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[Xen-changelog] [xen-unstable] rombios: Protect the ax register before c

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Subject:	[Xen-changelog] [xen-unstable] rombios: Protect the ax register before calling the TCG BIOS extensions function.
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Fri, 16 Jan 2009 08:35:09 -0800
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1232022909 0
# Node ID 5b75d99acf9c970dac9775d0d988554bd678bda3
# Parent  10a8fae412c5e1b1cd24e58f94f780f180b84ab8
rombios: Protect the ax register before calling the TCG BIOS extensions 
function.

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx>
---
 tools/firmware/rombios/rombios.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r 10a8fae412c5 -r 5b75d99acf9c tools/firmware/rombios/rombios.c
--- a/tools/firmware/rombios/rombios.c  Wed Jan 14 13:43:17 2009 +0000
+++ b/tools/firmware/rombios/rombios.c  Thu Jan 15 12:35:09 2009 +0000
@@ -10447,7 +10447,9 @@ rom_scan:
   ;;   3         ROM initialization entry point (FAR CALL)
 
 #if BX_TCGBIOS
+  push ax
   call _tcpa_start_option_rom_scan    /* specs: 3.2.3.3 + 10.4.3 */
+  pop ax
 #endif
 
 rom_scan_loop:

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