[Xen-changelog] [xen-unstable] hvmloader: ROMBIOS must POST in big real mode, since it supports PMM,

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

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1238504690 -3600
# Node ID 909bb1245930f493372e080574349d95879f4c52
# Parent  011f4fbf46b2ffe19a853f3f213befe961df49ff
hvmloader: ROMBIOS must POST in big real mode, since it supports PMM,
and hence Option ROMs can expect noi segment limit checks.

Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 tools/firmware/hvmloader/hvmloader.c  |    4 ++--
 tools/firmware/rombios/32bitgateway.c |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff -r 011f4fbf46b2 -r 909bb1245930 tools/firmware/hvmloader/hvmloader.c
--- a/tools/firmware/hvmloader/hvmloader.c      Tue Mar 31 13:57:11 2009 +0100
+++ b/tools/firmware/hvmloader/hvmloader.c      Tue Mar 31 14:04:50 2009 +0100
@@ -88,8 +88,8 @@ asm (
     "    .align 8                    \n"
     "gdt:                            \n"
     "    .quad 0x0000000000000000    \n"
-    "    .quad 0x00009a000000ffff    \n" /* Ring 0 code, base 0 limit 0xffff */
-    "    .quad 0x000092000000ffff    \n" /* Ring 0 data, base 0 limit 0xffff */
+    "    .quad 0x008f9a000000ffff    \n" /* Ring 0 16b code, base 0 limit 4G */
+    "    .quad 0x008f92000000ffff    \n" /* Ring 0 16b data, base 0 limit 4G */
     "gdt_end:                        \n"
     "                                \n"
     "    .bss                        \n"
diff -r 011f4fbf46b2 -r 909bb1245930 tools/firmware/rombios/32bitgateway.c
--- a/tools/firmware/rombios/32bitgateway.c     Tue Mar 31 13:57:11 2009 +0100
+++ b/tools/firmware/rombios/32bitgateway.c     Tue Mar 31 14:04:50 2009 +0100
@@ -56,13 +56,13 @@ gdt_entry_pm_32bit_cs:
     .byte 0x00, 0x9b, 0xcf, 0x00
 gdt_entry_pm_16bit_cs:
     .word 0xffff, 0x0000
-    .byte REAL_MODE_CODE_OFFSET >> 16, 0x9b, 0x0, 0x0
+    .byte REAL_MODE_CODE_OFFSET >> 16, 0x9b, 0x8f, 0x0
 gdt_entry_pm_32bit_ds:
     .word 0xffff, 0x0000
     .byte 0x0, 0x93, 0xcf, 0x0
 gdt_entry_pm_16bit_ds:
     .word 0xffff, 0x0000
-    .byte 0x0, 0x93, 0x0, 0x0
+    .byte 0x0, 0x93, 0x8f, 0x0
 gdt_entry_end:
 
 protmode_gdtdesc:

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