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573dda18a809cce3ae4dc94de614cc6fe74ce176
linux/arch/arm64/include/asm
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Andre Przywara 27ea98a4c5 KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock 
commit bf308242ab upstream.

kvm_read_guest() will eventually look up in kvm_memslots(), which requires
either to hold the kvm->slots_lock or to be inside a kvm->srcu critical
section.
In contrast to x86 and s390 we don't take the SRCU lock on every guest
exit, so we have to do it individually for each kvm_read_guest() call.

Provide a wrapper which does that and use that everywhere.

Note that ending the SRCU critical section before returning from the
kvm_read_guest() wrapper is safe, because the data has been *copied*, so
we don't need to rely on valid references to the memslot anymore.

Cc: Stable <stable@vger.kernel.org> # 4.8+
Reported-by: Jan Glauber <jan.glauber@caviumnetworks.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-22 18:53:57 +02:00
..
xen
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
acenv.h
ARM64 / ACPI: Get RSDP and ACPI boot-time tables
2015-03-25 11:49:30 +00:00
acpi.h
ARM64/ACPI: Fix BAD_MADT_GICC_ENTRY() macro implementation
2017-06-02 15:13:52 +01:00
alternative.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
arch_gicv3.h
irqchip/gic-v3-its: Add VPE interrupt masking
2017-08-31 15:31:38 +01:00
arch_timer.h
clocksource/drivers/arm_arch_timer: Avoid infinite recursion when ftrace is enabled
2017-08-11 16:01:43 +02:00
arm-cci.h
arm-cci: Get rid of secure transactions for PMU driver
2015-03-27 13:44:35 +00:00
asm-bug.h
arm64: Add ASM_BUG()
2017-08-08 16:28:13 +01:00
asm-offsets.h
arm64: Assembly macros and definitions
2012-09-17 10:24:44 +01:00
asm-uaccess.h
arm64: kpti: Fix the interaction between ASID switching and software PAN
2018-02-16 20:22:49 +01:00
assembler.h
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
2018-05-16 10:10:25 +02:00
atomic_ll_sc.h
arm64: Remove redundant mov from LL/SC cmpxchg
2017-05-15 18:30:10 +01:00
atomic_lse.h
arm64: atomics: Remove '&' from '+&' asm constraint in lse atomics
2017-07-20 10:20:54 +01:00
atomic.h
locking/atomic: Remove linux/atomic.h:atomic_fetch_or()
2016-06-16 10:48:32 +02:00
barrier.h
arm64: Implement array_index_mask_nospec()
2018-02-16 20:22:51 +01:00
bitops.h
arch,arm64: Convert smp_mb__*()
2014-04-18 11:40:33 +02:00
bitrev.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
boot.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
brk-imm.h
arm64: move brk immediate argument definitions to separate header
2016-02-23 17:43:25 +00:00
bug.h
arm64: Add ASM_BUG()
2017-08-08 16:28:13 +01:00
cache.h
arm64: cache: Identify VPIPT I-caches
2017-03-20 16:17:02 +00:00
cacheflush.h
arm64: Implement pmem API support
2017-08-09 12:15:45 +01:00
checksum.h
arm64: add missing conversion to __wsum in ip_fast_csum()
2017-06-29 16:32:43 +01:00
clocksource.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cmpxchg.h
arm64: xchg: hazard against entire exchange variable
2017-05-09 17:44:50 +01:00
compat.h
fcntl: don't cap l_start and l_end values for F_GETLK64 in compat syscall
2017-12-17 15:07:59 +01:00
compiler.h
arm64: Miscellaneous header files
2012-09-17 13:42:21 +01:00
cpu_ops.h
ARM64: kernel: unify ACPI and DT cpus initialization
2015-05-19 16:09:29 +01:00
cpu.h
arm64: cpuinfo: Expose MIDR_EL1 and REVIDR_EL1 to sysfs
2016-07-12 16:09:37 +01:00
cpucaps.h
arm64: Implement branch predictor hardening for Falkor
2018-02-16 20:22:54 +01:00
cpufeature.h
arm64/cpufeature: don't use mutex in bringup path
2017-05-17 17:00:29 +01:00
cpuidle.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cputype.h
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
2018-05-16 10:10:25 +02:00
current.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dcc.h
arm64: dcc: simplify accessors
2016-09-09 11:41:13 +01:00
debug-monitors.h
arm64: Add uprobe support
2016-11-07 18:15:21 +00:00
device.h
xen/arm,arm64: fix xen_dma_ops after 815dd18 "Consolidate get_dma_ops..."
2017-05-02 11:14:42 +02:00
dma-mapping.h
Merge tag 'dma-mapping-4.13' of git://git.infradead.org/users/hch/dma-mapping
2017-07-06 19:20:54 -07:00
dmi.h
arm64: dmi: Add SMBIOS/DMI support
2014-11-05 09:03:25 +01:00
efi.h
arm64: kpti: Fix the interaction between ASID switching and software PAN
2018-02-16 20:22:49 +01:00
elf.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2017-09-05 09:53:37 -07:00
esr.h
arm64: Handle trapped DC CVAP
2017-08-09 11:00:43 +01:00
exception.h
arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections
2016-03-25 16:37:42 -07:00
exec.h
arm64: suspend: Reconfigure PSTATE after resume from idle
2016-10-20 09:50:54 +01:00
extable.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fb.h
arm64: Device specific operations
2012-09-17 13:42:04 +01:00
fixmap.h
arm64: kaslr: Put kernel vectors address in separate data page
2018-02-16 20:22:48 +01:00
fpsimd.h
arm64: neon: Remove support for nested or hardirq kernel-mode NEON
2017-08-04 15:00:57 +01:00
fpsimdmacros.h
arm64: neon: Remove support for nested or hardirq kernel-mode NEON
2017-08-04 15:00:57 +01:00
ftrace.h
arm64: Fix misspellings in comments.
2016-03-04 18:19:17 +00:00
futex.h
arm64: futex: Mask __user pointers prior to dereference
2018-02-16 20:22:52 +01:00
hardirq.h
arm64: kdump: implement machine_crash_shutdown()
2017-04-05 18:29:15 +01:00
hugetlb.h
arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages
2017-08-22 17:47:11 +01:00
hw_breakpoint.h
arm64: cpufeature: Make ID reg accessor naming less counterintuitive
2017-04-04 16:55:41 +01:00
hwcap.h
arm64/HWCAP: Use system wide safe values
2015-10-21 15:35:58 +01:00
hypervisor.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
insn.h
arm64: Prevent cpu hotplug rwsem recursion
2017-05-26 10:10:45 +02:00
io.h
ARM64: Implement pci_remap_cfgspace() interface
2017-04-24 13:53:13 -05:00
irq_work.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irqflags.h
arm64: debug: remove unused local_dbg_{enable, disable} macros
2016-07-19 16:59:40 +01:00
jump_label.h
locking/static_keys: Add a new static_key interface
2015-08-03 11:34:15 +02:00
kasan.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Kbuild
arm64: neon: replace generic definition of may_use_simd()
2017-08-04 15:00:47 +01:00
kernel-pgtable.h
arm64: kpti: Make use of nG dependent on arm64_kernel_unmapped_at_el0()
2018-02-16 20:22:50 +01:00
kexec.h
arm64: kdump: implement machine_crash_shutdown()
2017-04-05 18:29:15 +01:00
kgdb.h
arm64: kgdb: Match pstate size with gdbserver protocol
2016-06-16 19:20:51 +01:00
kprobes.h
kprobes: move kprobe declarations to asm-generic/kprobes.h
2017-02-27 18:43:45 -08:00
kvm_arm.h
arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one
2017-12-14 09:53:00 +01:00
kvm_asm.h
arm64: Implement branch predictor hardening for Falkor
2018-02-16 20:22:54 +01:00
kvm_coproc.h
arm64: KVM: common infrastructure for handling AArch32 CP14/CP15
2014-07-11 04:57:44 -07:00
kvm_emulate.h
KVM: arm/arm64: Fix guest external abort matching
2017-09-05 17:33:37 +02:00
kvm_host.h
arm/arm64: KVM: Add PSCI version selection API
2018-05-01 12:58:27 -07:00
kvm_hyp.h
KVM: arm64: vgic-v3: Add hook to handle guest GICv3 sysreg accesses at EL2
2017-06-15 09:44:59 +01:00
kvm_mmio.h
KVM: arm/arm64: Export mmio_read/write_bus
2016-05-20 15:39:42 +02:00
kvm_mmu.h
KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock
2018-05-22 18:53:57 +02:00
linkage.h
arm64: relax assembly code alignment from 16 byte to 4 byte
2017-09-18 11:20:19 +01:00
lse.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
memblock.h
arm64: MMU initialisation
2012-09-17 13:41:56 +01:00
memory.h
arm64: move TASK_* definitions to <asm/processor.h>
2018-02-16 20:22:46 +01:00
mmu_context.h
arm64: kpti: Fix the interaction between ASID switching and software PAN
2018-02-16 20:22:49 +01:00
mmu.h
arm64: Add skeleton to harden the branch predictor against aliasing attacks
2018-02-16 20:22:53 +01:00
mmzone.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.h
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-05 11:26:31 +01:00
neon.h
arm64: neon: Temporarily add a kernel_mode_begin_partial() definition
2017-08-04 15:10:12 +01:00
numa.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page-def.h
arm64: factor out PAGE_* and CONT_* definitions
2017-08-15 18:35:00 +01:00
page.h
arm64: factor out PAGE_* and CONT_* definitions
2017-08-15 18:35:00 +01:00
paravirt.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
percpu.h
arm64: factor out current_stack_pointer
2016-11-11 18:25:43 +00:00
perf_event.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2016-12-13 16:39:21 -08:00
pgalloc.h
kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK
2018-02-22 15:42:23 +01:00
pgtable-hwdef.h
arm64: mm: Move ASID from TTBR0 to TTBR1
2018-02-16 20:22:46 +01:00
pgtable-prot.h
arm64: kpti: Make use of nG dependent on arm64_kernel_unmapped_at_el0()
2018-02-16 20:22:50 +01:00
pgtable-types.h
arch, mm: convert all architectures to use 5level-fixup.h
2017-03-09 11:48:47 -08:00
pgtable.h
arm64: mm: Map entry trampoline into trampoline and kernel page tables
2018-02-16 20:22:47 +01:00
probes.h
arm64: Remove reference to asm/opcodes.h
2016-12-05 10:42:34 +00:00
proc-fns.h
arm64: mm: Move ASID from TTBR0 to TTBR1
2018-02-16 20:22:46 +01:00
processor.h
arm64: Make USER_DS an inclusive limit
2018-02-16 20:22:51 +01:00
ptdump.h
arm64: dump: Add checking for writable and exectuable pages
2016-11-07 18:15:04 +00:00
ptrace.h
Merge branch 'arm64/exception-stack' of git://git.kernel.org/pub/scm/linux/kernel/git/mark/linux into for-next/core
2017-08-09 15:37:49 +01:00
seccomp.h
arm64: add seccomp support
2014-11-28 10:24:59 +00:00
sections.h
arm64: mmu: apply strict permissions to .init.text and .init.data
2017-03-23 13:54:50 +00:00
shmparam.h
arm64: fix COMPAT_SHMLBA definition for large pages
2015-12-02 14:00:10 +00:00
signal32.h
arm64: compat: Remove leftover variable declaration
2017-08-10 18:17:32 +01:00
simd.h
arm64: neon: Forbid when irqs are disabled
2017-08-09 15:05:59 +01:00
smp_plat.h
arm64: remove dead-code depending on CONFIG_UP_LATE_INIT
2015-07-29 18:32:09 +01:00
smp.h
arm64: kexec: have own crash_smp_send_stop() for crash dump for nonpanic cores
2017-08-21 18:01:04 +01:00
sparsemem.h
arm64: mm: update max pa bits to 48
2014-08-19 20:23:02 +01:00
spinlock_types.h
arm64: include linux/types.h in asm/spinlock_types.h
2015-07-27 11:09:34 +01:00
spinlock.h
arm64: spinlock: Fix theoretical trylock() A-B-A with LSE atomics
2018-04-26 11:02:17 +02:00
stack_pointer.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stackprotector.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
stacktrace.h
arm64: add VMAP_STACK overflow detection
2017-08-15 18:36:18 +01:00
stage2_pgtable-nopmd.h
kvm: arm64: Get rid of fake page table levels
2016-04-21 14:58:21 +02:00
stage2_pgtable-nopud.h
kvm: arm64: Get rid of fake page table levels
2016-04-21 14:58:21 +02:00
stage2_pgtable.h
kvm: arm64: Get rid of fake page table levels
2016-04-21 14:58:21 +02:00
stat.h
UAPI: (Scripted) Disintegrate arch/arm64/include/asm
2012-10-11 11:05:13 +01:00
string.h
arm64: uaccess: Implement *_flushcache variants
2017-08-09 12:16:26 +01:00
suspend.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sync_bitops.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscall.h
arm64: Add audit support
2014-07-10 11:06:00 +01:00
sysreg.h
arm64: Add skeleton to harden the branch predictor against aliasing attacks
2018-02-16 20:22:53 +01:00
system_misc.h
Merge branch 'aarch64/for-next/ras-apei' into aarch64/for-next/core
2017-06-26 10:54:27 +01:00
thread_info.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2017-09-05 09:53:37 -07:00
timex.h
arm64: kernel: compiling issue, need delete read_current_timer()
2013-06-10 17:58:20 +01:00
tlb.h
arm64: tlbflush: avoid flushing when fullmm == 1
2015-10-07 11:56:21 +01:00
tlbflush.h
arm64: mm: Invalidate both kernel and user ASIDs when performing TLBI
2018-02-16 20:22:47 +01:00
topology.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
traps.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2017-09-05 09:53:37 -07:00
uaccess.h
arm64: uaccess: Mask __user pointers for __arch_{clear, copy_*}_user
2018-02-16 20:22:52 +01:00
unistd32.h
Remove compat_sys_getdents64()
2017-04-17 12:52:22 -04:00
unistd.h
Remove compat_sys_getdents64()
2017-04-17 12:52:22 -04:00
uprobes.h
arm64: Add uprobe support
2016-11-07 18:15:21 +00:00
vdso_datapage.h
arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO
2016-07-12 16:06:32 +01:00
vdso.h
arm64: VDSO support
2012-09-17 13:42:09 +01:00
virt.h
arm64: hyp-stub/KVM: Kill __hyp_get_vectors
2017-04-09 07:49:34 -07:00
word-at-a-time.h
Replace <asm/uaccess.h> with <linux/uaccess.h> globally
2016-12-24 11:46:01 -08:00