[Xen-changelog] Fix my previous patch to the trap-frame creation code

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID ebf05456ee11174c1a28aa678a438af56c8c1fb4
# Parent  8004acaa668454c75c4d02d634b2af3a84f6f8c1
Fix my previous patch to the trap-frame creation code
in Xen. I was clobbering an in-use register (AL): use
CH instead.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r 8004acaa6684 -r ebf05456ee11 xen/arch/x86/x86_32/entry.S
--- a/xen/arch/x86/x86_32/entry.S       Thu Aug  4 16:53:30 2005
+++ b/xen/arch/x86/x86_32/entry.S       Thu Aug  4 17:37:09 2005
@@ -335,8 +335,8 @@
         movl VCPU_vcpu_info(%ebx),%eax
         pushl VCPUINFO_upcall_mask(%eax)
         testb $TBF_INTERRUPT,%cl
-        setnz %al                        # TBF_INTERRUPT -> set upcall mask
-        orb  %al,VCPUINFO_upcall_mask(%eax)
+        setnz %ch                        # TBF_INTERRUPT -> set upcall mask
+        orb  %ch,VCPUINFO_upcall_mask(%eax)
         popl %eax
         shll $16,%eax                    # Bits 16-23: saved_upcall_mask
         movw UREGS_cs+4(%esp),%ax        # Bits  0-15: CS
diff -r 8004acaa6684 -r ebf05456ee11 xen/arch/x86/x86_64/entry.S
--- a/xen/arch/x86/x86_64/entry.S       Thu Aug  4 16:53:30 2005
+++ b/xen/arch/x86/x86_64/entry.S       Thu Aug  4 17:37:09 2005
@@ -314,8 +314,8 @@
         movq  VCPU_vcpu_info(%rbx),%rax
         pushq VCPUINFO_upcall_mask(%rax)
         testb $TBF_INTERRUPT,%cl
-        setnz %al                       # TBF_INTERRUPT -> set upcall mask
-        orb   %al,VCPUINFO_upcall_mask(%rax)
+        setnz %ch                       # TBF_INTERRUPT -> set upcall mask
+        orb   %ch,VCPUINFO_upcall_mask(%rax)
         popq  %rax
         shlq  $32,%rax                  # Bits 32-39: saved_upcall_mask
         movw  UREGS_cs+8(%rsp),%ax      # Bits  0-15: CS

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