From: Alexander van Heukelum <heukelum@fastmail.fm>
Date: Fri, 26 Sep 2008 12:03:02 +0000 (+0200)
Subject: traps: x86_64: add TRACE_IRQS_OFF in error_entry
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6b11d4ef3e4d6ce83fb177aa50fdf385abb17d1a;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

traps: x86_64: add TRACE_IRQS_OFF in error_entry

Add TRACE_IRQS_OFF just before entering the C code.

All exceptions are taken via interrupt gates. If irq tracing is
enabled, it should be notified as soon as possible. Interrupts
are only (conditionally) re-enabled in C code.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 25bb3f9b2552..963b35b81bcc 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1065,7 +1065,8 @@ KPROBE_ENTRY(error_entry)
 	je  error_kernelspace
 error_swapgs:	
 	SWAPGS
-error_sti:	
+error_sti:
+	TRACE_IRQS_OFF
 	movq %rdi,RDI(%rsp) 	
 	CFI_REL_OFFSET	rdi,RDI
 	movq %rsp,%rdi