From e6978e4bf181fb3b5f8cb6f71b4fe30fbf1b655c Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 13 May 2016 11:40:20 +0100 Subject: ARM: save and reset the address limit when entering an exception When we enter an exception, the current address limit should not apply to the exception context: if the exception context wishes to access kernel space via the user accessors (eg, perf code), it must explicitly request such access. Acked-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/ptrace.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/include/asm') diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 0ef0093..e9c9a11 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -22,7 +22,7 @@ struct pt_regs { struct svc_pt_regs { struct pt_regs regs; u32 dacr; - u32 unused; + u32 addr_limit; }; #define to_svc_pt_regs(r) container_of(r, struct svc_pt_regs, regs) -- cgit v1.1