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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2007-11-07 01:17:02 -0500
committerPaul Mackerras <paulus@samba.org>2007-11-07 22:15:34 -0500
commita792e75d9b3dec3fc1dfef4a8c40674bbba44641 (patch)
tree1fe2d603c9e4ee37fafc0acc89b6e5e91ae293b6 /arch/powerpc
parent7e22fa4a1d9a70176e1edc4529934406e1af6054 (diff)
[POWERPC] Fix si_addr value on low level hash failures
If the low level MMU hash table insertion returns an error (which can happen in some rare circumstances when the hypervisor refuses the insertion of a PTE, typically if you try to access junk via /dev/mem), the generated signal had an incorrect si_addr value due to a bug in the assembly, which was loading it as a 32 bits quantity instead of a 64 bits quantity. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/head_64.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 97c5857faf00..c34986835a4e 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -904,7 +904,7 @@ handle_page_fault:
904 */ 904 */
90512: bl .save_nvgprs 90512: bl .save_nvgprs
906 addi r3,r1,STACK_FRAME_OVERHEAD 906 addi r3,r1,STACK_FRAME_OVERHEAD
907 lwz r4,_DAR(r1) 907 ld r4,_DAR(r1)
908 bl .low_hash_fault 908 bl .low_hash_fault
909 b .ret_from_except 909 b .ret_from_except
910 910