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| author | Kees Cook <keescook@chromium.org> | 2022-02-23 22:04:32 -0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2022-03-01 16:57:55 +0100 |
| commit | 200ed341b8646ea893d5466974d6e107c46237ba (patch) | |
| tree | 2d383f792532c602e251a3316a141c9e3d4c563d /arch/mips/kernel/irq.c | |
| parent | 455481fc9a807798eca05f6fb0918ab88109d845 (diff) | |
| download | linux-200ed341b8646ea893d5466974d6e107c46237ba.tar.gz linux-200ed341b8646ea893d5466974d6e107c46237ba.tar.bz2 linux-200ed341b8646ea893d5466974d6e107c46237ba.zip | |
mips: Implement "current_stack_pointer"
To follow the existing per-arch conventions replace open-coded uses
of asm "sp" as "current_stack_pointer". This will let it be used in
non-arch places (like HARDENED_USERCOPY).
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Yanteng Si <siyanteng01@gmail.com>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/kernel/irq.c')
| -rw-r--r-- | arch/mips/kernel/irq.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c index 5e11582fe308..fc313c49a417 100644 --- a/arch/mips/kernel/irq.c +++ b/arch/mips/kernel/irq.c @@ -75,9 +75,8 @@ void __init init_IRQ(void) #ifdef CONFIG_DEBUG_STACKOVERFLOW static inline void check_stack_overflow(void) { - unsigned long sp; + unsigned long sp = current_stack_pointer; - __asm__ __volatile__("move %0, $sp" : "=r" (sp)); sp &= THREAD_MASK; /* |