The patch titled
ia64: fix csum_ipv6_magic()
has been added to the -mm tree. Its filename is
ia64-fix-csum_ipv6_magic.patch
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------------------------------------------------------
Subject: ia64: fix csum_ipv6_magic()
From: Jiri Bohac <jbohac@xxxxxxx>
The 32-bit parameters (len and csum) of csum_ipv6_magic() are passed in
64-bit registers in3 and in4. The high order 32 bits of the registers
were never cleared, and garbage was sometimes calculated into the
checksum.
Fix this by clearing the high order 32 bits of the registers.
Signed-off-by: Jiri Bohac <jbohac@xxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/ia64/lib/ip_fast_csum.S | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff -puN arch/ia64/lib/ip_fast_csum.S~ia64-fix-csum_ipv6_magic arch/ia64/lib/ip_fast_csum.S
--- a/arch/ia64/lib/ip_fast_csum.S~ia64-fix-csum_ipv6_magic
+++ a/arch/ia64/lib/ip_fast_csum.S
@@ -96,20 +96,22 @@ END(ip_fast_csum)
GLOBAL_ENTRY(csum_ipv6_magic)
ld4 r20=[in0],4
ld4 r21=[in1],4
- dep r15=in3,in2,32,16
+ zxt4 in3=in3
;;
ld4 r22=[in0],4
ld4 r23=[in1],4
- mux1 r15=r15,@rev
+ dep r15=in3,in2,32,16
;;
ld4 r24=[in0],4
ld4 r25=[in1],4
- shr.u r15=r15,16
+ mux1 r15=r15,@rev
add r16=r20,r21
add r17=r22,r23
+ zxt4 in4=in4
;;
ld4 r26=[in0],4
ld4 r27=[in1],4
+ shr.u r15=r15,16
add r18=r24,r25
add r8=r16,r17
;;
_
Patches currently in -mm which might be from jbohac@xxxxxxx are
ia64-fix-csum_ipv6_magic.patch
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