents for those recovered files if shrinker is
not registered yet. Once mount is successful and shrinker is registered,
those files can have extents again.
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch cleans up checkpoint flow a bit:
- remove unneeded circulation of flushing meta pages.
- don't flush nat_bits pages in prior to other checkpoint pages.
- add bug_on to check remained meta pages after flushing.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Sometimes, I could observe # of issuing_discard to be 1 which blocks background
jobs due to is_idle()=false.
The only way to get out of it was to trigger gc_urgent. This patch avoids that
by checking any candidates as done in the list.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
One report says memalloc failure during mount.
(unwind_backtrace) from [<c010cd4c>] (show_stack+0x10/0x14)
(show_stack) from [<c049c6b8>] (dump_stack+0x8c/0xa0)
(dump_stack) from [<c024fcf0>] (warn_alloc+0xc4/0x160)
(warn_alloc) from [<c0250218>] (__alloc_pages_nodemask+0x3f4/0x10d0)
(__alloc_pages_nodemask) from [<c0270450>] (kmalloc_order_trace+0x2c/0x120)
(kmalloc_order_trace) from [<c03fa748>] (build_node_manager+0x35c/0x688)
(build_node_manager) from [<c03de494>] (f2fs_fill_super+0xf0c/0x16cc)
(f2fs_fill_super) from [<c02a5864>] (mount_bdev+0x15c/0x188)
(mount_bdev) from [<c03da624>] (f2fs_mount+0x18/0x20)
(f2fs_mount) from [<c02a68b8>] (mount_fs+0x158/0x19c)
(mount_fs) from [<c02c3c9c>] (vfs_kern_mount+0x78/0x134)
(vfs_kern_mount) from [<c02c76ac>] (do_mount+0x474/0xca4)
(do_mount) from [<c02c8264>] (SyS_mount+0x94/0xbc)
(SyS_mount) from [<c0108180>] (ret_fast_syscall+0x0/0x48)
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Commit 089842de ("f2fs: remove codes of unused wio_mutex") removes codes
of unused wio_mutex, but missing the comment, so delete it.
Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle were:
- Introduce "Energy Aware Scheduling" - by Quentin Perret.
This is a coherent topology description of CPUs in cooperation with
the PM subsystem, with the goal to schedule more energy-efficiently
on asymetric SMP platform - such as waking up tasks to the more
energy-efficient CPUs first, as long as the system isn't
oversubscribed.
For details of the design, see:
https://lore.kernel.org/lkml/20180724122521.22109-1-quentin.perret@arm.com/
- Misc cleanups and smaller enhancements"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
sched/fair: Select an energy-efficient CPU on task wake-up
sched/fair: Introduce an energy estimation helper function
sched/fair: Add over-utilization/tipping point indicator
sched/fair: Clean-up update_sg_lb_stats parameters
sched/toplogy: Introduce the 'sched_energy_present' static key
sched/topology: Make Energy Aware Scheduling depend on schedutil
sched/topology: Disable EAS on inappropriate platforms
sched/topology: Add lowest CPU asymmetry sched_domain level pointer
sched/topology: Reference the Energy Model of CPUs when available
PM: Introduce an Energy Model management framework
sched/cpufreq: Prepare schedutil for Energy Aware Scheduling
sched/topology: Relocate arch_scale_cpu_capacity() to the internal header
sched/core: Remove unnecessary unlikely() in push_*_task()
sched/topology: Remove the ::smt_gain field from 'struct sched_domain'
sched: Fix various typos in comments
sched/core: Clean up the #ifdef block in add_nr_running()
sched/fair: Make some variables static
sched/core: Create task_has_idle_policy() helper
sched/fair: Add lsub_positive() and use it consistently
sched/fair: Mask UTIL_AVG_UNCHANGED usages
...
Pull perf updates from Ingo Molnar:
"The main changes in this cycle on the kernel side:
- rework kprobes blacklist handling (Masami Hiramatsu)
- misc cleanups
on the tooling side these areas were the main focus:
- 'perf trace' enhancements (Arnaldo Carvalho de Melo)
- 'perf bench' enhancements (Davidlohr Bueso)
- 'perf record' enhancements (Alexey Budankov)
- 'perf annotate' enhancements (Jin Yao)
- 'perf top' enhancements (Jiri Olsa)
- Intel hw tracing enhancements (Adrian Hunter)
- ARM hw tracing enhancements (Leo Yan, Mathieu Poirier)
- ... plus lots of other enhancements, cleanups and fixes"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (171 commits)
tools uapi asm: Update asm-generic/unistd.h copy
perf symbols: Relax checks on perf-PID.map ownership
perf trace: Wire up the fadvise 'advice' table generator
perf beauty: Add generator for fadvise64's 'advice' arg constants
tools headers uapi: Grab a copy of fadvise.h
perf beauty mmap: Print mmap's 'offset' arg in hexadecimal
perf beauty mmap: Print PROT_READ before PROT_EXEC to match strace output
perf trace beauty: Beautify arch_prctl()'s arguments
perf trace: When showing string prefixes show prefix + ??? for unknown entries
perf trace: Move strarrays to beauty.h for further reuse
perf beauty: Wire up the x86_arch prctl code table generator
perf beauty: Add a string table generator for x86's 'arch_prctl' codes
tools include arch: Grab a copy of x86's prctl.h
perf trace: Show NULL when syscall pointer args are 0
perf trace: Enclose the errno strings with ()
perf augmented_raw_syscalls: Copy 'access' arg as well
perf trace: Add alignment spaces after the closing parens
perf trace beauty: Print O_RDONLY when (flags & O_ACCMODE) == 0
perf trace: Allow asking for not suppressing common string prefixes
perf trace: Add a prefix member to the strarray class
...
Pull locking updates from Ingo Molnar:
"The main change in this cycle are initial preparatory bits of dynamic
lockdep keys support from Bart Van Assche.
There are also misc changes, a comment cleanup and a data structure
cleanup"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Clean up comment in nohz_idle_balance()
locking/lockdep: Stop using RCU primitives to access 'all_lock_classes'
locking/lockdep: Make concurrent lockdep_reset_lock() calls safe
locking/lockdep: Remove a superfluous INIT_LIST_HEAD() statement
locking/lockdep: Introduce lock_class_cache_is_registered()
locking/lockdep: Inline __lockdep_init_map()
locking/lockdep: Declare local symbols static
tools/lib/lockdep/tests: Test the lockdep_reset_lock() implementation
tools/lib/lockdep: Add dummy print_irqtrace_events() implementation
tools/lib/lockdep: Rename "trywlock" into "trywrlock"
tools/lib/lockdep/tests: Run lockdep tests a second time under Valgrind
tools/lib/lockdep/tests: Improve testing accuracy
tools/lib/lockdep/tests: Fix shellcheck warnings
tools/lib/lockdep/tests: Display compiler warning and error messages
locking/lockdep: Remove ::version from lock_class structure
Pull EFI updates from Ingo Molnar:
"The main changes in this cycle were:
- Allocate the E820 buffer before doing the
GetMemoryMap/ExitBootServices dance so we don't run out of space
- Clear EFI boot services mappings when freeing the memory
- Harden efivars against callers that invoke it on non-EFI boots
- Reduce the number of memblock reservations resulting from extensive
use of the new efi_mem_reserve_persistent() API
- Other assorted fixes and cleanups"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/efi: Don't unmap EFI boot services code/data regions for EFI_OLD_MEMMAP and EFI_MIXED_MODE
efi: Reduce the amount of memblock reservations for persistent allocations
efi: Permit multiple entries in persistent memreserve data structure
efi/libstub: Disable some warnings for x86{,_64}
x86/efi: Move efi_<reserve/free>_boot_services() to arch/x86
x86/efi: Unmap EFI boot services code/data regions from efi_pgd
x86/mm/pageattr: Introduce helper function to unmap EFI boot services
efi/fdt: Simplify the get_fdt() flow
efi/fdt: Indentation fix
firmware/efi: Add NULL pointer checks in efivars API functions
Pull RCU updates from Ingo Molnar:
"The biggest RCU changes in this cycle were:
- Convert RCU's BUG_ON() and similar calls to WARN_ON() and similar.
- Replace calls of RCU-bh and RCU-sched update-side functions to
their vanilla RCU counterparts. This series is a step towards
complete removal of the RCU-bh and RCU-sched update-side functions.
( Note that some of these conversions are going upstream via their
respective maintainers. )
- Documentation updates, including a number of flavor-consolidation
updates from Joel Fernandes.
- Miscellaneous fixes.
- Automate generation of the initrd filesystem used for rcutorture
testing.
- Convert spin_is_locked() assertions to instead use lockdep.
( Note that some of these conversions are going upstream via their
respective maintainers. )
- SRCU updates, especially including a fix from Dennis Krein for a
bag-on-head-class bug.
- RCU torture-test updates"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (112 commits)
rcutorture: Don't do busted forward-progress testing
rcutorture: Use 100ms buckets for forward-progress callback histograms
rcutorture: Recover from OOM during forward-progress tests
rcutorture: Print forward-progress test age upon failure
rcutorture: Print time since GP end upon forward-progress failure
rcutorture: Print histogram of CB invocation at OOM time
rcutorture: Print GP age upon forward-progress failure
rcu: Print per-CPU callback counts for forward-progress failures
rcu: Account for nocb-CPU callback counts in RCU CPU stall warnings
rcutorture: Dump grace-period diagnostics upon forward-progress OOM
rcutorture: Prepare for asynchronous access to rcu_fwd_startat
torture: Remove unnecessary "ret" variables
rcutorture: Affinity forward-progress test to avoid housekeeping CPUs
rcutorture: Break up too-long rcu_torture_fwd_prog() function
rcutorture: Remove cbflood facility
torture: Bring any extra CPUs online during kernel startup
rcutorture: Add call_rcu() flooding forward-progress tests
rcutorture/formal: Replace synchronize_sched() with synchronize_rcu()
tools/kernel.h: Replace synchronize_sched() with synchronize_rcu()
net/decnet: Replace rcu_barrier_bh() with rcu_barrier()
...
Pull x86 RAS updates from Borislav Petkov:
"This time around we have a subsystem reorganization to offer, with the
new directory being
arch/x86/kernel/cpu/mce/
and all compilation units' names streamlined under it"
* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Restore MCE injector's module name
x86/mce: Unify pr_* prefix
x86/mce: Streamline MCE subsystem's naming
Pull x86 microcode loading updates from Borislav Petkov:
"This update contains work started by Maciej to make the microcode
container verification more robust against all kinds of corruption and
also unify verification paths between early and late loading.
The result is a set of verification routines which validate the
microcode blobs before loading it on the CPU. In addition, the code is
a lot more streamlined and unified.
In the process, some of the aspects of patch handling and loading were
simplified.
All provided by Maciej S. Szmigiero and Borislav Petkov"
* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode/AMD: Update copyright
x86/microcode/AMD: Check the equivalence table size when scanning it
x86/microcode/AMD: Convert CPU equivalence table variable into a struct
x86/microcode/AMD: Check microcode container data in the late loader
x86/microcode/AMD: Fix container size's type
x86/microcode/AMD: Convert early parser to the new verification routines
x86/microcode/AMD: Change verify_patch()'s return value
x86/microcode/AMD: Move chipset-specific check into verify_patch()
x86/microcode/AMD: Move patch family check to verify_patch()
x86/microcode/AMD: Simplify patch family detection
x86/microcode/AMD: Concentrate patch verification
x86/microcode/AMD: Cleanup verify_patch_size() more
x86/microcode/AMD: Clean up per-family patch size checks
x86/microcode/AMD: Move verify_patch_size() up in the file
x86/microcode/AMD: Add microcode container verification
x86/microcode/AMD: Subtract SECTION_HDR_SIZE from file leftover length
Pull x86 cache control updates from Borislav Petkov:
- The generalization of the RDT code to accommodate the addition of
AMD's very similar implementation of the cache monitoring feature.
This entails a subsystem move into a separate and generic
arch/x86/kernel/cpu/resctrl/ directory along with adding
vendor-specific initialization and feature detection helpers.
Ontop of that is the unification of user-visible strings, both in the
resctrl filesystem error handling and Kconfig.
Provided by Babu Moger and Sherry Hurwitz.
- Code simplifications and error handling improvements by Reinette
Chatre.
* 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/resctrl: Fix rdt_find_domain() return value and checks
x86/resctrl: Remove unnecessary check for cbm_validate()
x86/resctrl: Use rdt_last_cmd_puts() where possible
MAINTAINERS: Update resctrl filename patterns
Documentation: Rename and update intel_rdt_ui.txt to resctrl_ui.txt
x86/resctrl: Introduce AMD QOS feature
x86/resctrl: Fixup the user-visible strings
x86/resctrl: Add AMD's X86_FEATURE_MBA to the scattered CPUID features
x86/resctrl: Rename the config option INTEL_RDT to RESCTRL
x86/resctrl: Add vendor check for the MBA software controller
x86/resctrl: Bring cbm_validate() into the resource structure
x86/resctrl: Initialize the vendor-specific resource functions
x86/resctrl: Move all the macros to resctrl/internal.h
x86/resctrl: Re-arrange the RDT init code
x86/resctrl: Rename the RDT functions and definitions
x86/resctrl: Rename and move rdt files to a separate directory
Pull KVM updates from Paolo Bonzini:
"ARM:
- selftests improvements
- large PUD support for HugeTLB
- single-stepping fixes
- improved tracing
- various timer and vGIC fixes
x86:
- Processor Tracing virtualization
- STIBP support
- some correctness fixes
- refactorings and splitting of vmx.c
- use the Hyper-V range TLB flush hypercall
- reduce order of vcpu struct
- WBNOINVD support
- do not use -ftrace for __noclone functions
- nested guest support for PAUSE filtering on AMD
- more Hyper-V enlightenments (direct mode for synthetic timers)
PPC:
- nested VFIO
s390:
- bugfixes only this time"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (171 commits)
KVM: x86: Add CPUID support for new instruction WBNOINVD
kvm: selftests: ucall: fix exit mmio address guessing
Revert "compiler-gcc: disable -ftracer for __noclone functions"
KVM: VMX: Move VM-Enter + VM-Exit handling to non-inline sub-routines
KVM: VMX: Explicitly reference RCX as the vmx_vcpu pointer in asm blobs
KVM: x86: Use jmp to invoke kvm_spurious_fault() from .fixup
MAINTAINERS: Add arch/x86/kvm sub-directories to existing KVM/x86 entry
KVM/x86: Use SVM assembly instruction mnemonics instead of .byte streams
KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range()
KVM/MMU: Flush tlb directly in kvm_set_pte_rmapp()
KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte()
KVM: Make kvm_set_spte_hva() return int
KVM: Replace old tlb flush function with new one to flush a specified range.
KVM/MMU: Add tlb flush with range helper function
KVM/VMX: Add hv tlb range flush support
x86/hyper-v: Add HvFlushGuestAddressList hypercall support
KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops
KVM: x86: Disable Intel PT when VMXON in L1 guest
KVM: x86: Set intercept for Intel PT MSRs read/write
KVM: x86: Implement Intel PT MSRs read/write emulation
...
Pull xen updates from Juergen Gross:
"Xen features and fixes:
- a series to enable KVM guests to be booted by qemu via the Xen PVH
boot entry for speeding up KVM guest tests
- a series for a common driver to be used by Xen PV frontends (right
now drm and sound)
- two other fixes in Xen related code"
* tag 'for-linus-4.21-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
ALSA: xen-front: Use Xen common shared buffer implementation
drm/xen-front: Use Xen common shared buffer implementation
xen: Introduce shared buffer helpers for page directory...
xen/pciback: Check dev_data before using it
kprobes/x86/xen: blacklist non-attachable xen interrupt functions
KVM: x86: Allow Qemu/KVM to use PVH entry point
xen/pvh: Add memory map pointer to hvm_start_info struct
xen/pvh: Move Xen code for getting mem map via hcall out of common file
xen/pvh: Move Xen specific PVH VM initialization out of common file
xen/pvh: Create a new file for Xen specific PVH code
xen/pvh: Move PVH entry code out of Xen specific tree
xen/pvh: Split CONFIG_XEN_PVH into CONFIG_PVH and CONFIG_XEN_PVH
Pull parisc updates from Helge Deller:
"The major change in this patchset is the new system call table
generation support from Firoz Khan"
* 'parisc-4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: syscalls: ignore nfsservctl for other architectures
parisc: generate uapi header and system call table files
parisc: add system call table generation support
parisc: remove __NR_Linux from uapi header file.
parisc: add __NR_syscalls along with __NR_Linux_syscalls
parisc: move __IGNORE* entries to non uapi header
parisc: Fix HP SDC hpa address output
parisc: Fix serio address output
parisc: Split out alternative live patching code
Pull MIPS updates from Paul Burton:
"Here's the main MIPS pull for Linux 4.21. Core architecture changes
include:
- Syscall tables & definitions for unistd.h are now generated by
scripts, providing greater consistency with other architectures &
making it easier to add new syscalls.
- Support for building kernels with no floating point support, upon
which any userland attempting to use floating point instructions
will receive a SIGILL. Mostly useful to shrink the kernel & as
preparation for nanoMIPS support which does not yet include FP.
- MIPS SIMD Architecture (MSA) vector register context is now exposed
by ptrace via a new NT_MIPS_MSA regset.
- ASIDs are now stored as 64b values even for MIPS32 kernels,
expanding the ASID version field sufficiently that we don't need to
worry about overflow & avoiding rare issues with reused ASIDs that
have been observed in the wild.
- The branch delay slot "emulation" page is now mapped without write
permission for the user, preventing its use as a nice location for
attacks to execute malicious code from.
- Support for ioremap_prot(), primarily to allow gdb or other ptrace
users the ability to view their tracee's memory using the same
cache coherency attribute.
- Optimizations to more cpu_has_* macros, allowing more to be
compile-time constant where possible.
- Enable building the whole kernel with UBSAN instrumentation.
- Enable building the kernel with link-time dead code & data
elimination.
Platform specific changes include:
- The Boston board gains a workaround for DMA prefetching issues with
the EG20T Platform Controller Hub that it uses.
- Cleanups to Cavium Octeon code removing about 20k lines of
redundant code, mostly unused or duplicate register definitions in
headers.
- defconfig updates for the DECstation machines, including new
defconfigs for r4k & 64b machines.
- Further work on Loongson 3 support.
- DMA fixes for SiByte machines"
* tag 'mips_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (95 commits)
MIPS: math-emu: Write-protect delay slot emulation pages
MIPS: Remove struct mm_context_t fp_mode_switching field
mips: generate uapi header and system call table files
mips: add system call table generation support
mips: remove syscall table entries
mips: add +1 to __NR_syscalls in uapi header
mips: rename scall64-64.S to scall64-n64.S
mips: remove unused macros
mips: add __NR_syscalls along with __NR_Linux_syscalls
MIPS: Expand MIPS32 ASIDs to 64 bits
MIPS: OCTEON: delete redundant register definitions
MIPS: OCTEON: cvmx_gmxx_inf_mode: use oldest forward compatible definition
MIPS: OCTEON: cvmx_mio_fus_dat3: use oldest forward compatible definition
MIPS: OCTEON: cvmx_pko_mem_debug8: use oldest forward compatible definition
MIPS: OCTEON: octeon-usb: use common gpio_bit definition
MIPS: OCTEON: enable all OCTEON drivers in defconfig
mips: annotate implicit fall throughs
MIPS: Hardcode cpu_has_mips* where target ISA allows
MIPS: MT: Remove norps command line parameter
MIPS: Only include mmzone.h when CONFIG_NEED_MULTIPLE_NODES=y
...
Pull sparc updates from David Miller:
- Automatic system call table generation, from Firoz Khan.
- Clean up accesses to the OF device names by using full_name instead
of path_component_name.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next:
ALSA: sparc: Use of_node_name_eq for node name comparisons
sbus: Use of_node_name_eq for node name comparisons
sparc: generate uapi header and system call table files
sparc: add system call table generation support
sparc: add __NR_syscalls along with NR_syscalls
sparc: move __IGNORE* entries to non uapi header
sparc: Use DT node full_name instead of name for resources
sparc: Remove unused leon_trans_init
sparc: Use device_type helpers to access the node type
sparc: Use of_node_name_eq for node name comparisons
sparc: Convert to using %pOFn instead of device_node.name
sparc: prom: use property "name" directly to construct node names
of: Drop full path from full_name for PDT systems
sparc: Convert to using %pOF instead of full_name
fs/openpromfs: Use of_node_name_eq for node name comparisons
fs/openpromfs: use full_name instead of path_component_name
Pull RISC-V updates from Palmer Dabbelt:
"We don't have many patches for this merge window, probably because
everything has been a bit busy with the holidays and conferences. The
only big user-visible change is to move over to an SBI-based earlycon
instead of our arch-specific early printk support.
The only outstanding patch set I know of is the audit patch set, which
I've managed to make a mess of and will attempt to clean up"
* tag 'riscv-for-linus-4.21-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
RISC-V: Select GENERIC_SCHED_CLOCK for clocksource drivers
RISC-V: lib: minor asm cleanup
RISC-V: Update Kconfig to better handle CMDLINE
riscv: remove unused variable in ftrace
RISC-V: add of_node_put()
RISC-V: Fix of_node_* refcount
riscv, atomic: Add #define's for the atomic_{cmp,}xchg_*() variants
RISC-V: Remove EARLY_PRINTK support
RISC-V: defconfig: Enable RISC-V SBI earlycon support
Pull arch/microblaze updates from Michal Simek:
- Fix multiple Kbuild/Makefile issues
- Start to use system call table generation
* tag 'microblaze-v5.0-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: remove the explicit removal of system.dtb
microblaze: fix race condition in building boot images
microblaze: add linux.bin* and simpleImage.* to PHONY
microblaze: fix multiple bugs in arch/microblaze/boot/Makefile
microblaze: move "... is ready" messages to arch/microblaze/Makefile
microblaze: adjust the help to the real behavior
microblaze: generate uapi header and system call table files
microblaze: add system call table generation support
microblaze: move __NR_syscalls macro from asm/unistd.h
microblaze: Typo s/use use/use/
Pull arch/sh syscall table scripting from Arnd Bergmann:
"I worked with Firoz Khan to change all architectures to have their
system call tables (syscall.S and asm/unistd.h) generated by a script
from a more readable input file the same way that we already had on
x86, s390 and arm.
I offered to take those conversions through the asm-generic tree that
did not get picked up by the architecture maintainers, and fortunately
all but one have now been accepted into arch maintainer trees, so this
branch only contains the conversion for arch/sh/, with permission from
Rich.
The conversion does not include the old 64-bit sh5 architecture, which
has never shipped and not even compiled in a long time. The table in
include/uapi/asm/unistd.h is also not included here, as Firoz is still
working on that one, it will have to wait for the next following merge
window, hopefully together with the addition of the 64-bit time_t
system calls for the y2038 work that led to the system call table
rework"
* tag 'asm-generic-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
sh: generate uapi header and syscall table header files
sh: add system call table generation support
sh: add __NR_syscalls along with NR_syscalls
Pull ia64 updates from Tony Luck:
"Change ia64 to make it easier to update system call tables (in line
with some other architectures).
This is in preparation for y2038 changes which are forecasted to add
several new system calls"
* tag 'please-pull-y2038prep' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
ia64: generate uapi header and system call table files
ia64: add system call table generation support
ia64: add an offset for system call number
ia64: add __NR_syscalls along with NR_syscalls
ia64: add __NR_old_getpagesize in uapi header file
Pull m68k updates from Geert Uytterhoeven:
- Generate syscall headers
- Small improvements and cleanups
- defconfig updates
* tag 'm68k-for-v4.21-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Generate uapi header and syscall table header files
m68k: Add system call table generation support
m68k: Add __NR_syscalls along with NR_syscalls
m68k/defconfig: Update defconfigs for v4.20-rc1
m68k: Remove redundant 'default n' from Kconfig
m68k: Unroll raw_outsb() loop
mds contains an optimization, it does not re-issue stale caps if
client does not want any cap.
A special case of the optimization is that client wants some caps,
but skipped updating 'wanted'. For this case, client needs to update
'wanted' when stale session get renewed.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
When reading cached inode that already has Fscr caps, this can avoid
two cap messages (one updats 'wanted' caps, one clears 'wanted' caps).
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Updating mseq makes client think importer mds has accepted all prior
cap messages and importer mds knows what caps client wants. Actually
some cap messages may have been dropped because of mseq mismatch.
If mseq is left untouched, importing cap's mds_wanted later will get
reset by cap import message.
Cc: stable@vger.kernel.org
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Prevent do_tcp_sendpages() from calling tcp_push() (at least) once per
page. Instead, arrange for tcp_push() to be called (at least) once per
data payload. This results in more MSS-sized packets and fewer packets
overall (5-10% reduction in my tests with typical OSD request sizes).
See commits 2f53384424 ("tcp: allow splice() to build full TSO
packets"), 35f9c09fe9 ("tcp: tcp_sendpages() should call tcp_push()
once") and ae62ca7b03 ("tcp: fix MSG_SENDPAGE_NOTLAST logic") for
details.
Here is an example of a packet size histogram for 128K OSD requests
(MSS = 1448, top 5):
Before:
SIZE COUNT
1448 777700
952 127915
1200 39238
1219 9806
21 5675
After:
SIZE COUNT
1448 897280
21 6201
1019 2797
643 2739
376 2479
We could do slightly better by explicitly corking the socket but it's
not clear it's worth it.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
sock_no_sendpage() makes the code cleaner.
Also, don't set MSG_EOR. sendpage doesn't act on MSG_EOR on its own,
it just honors the setting from the preceding sendmsg call by looking
at ->eor in tcp_skb_can_collapse_to().
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
last_piece is for the last piece in the current data item, not in the
entire data payload of the message. This is harmful for messages with
multiple data items. On top of that, we don't need to signal the end
of a data payload either because it is always followed by a footer.
We used to signal "more" unconditionally, until commit fe38a2b67b
("libceph: start defining message data cursor"). Part of a large
series, it introduced cursor->last_piece and also mistakenly inverted
the hint by passing last_piece for "more". This was corrected with
commit c2cfa19400 ("libceph: Fix ceph_tcp_sendpage()'s more boolean
usage").
As it is, last_piece is not helping at all: because Nagle algorithm is
disabled, for a simple message with two 512-byte data items we end up
emitting three packets: front + first data item, second data item and
footer. Go back to the original pre-fe38a2b67bc6 behavior -- a single
packet in most cases.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
There is redundant assighment of variable i in
ceph_mdsmap_get_random_mds(), just remvoe it.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
splice_dentry() may drop the original dentry and return other
dentry. It relies on its caller to update pointer that points
to the dropped dentry. This is error-prone.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
The to_software_mode() macro can potentially return NULL, so also add
a NULL check on swnode before dereferencing it to avoid any NULL
pointer dereferences.
Detected by CoverityScan, CID#1476052 ("Explicit null dereferenced")
Fixes: 59abd83672 (drivers: base: Introducing software nodes to the firmware node framework)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The pointer p can be potentially NULL as macro to_software_node can
return NULL.
Add null check on p before dereferencing it to avoid any NULL pointer
dereferences.
Detected by CoverityScan, CID#1476039 ("Explicit null dereferenced")
Fixes: 59abd83672 (drivers: base: Introducing software nodes to the firmware node framework)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Pull arm64 festive updates from Will Deacon:
"In the end, we ended up with quite a lot more than I expected:
- Support for ARMv8.3 Pointer Authentication in userspace (CRIU and
kernel-side support to come later)
- Support for per-thread stack canaries, pending an update to GCC
that is currently undergoing review
- Support for kexec_file_load(), which permits secure boot of a kexec
payload but also happens to improve the performance of kexec
dramatically because we can avoid the sucky purgatory code from
userspace. Kdump will come later (requires updates to libfdt).
- Optimisation of our dynamic CPU feature framework, so that all
detected features are enabled via a single stop_machine()
invocation
- KPTI whitelisting of Cortex-A CPUs unaffected by Meltdown, so that
they can benefit from global TLB entries when KASLR is not in use
- 52-bit virtual addressing for userspace (kernel remains 48-bit)
- Patch in LSE atomics for per-cpu atomic operations
- Custom preempt.h implementation to avoid unconditional calls to
preempt_schedule() from preempt_enable()
- Support for the new 'SB' Speculation Barrier instruction
- Vectorised implementation of XOR checksumming and CRC32
optimisations
- Workaround for Cortex-A76 erratum #1165522
- Improved compatibility with Clang/LLD
- Support for TX2 system PMUS for profiling the L3 cache and DMC
- Reflect read-only permissions in the linear map by default
- Ensure MMIO reads are ordered with subsequent calls to Xdelay()
- Initial support for memory hotplug
- Tweak the threshold when we invalidate the TLB by-ASID, so that
mremap() performance is improved for ranges spanning multiple PMDs.
- Minor refactoring and cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (125 commits)
arm64: kaslr: print PHYS_OFFSET in dump_kernel_offset()
arm64: sysreg: Use _BITUL() when defining register bits
arm64: cpufeature: Rework ptr auth hwcaps using multi_entry_cap_matches
arm64: cpufeature: Reduce number of pointer auth CPU caps from 6 to 4
arm64: docs: document pointer authentication
arm64: ptr auth: Move per-thread keys from thread_info to thread_struct
arm64: enable pointer authentication
arm64: add prctl control for resetting ptrauth keys
arm64: perf: strip PAC when unwinding userspace
arm64: expose user PAC bit positions via ptrace
arm64: add basic pointer authentication support
arm64/cpufeature: detect pointer authentication
arm64: Don't trap host pointer auth use to EL2
arm64/kvm: hide ptrauth from guests
arm64/kvm: consistently handle host HCR_EL2 flags
arm64: add pointer authentication register bits
arm64: add comments about EC exception levels
arm64: perf: Treat EXCLUDE_EL* bit definitions as unsigned
arm64: kpti: Whitelist Cortex-A CPUs that don't implement the CSV3 field
arm64: enable per-task stack canaries
...
Pull x86 pti updates from Thomas Gleixner:
"No point in speculating what's in this parcel:
- Drop the swap storage limit when L1TF is disabled so the full space
is available
- Add support for the new AMD STIBP always on mitigation mode
- Fix a bunch of STIPB typos"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation: Add support for STIBP always-on preferred mode
x86/speculation/l1tf: Drop the swap storage limit restriction when l1tf=off
x86/speculation: Change misspelled STIPB to STIBP
Pull timer updates from Thomas Gleixner:
"The timer department delivers the following christmas presents:
Core code:
- Use proper seqcount initializer to make lockdep happy
- SPDX annotations and cleanup of license boilerplates
- Use DEFINE_SHOW_ATTRIBUTE() instead of open coding it
- Minor cleanups
Driver code:
- Add the sched_clock for the arc timer (Alexey Brodkin)
- Change the file timer names for riscv, rockchip, tegra20, sun4i and
meson6 (Daniel Lezcano)
- Add the DT bindings for r8a7796, r8a77470 and r8a774a1 (Biju Das)
- Remove the early platform driver registration for timer-ti-dm
(Bartosz Golaszewski)
- Provide the sched_clock for the riscv timer (Anup Patel)
- Add support for ARM64 for the imx-gpt and convert the imx-tpm to
the timer-of API (Anson Huang)
- Remove useless irq protection for the imx-gpt (Clément Péron)
- Remove a duplicate function name for the vt8500 (Dan Carpenter)
- Remove obsolete inclusion of <asm/smp_twd.h> for the tegra20 (Geert
Uytterhoeven)
- Demote the prcmu and the custom sched_clock for the dbx500 and the
ux500 (Linus Walleij)
- Add a new timer clock for the RDA8810PL (Manivannan Sadhasivam)
- Rename the macro to stick to the register name and add the delay
timer (Martin Blumenstingl)
- Switch the bcm2835 to the SPDX identifier (Stefan Wahren)
- Fix the interrupt register access on the fttmr010 (Tao Ren)
- Add missing of_node_put in the initialization path on the
integrator-ap (Yangtao Li)"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
dt-bindings: timer: Document RDA8810PL SoC timer
clocksource/drivers/rda: Add clock driver for RDA8810PL SoC
clocksource/drivers/meson6: Change name meson6_timer timer-meson6
clocksource/drivers/sun4i: Change name sun4i_timer to timer-sun4i
clocksource/drivers/tegra20: Change name tegra20_timer to timer-tegra20
clocksource/drivers/rockchip: Change name rockchip_timer to timer-rockchip
clocksource/drivers/riscv: Change name riscv_timer to timer-riscv
clocksource/drivers/riscv_timer: Provide the sched_clock
clocksource/drivers/timer-imx-tpm: Specify clock name for timer-of
clocksource/drivers/fttmr010: Fix invalid interrupt register access
clocksource/drivers/integrator-ap: Add missing of_node_put()
clocksource/drivers/bcm2835: Switch to SPDX identifier
dt-bindings: timer: renesas, cmt: Document r8a774a1 CMT support
clocksource/drivers/timer-imx-tpm: Convert the driver to timer-of
clocksource/drivers/arc_timer: Utilize generic sched_clock
dt-bindings: timer: renesas, cmt: Document r8a77470 CMT support
dt-bindings: timer: renesas, cmt: Document r8a7796 CMT support
clocksource/drivers/imx-gpt: Remove unnecessary irq protection
clocksource/drivers/imx-gpt: Add support for ARM64
clocksource/drivers/meson6_timer: Implement the ARM delay timer
...
Pull irq updates from Thomas Gleixner:
"The interrupt department provides:
Core updates:
- Better spreading to NUMA nodes in the affinity management
- Support for more than one set of interrupts to spread out to allow
separate queues for separate functionality of a single device.
- Decouple the non queue interrupts from being managed. Those are
usually general interrupts for error handling etc. and those should
never be shut down. This also a preparation to utilize the
spreading mechanism for initial spreading of non-managed interrupts
later.
- Make the single CPU target selection in the matrix allocator more
balanced so interrupts won't accumulate on single CPUs in certain
situations.
- A large spell checking patch so we don't end up fixing single typos
over and over.
Driver updates:
- A bunch of new irqchip drivers (RDA8810PL, Madera, imx-irqsteer)
- Updates for the 8MQ, F1C100s platform drivers
- A number of SPDX cleanups
- A workaround for a very broken GICv3 implementation on msm8996
which sports a botched register set.
- A platform-msi fix to prevent memory leakage
- Various cleanups"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (37 commits)
genirq/affinity: Add is_managed to struct irq_affinity_desc
genirq/core: Introduce struct irq_affinity_desc
genirq/affinity: Remove excess indentation
irqchip/stm32: protect configuration registers with hwspinlock
dt-bindings: interrupt-controller: stm32: Document hwlock properties
irqchip: Add driver for imx-irqsteer controller
dt-bindings/irq: Add binding for Freescale IRQSTEER multiplexer
irqchip: Add driver for Cirrus Logic Madera codecs
genirq: Fix various typos in comments
irqchip/irq-imx-gpcv2: Add IRQCHIP_DECLARE for i.MX8MQ compatible
irqchip/irq-rda-intc: Fix return value check in rda8810_intc_init()
irqchip/irq-imx-gpcv2: Silence "fall through" warning
irqchip/gic-v3: Add quirk for msm8996 broken registers
irqchip/gic: Add support to device tree based quirks
dt-bindings/gic-v3: Add msm8996 compatible string
irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s
irqchip/sun4i: Move IC specific register offsets to struct
irqchip/sun4i: Add a struct to hold global variables
dt-bindings: interrupt-controller: Add suniv interrupt-controller
irqchip: Add RDA8810PL interrupt driver
...
