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authorKeith Owens <kaos@sgi.com>2006-06-26 13:59:41 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-26 10:48:22 -0700
commit45486f81c9aa07218b73a38cbcf62ffa66e99088 (patch)
tree8fc03b93b941c6ba3131bb016fe126f2f95e3c86 /include/asm-i386
parent9c63f8738734eb7e6d3f76ca03186f16ef88edf5 (diff)
downloadop-kernel-dev-45486f81c9aa07218b73a38cbcf62ffa66e99088.zip
op-kernel-dev-45486f81c9aa07218b73a38cbcf62ffa66e99088.tar.gz
[PATCH] x86_64: Standardize i386/x86_64 handling of NMI_VECTOR
x86_64 and i386 behave inconsistently when sending an IPI on vector 2 (NMI_VECTOR). Make both behave the same, so IPI 2 is sent as NMI. The crash code was abusing send_IPI_allbutself() by passing a code instead of a vector, it only worked because crash knew about the internal code of send_IPI_allbutself(). Change crash to use NMI_VECTOR instead, and remove the comment about how crash was abusing the function. This patch is a pre-requisite for fixing the problem where sending an IPI as NMI would reboot some Dell Xeon systems. I cannot fix that problem while crash continus to abuse send_IPI_allbutself(). It also removes the inconsistency between i386 and x86_64 for NMI_VECTOR. That will simplify all the RAS code that needs to bring all the cpus to a clean stop, even when one or more cpus are spinning disabled. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-i386')
-rw-r--r--include/asm-i386/hw_irq.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-i386/hw_irq.h b/include/asm-i386/hw_irq.h
index 95d3fd0..a4c0a5a 100644
--- a/include/asm-i386/hw_irq.h
+++ b/include/asm-i386/hw_irq.h
@@ -19,6 +19,8 @@
struct hw_interrupt_type;
+#define NMI_VECTOR 0x02
+
/*
* Various low-level irq details needed by irq.c, process.c,
* time.c, io_apic.c and smp.c
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