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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 11:43:08 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-04 03:15:57 +0400 |
| commit | 1e974c21661db89b30eb13040fc9ab99a83b6492 (patch) | |
| tree | cc8c987b339865ea850ea41c5aa00fa7e5c7d084 /arch/hexagon | |
| parent | 0aa0203fb43f04714004b2c4ad33b858e240555d (diff) | |
| download | linux-1e974c21661db89b30eb13040fc9ab99a83b6492.tar.xz | |
hexagon: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/hexagon')
| -rw-r--r-- | arch/hexagon/Kconfig | 1 | ||||
| -rw-r--r-- | arch/hexagon/kernel/signal.c | 15 |
2 files changed, 2 insertions, 14 deletions
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 0744f7d7b1fd..3e6e27c11f93 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -31,6 +31,7 @@ config HEXAGON select GENERIC_CLOCKEVENTS select GENERIC_CLOCKEVENTS_BROADCAST select MODULES_USE_ELF_RELA + select GENERIC_SIGALTSTACK ---help--- Qualcomm Hexagon is a processor architecture designed for high performance and low power across a wide variety of applications. diff --git a/arch/hexagon/kernel/signal.c b/arch/hexagon/kernel/signal.c index fe0d1373165d..46ebd4794663 100644 --- a/arch/hexagon/kernel/signal.c +++ b/arch/hexagon/kernel/signal.c @@ -247,12 +247,6 @@ void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags) /* * Architecture-specific wrappers for signal-related system calls */ -asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - struct pt_regs *regs = current_pt_regs(); - - return do_sigaltstack(uss, uoss, regs->r29); -} asmlinkage int sys_rt_sigreturn(void) { @@ -288,14 +282,7 @@ asmlinkage int sys_rt_sigreturn(void) */ regs->syscall_nr = __NR_rt_sigreturn; - /* - * If we were meticulous, we'd only call this if we knew that - * we were actually going to use an alternate stack, and we'd - * consider any error to be fatal. What we do here, in common - * with many other architectures, is call it blindly and only - * consider the -EFAULT return case to be proof of a problem. - */ - if (do_sigaltstack(&frame->uc.uc_stack, NULL, pt_psp(regs)) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return 0; |