Mahesh Salgaonkar 729b0f7153 powerpc/book3s: Introduce exclusive emergency stack for machine check exception. ... This patch introduces exclusive emergency stack for machine check exception. We use emergency stack to handle machine check exception so that we can save MCE information (srr1, srr0, dar and dsisr) before turning on ME bit and be ready for re-entrancy. This helps us to prevent clobbering of MCE information in case of nested machine checks. The reason for using emergency stack over normal kernel stack is that the machine check might occur in the middle of setting up a stack frame which may result into improper use of kernel stack. Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>		2013-12-05 16:02:05 +11:00
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ansidecl.h
dis-asm.h
Makefile	powerpc: Build kernel with -mcmodel=medium	2013-01-10 17:00:31 +11:00
nonstdio.c	powerpc/xmon: Fallback to printk() in xmon_printf() if udbg is not setup	2012-11-15 13:00:02 +11:00
nonstdio.h	powerpc/xmon: Merge start.c into nonstdio.c	2012-11-15 12:59:46 +11:00
ppc-dis.c
ppc-opc.c	bug.h: add include of it to various implicit C users	2012-02-29 17:15:08 -05:00
ppc.h
spu-dis.c
spu-insns.h
spu-opc.c	bug.h: add include of it to various implicit C users	2012-02-29 17:15:08 -05:00
spu.h
xmon.c	powerpc/book3s: Introduce exclusive emergency stack for machine check exception.	2013-12-05 16:02:05 +11:00