diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2024-09-27 08:13:52 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-09-27 08:13:52 +0200 |
| commit | 3a39d672e7f48b8d6b91a09afa4b55352773b4b5 (patch) | |
| tree | f7ec4043b508f48430dd09ac338c38acf7d5a6cd /arch/powerpc/kernel/process.c | |
| parent | 151ac45348afc5b56baa584c7cd4876addf461ff (diff) | |
| parent | 62a0e2fa40c5c06742b8b4997ba5095a3ec28503 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts and no adjacent changes.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 3b506d4c55f3..ff61a3e7984c 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -72,8 +72,6 @@ #define TM_DEBUG(x...) do { } while(0) #endif -extern unsigned long _get_SP(void); - #ifdef CONFIG_PPC_TRANSACTIONAL_MEM /* * Are we running in "Suspend disabled" mode? If so we have to block any @@ -2177,10 +2175,10 @@ static inline int valid_irq_stack(unsigned long sp, struct task_struct *p, return 0; } +#ifdef CONFIG_PPC64 static inline int valid_emergency_stack(unsigned long sp, struct task_struct *p, unsigned long nbytes) { -#ifdef CONFIG_PPC64 unsigned long stack_page; unsigned long cpu = task_cpu(p); @@ -2208,10 +2206,26 @@ static inline int valid_emergency_stack(unsigned long sp, struct task_struct *p, if (sp >= stack_page && sp <= stack_page + THREAD_SIZE - nbytes) return 1; # endif -#endif return 0; } +#else +static inline int valid_emergency_stack(unsigned long sp, struct task_struct *p, + unsigned long nbytes) +{ + unsigned long stack_page; + unsigned long cpu = task_cpu(p); + + if (!IS_ENABLED(CONFIG_VMAP_STACK)) + return 0; + + stack_page = (unsigned long)emergency_ctx[cpu] - THREAD_SIZE; + if (sp >= stack_page && sp <= stack_page + THREAD_SIZE - nbytes) + return 1; + + return 0; +} +#endif /* * validate the stack frame of a particular minimum size, used for when we are |