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| author | Sami Tolvanen <samitolvanen@google.com> | 2020-04-27 09:00:17 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-05-15 16:35:50 +0100 |
| commit | 439dc2a11727314cdc3ad0ad13c122d910dae411 (patch) | |
| tree | 834b05b4832d10d3b9f3e4c003e0bf882152096b /arch/arm64/kernel/scs.c | |
| parent | 5287569a790d2546a06db07e391bf84b8bd6cf51 (diff) | |
| download | linux-439dc2a11727314cdc3ad0ad13c122d910dae411.tar.bz2 | |
arm64: scs: Add shadow stacks for SDEI
This change adds per-CPU shadow call stacks for the SDEI handler.
Similarly to how the kernel stacks are handled, we add separate shadow
stacks for normal and critical events.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: James Morse <james.morse@arm.com>
Tested-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/scs.c')
| -rw-r--r-- | arch/arm64/kernel/scs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/scs.c b/arch/arm64/kernel/scs.c index acc6741d1a40..adc97f826fab 100644 --- a/arch/arm64/kernel/scs.c +++ b/arch/arm64/kernel/scs.c @@ -13,3 +13,8 @@ DEFINE_PER_CPU(unsigned long [SCS_SIZE/sizeof(long)], name) \ DEFINE_SCS(irq_shadow_call_stack); + +#ifdef CONFIG_ARM_SDE_INTERFACE +DEFINE_SCS(sdei_shadow_call_stack_normal); +DEFINE_SCS(sdei_shadow_call_stack_critical); +#endif |