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linux/arch/arm64/include/asm
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Marc Zyngier cbdf8a189a arm64: Force SSBS on context switch 
On a CPU that doesn't support SSBS, PSTATE[12] is RES0.  In a system
where only some of the CPUs implement SSBS, we end-up losing track of
the SSBS bit across task migration.

To address this issue, let's force the SSBS bit on context switch.

Fixes: 8f04e8e6e29c ("arm64: ssbd: Add support for PSTATE.SSBS rather than trapping to EL3")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
[will: inverted logic and added comments]
Signed-off-by: Will Deacon <will@kernel.org>
2019-07-22 15:24:16 +01:00
..
vdso
arm64: compat: Fix __arch_get_hw_counter() implementation
2019-06-26 14:26:54 +02:00
xen
arm64/xen: fix xen-swiotlb cache flushing
2019-01-23 22:14:56 +01:00
acenv.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
acpi.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
alternative.h
arm64: alternative: Apply alternatives early in boot process
2019-02-06 10:05:20 +00:00
arch_gicv3.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
arch_timer.h
Merge branch 'timers/vdso' into timers/core
2019-07-03 10:50:21 +02:00
arm_dsu_pmu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
arm-cci.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
asm-bug.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
asm-offsets.h
…
asm-prototypes.h
arm64: asm-prototypes: Fix fat-fingered typo in comment
2019-01-10 11:11:46 +00:00
asm-uaccess.h
arm64: Rename get_thread_info()
2019-02-26 16:57:59 +00:00
assembler.h
arm64: assembler: Switch ESB-instruction with a vanilla nop if !ARM64_HAS_RAS
2019-07-05 13:03:29 +01:00
atomic_ll_sc.h
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 16:12:03 -07:00
atomic_lse.h
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 16:12:03 -07:00
atomic.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
barrier.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
bitops.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +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
treewide: replace #include <asm/sizes.h> with #include <linux/sizes.h>
2019-05-14 19:52:52 -07:00
brk-imm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
bug.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cache.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
cacheflush.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
checksum.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
compat.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cpu_ops.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cpu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cpucaps.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
cpufeature.h
ARM:
2019-07-12 15:35:14 -07:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +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
daifflags.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
dcc.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284
2019-06-05 17:36:37 +02:00
debug-monitors.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
device.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
dma-mapping.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
dmi.h
arm64: dmi: Add SMBIOS/DMI support
2014-11-05 09:03:25 +01:00
efi.h
docs: arm64: convert docs to ReST and rename to .rst
2019-06-14 14:20:27 -06:00
elf.h
arm64: vdso: Fix population of AT_SYSINFO_EHDR for compat vdso
2019-07-22 10:33:42 +01:00
esr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
exception.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
exec.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
fixmap.h
firmware: arm_sdei: Add ACPI GHES registration helper
2019-02-11 11:07:49 +01:00
fpsimd.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
fpsimdmacros.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
ftrace.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
futex.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
hardirq.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
hugetlb.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
hw_breakpoint.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
hwcap.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
hypervisor.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
image.h
docs: arm64: convert docs to ReST and rename to .rst
2019-06-14 14:20:27 -06:00
insn.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
io.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
arm64: Use the new GENERIC_IRQ_MULTI_HANDLER
2018-08-03 12:14:09 +02:00
irqflags.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
jump_label.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kasan.h
kasan: add tag related helper functions
2018-12-28 12:11:43 -08:00
Kbuild
treewide: Add SPDX license identifier - Kbuild
2019-05-30 11:32:33 -07:00
kernel-pgtable.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kexec.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
kgdb.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kprobes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
kvm_arm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kvm_asm.h
KVM: arm64: Consume pending SError as early as possible
2019-07-05 13:03:29 +01:00
kvm_coproc.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kvm_emulate.h
KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s
2019-07-05 13:57:25 +01:00
kvm_host.h
ARM:
2019-07-12 15:35:14 -07:00
kvm_hyp.h
KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s
2019-07-05 13:57:25 +01:00
kvm_mmio.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kvm_mmu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
kvm_ptrauth.h
KVM: arm/arm64: Context-switch ptrauth registers
2019-04-24 15:30:40 +01:00
kvm_ras.h
arm64: KVM/mm: Move SEA handling behind a single 'claim' interface
2019-02-07 23:10:45 +01:00
linkage.h
arm64: relax assembly code alignment from 16 byte to 4 byte
2017-09-18 11:20:19 +01:00
lse.h
arm64: lse: Include compiler_types.h and export.h for out-of-line LL/SC
2018-03-27 13:14:49 +01:00
memory.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
mmu_context.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
mmu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
neon-intrinsics.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
neon.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
numa.h
arm64: numa: separate out updates to percpu nodeid and NUMA node cpumap
2018-07-06 13:18:18 +01:00
page-def.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
page.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
paravirt.h
x86/paravirt: Use a single ops structure
2018-09-03 16:50:35 +02:00
pci.h
PCI: remove PCI_DMA_BUS_IS_PHYS
2018-05-07 07:15:41 +02:00
percpu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
perf_event.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
pgalloc.h
arm64: switch to generic version of pte allocation
2019-07-12 11:05:45 -07:00
pgtable-hwdef.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
pgtable-prot.h
arm64: mm: implement pte_devmap support
2019-07-16 19:23:25 -07:00
pgtable-types.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
pgtable.h
arm64: mm: Drop pte_huge()
2019-07-22 12:06:38 +01:00
pointer_auth.h
arm64: Use the correct style for SPDX License Identifier
2019-04-16 16:28:01 +01:00
preempt.h
arm64: preempt: Provide our own implementation of asm/preempt.h
2018-12-07 12:35:53 +00:00
probes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
proc-fns.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
processor.h
arm64: Force SSBS on context switch
2019-07-22 15:24:16 +01:00
ptdump.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
ptrace.h
asm-generic: remove ptrace.h
2019-07-12 15:41:33 -07:00
sdei.h
arm64: Use the correct style for SPDX License Identifier
2019-04-16 16:28:01 +01:00
seccomp.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
sections.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
shmparam.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
signal32.h
arm64: compat: Expose signal related structures
2019-06-22 21:21:07 +02:00
simd.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
smp_plat.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
smp.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
sparsemem.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
spinlock_types.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
spinlock.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +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
arm64: enable per-task stack canaries
2018-12-12 18:45:31 +00:00
stacktrace.h
arm64: stacktrace: Better handle corrupted stacks
2019-07-22 11:44:15 +01:00
stage2_pgtable.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
stat.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
string.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
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
arm64, locking/atomics: Use instrumented atomics
2018-11-01 11:01:40 +01:00
syscall_wrapper.h
arm64: use the correct function type in SYSCALL_DEFINE0
2019-05-29 13:45:59 +01:00
syscall.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
sysreg.h
arch: replace _BITUL() in kernel-space headers with BIT()
2019-07-16 19:23:22 -07:00
system_misc.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
thread_info.h
arm64 updates for 5.3:
2019-07-08 09:54:55 -07:00
timex.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
tlb.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
tlbflush.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
topology.h
sched/topology, arch/arm64: Rebuild the sched_domain hierarchy when the CPU capacity changes
2018-09-10 11:05:47 +02:00
traps.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
uaccess.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
unistd32.h
clone3-v5.3
2019-07-11 10:09:44 -07:00
unistd.h
clone3-v5.3
2019-07-11 10:09:44 -07:00
uprobes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
vdso_datapage.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
vdso.h
arm64: compat: Get sigreturn trampolines from vDSO
2019-06-22 21:21:09 +02:00
virt.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
vmap_stack.h
arm64: Use the correct style for SPDX License Identifier
2019-04-16 16:28:01 +01:00
word-at-a-time.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
xor.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00