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powerpc: Copy down exception vectors after feature fixups

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kdump fails because we try to execute an HV only instruction. Feature
fixups are being applied after we copy the exception vectors down to 0
so they miss out on any updates.

We have always had this issue but it only became critical in v3.0
when we added CFAR support (breaks POWER5) and v3.1 when we added
POWERNV (breaks everyone).

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> [v3.0+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2011-11-14 12:54:47 +00:00
committed by Benjamin Herrenschmidt
parent 6d1e2c6c1a
commit d715e433b7
6 changed files with 28 additions and 2 deletions
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2
arch/powerpc/include/asm/sections.h
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@@ -8,7 +8,7 @@
#ifdef __powerpc64__
extern char _end[];
extern char __end_interrupts[];
static inline int in_kernel_text(unsigned long addr)
{

1
arch/powerpc/include/asm/synch.h
View File

@@ -13,6 +13,7 @@
extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
void *fixup_end);
extern void do_final_fixups(void);
static inline void eieio(void)
{