From c3581039b6c51a778a70accec53a9bb7ad9a4d32 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 18 Jan 2013 15:12:19 +0530 Subject: ARC: Signal handling Includes following fixes courtesy review by Al-Viro * Tracer poke to Callee-regs were lost Before going off into do_signal( ) we save the user-mode callee regs (as they are not saved by default as part of pt_regs). This is to make sure that that a Tracer (if tracing related signal) is able to do likes of PEEKUSR(callee-reg). However in return path we were simply discarding the user-mode callee regs, which would break a POKEUSR(callee-reg) from a tracer. * Issue related to multiple syscall restarts are addressed in next patch Signed-off-by: Vineet Gupta Cc: Al Viro Acked-by: Jonas Bonn --- arch/arc/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arc/Kconfig') diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index a4e9806ace23..756beffd20cb 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -20,6 +20,7 @@ config ARC select GENERIC_KERNEL_EXECVE select GENERIC_KERNEL_THREAD select GENERIC_PENDING_IRQ if SMP + select GENERIC_SIGALTSTACK select GENERIC_SMP_IDLE_THREAD select HAVE_GENERIC_HARDIRQS select MODULES_USE_ELF_RELA -- cgit v1.2.3