From: Alexander van Heukelum <heukelum@fastmail.fm>
To: Ingo Molnar <mingo@elte.hu>, lkml <linux-kernel@vger.kernel.org>
Cc: Alexander van Heukelum <heukelum@fastmail.fm>
Subject: [PATCH 1/7] traps: x86_64: add TRACE_IRQS_OFF in error_entry
Date: Fri, 26 Sep 2008 14:03:02 +0200 [thread overview]
Message-ID: <1222430588-29072-2-git-send-email-heukelum@fastmail.fm> (raw)
In-Reply-To: <1222430588-29072-1-git-send-email-heukelum@fastmail.fm>
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 <fastmail.fm>
---
arch/x86/kernel/entry_64.S | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 89434d4..78fa552 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1058,7 +1058,8 @@ 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
--
1.5.4.3
next prev parent reply other threads:[~2008-09-26 12:02 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-26 12:03 [PATCH 0/7] traps: x86: irqtrace cleanup and some traps.c unification Alexander van Heukelum
2008-09-26 12:03 ` Alexander van Heukelum [this message]
2008-09-26 12:03 ` [PATCH 2/7] traps: x86_64: add TRACE_IRQS_OFF in paranoidentry macro Alexander van Heukelum
2008-09-26 12:03 ` [PATCH 3/7] traps: x86_64: remove trace_hardirqs_fixup from DO_ERROR_INFO macro Alexander van Heukelum
2008-09-26 12:03 ` [PATCH 4/7] traps: x86_64: remove trace_hardirqs_fixup from int3 handler Alexander van Heukelum
2008-09-26 12:03 ` [PATCH 5/7] traps: x86_64: remove trace_hardirqs_fixup from debug handler Alexander van Heukelum
2008-09-26 12:03 ` [PATCH 6/7] traps: x86: remove trace_hardirqs_fixup from pagefault handler Alexander van Heukelum
2008-09-26 12:03 ` [PATCH 7/7] traps: i386: make do_trap more like x86_64 Alexander van Heukelum
2008-09-26 12:39 ` [PATCH 1/7] traps: x86_64: add TRACE_IRQS_OFF in error_entry Alexander van Heukelum
2008-09-27 16:30 ` [PATCH 0/7] traps: x86: irqtrace cleanup and some traps.c unification Ingo Molnar
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