From: Alexander van Heukelum <heukelum@fastmail.fm>
Date: Fri, 26 Sep 2008 12:03:03 +0000 (+0200)
Subject: traps: x86_64: add TRACE_IRQS_OFF in paranoidentry macro
X-Git-Tag: v2.6.28-rc1~611^2~43
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=7e61a7932495e37685e95ec9a59ad08810dec959;p=linux-2.6-omap-h63xx.git

traps: x86_64: add TRACE_IRQS_OFF in paranoidentry macro

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 963b35b81bc..977c8ea6602 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -939,6 +939,9 @@ END(spurious_interrupt)
 	.if \ist
 	movq	%gs:pda_data_offset, %rbp
 	.endif
+	.if \irqtrace
+	TRACE_IRQS_OFF
+	.endif
 	movq %rsp,%rdi
 	movq ORIG_RAX(%rsp),%rsi
 	movq $-1,ORIG_RAX(%rsp)