The patch titled
x86: avoid early crash in disable_local_APIC()
has been added to the -mm tree. Its filename is
x86-avoid-early-crash-in-disable_local_apic.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: x86: avoid early crash in disable_local_APIC()
From: "Jan Beulich" <jbeulich@xxxxxxxxxx>
E.g. when called due to an early panic.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/apic.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN arch/x86/kernel/apic.c~x86-avoid-early-crash-in-disable_local_apic arch/x86/kernel/apic.c
--- a/arch/x86/kernel/apic.c~x86-avoid-early-crash-in-disable_local_apic
+++ a/arch/x86/kernel/apic.c
@@ -895,6 +895,10 @@ void disable_local_APIC(void)
{
unsigned int value;
+ /* APIC hasn't been mapped yet */
+ if (!apic_phys)
+ return;
+
clear_local_APIC();
/*
_
Patches currently in -mm which might be from jbeulich@xxxxxxxxxx are
i386-fix-assumed-to-be-contiguous-leaf-page-tables-for-kmap_atomic-region.patch
x86-fully-honor-nolapic.patch
x86-avoid-early-crash-in-disable_local_apic.patch
x86-simplify-highmem-related-kconfig-entries.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
