From: Steven Rostedt <rostedt@goodmis.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Subject: [PATCH RT] enable interrupts in do_page_fault for users (take 2 - add i386 fix too)
Date: Wed, 06 Jun 2007 21:42:27 -0400 [thread overview]
Message-ID: <1181180547.18444.33.camel@localhost.localdomain> (raw)
In-Reply-To: <1180740062.21781.53.camel@localhost.localdomain>
Thomas,
Can you replace my previous patch with this one. This one includes the
fix for i386.
-- Steve
Index: linux-2.6.21-rt9/arch/x86_64/mm/fault.c
===================================================================
--- linux-2.6.21-rt9.orig/arch/x86_64/mm/fault.c
+++ linux-2.6.21-rt9/arch/x86_64/mm/fault.c
@@ -476,6 +476,10 @@ bad_area:
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
if (error_code & PF_USER) {
+
+ /* it's possible to have interrupts off here */
+ local_irq_enable();
+
if (is_prefetch(regs, address, error_code))
return;
Index: linux-2.6.21-rt9/arch/i386/mm/fault.c
===================================================================
--- linux-2.6.21-rt9.orig/arch/i386/mm/fault.c
+++ linux-2.6.21-rt9/arch/i386/mm/fault.c
@@ -459,6 +459,10 @@ bad_area:
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
if (error_code & 4) {
+
+ /* it's possible to have interrupts off here */
+ local_irq_enable();
+
/*
* Valid to do another page fault here because this one came
* from user space.
prev parent reply other threads:[~2007-06-07 1:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-01 23:21 [PATCH RT] enable interrupts in do_page_fault for users Steven Rostedt
2007-06-07 1:42 ` Steven Rostedt [this message]
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