diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2021-06-07 10:46:20 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-06-07 11:35:56 +0100 |
| commit | 8168f098867f6584295ea408c683f61e945c6ff1 (patch) | |
| tree | 5f39f2af949795d16569adfc0a6b88762369c9c9 /arch/arm64/include/asm/exception.h | |
| parent | afd05e28c9115d01f01d934962634789d069d3fe (diff) | |
| download | linux-8168f098867f6584295ea408c683f61e945c6ff1.tar.bz2 | |
arm64: entry: split bad stack entry
We'd like to keep all the entry sequencing in entry-common.c, as this
will allow us to ensure this is consistent, and free from any unsound
instrumentation.
Currently handle_bad_stack() performs the NMI entry sequence in traps.c.
Let's split the low-level entry sequence from the reporting, moving the
former to entry-common.c and keeping the latter in traps.c. To make it
clear that reporting function never returns, it is renamed to
panic_bad_stack().
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210607094624.34689-17-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/exception.h')
| -rw-r--r-- | arch/arm64/include/asm/exception.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h index ad30a5a1d2bf..0113b9242b67 100644 --- a/arch/arm64/include/asm/exception.h +++ b/arch/arm64/include/asm/exception.h @@ -31,6 +31,8 @@ static inline u32 disr_to_esr(u64 disr) return esr; } +asmlinkage void handle_bad_stack(struct pt_regs *regs); + asmlinkage void el1t_64_sync_handler(struct pt_regs *regs); asmlinkage void el1t_64_irq_handler(struct pt_regs *regs); asmlinkage void el1t_64_fiq_handler(struct pt_regs *regs); @@ -73,4 +75,6 @@ void do_el0_svc(struct pt_regs *regs); void do_el0_svc_compat(struct pt_regs *regs); void do_ptrauth_fault(struct pt_regs *regs, unsigned int esr); void do_serror(struct pt_regs *regs, unsigned int esr); + +void panic_bad_stack(struct pt_regs *regs, unsigned int esr, unsigned long far); #endif /* __ASM_EXCEPTION_H */ |