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OvmfPkg/QemuVideoDxe/VbeShim: rename Status to Segment0AllocationStatus

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This clarifies the purpose of the local variable in InstallVbeShim().

Cc: Aleksei Kovura <alex3kov@zoho.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Ref: https://bugs.launchpad.net/qemu/+bug/1715700
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Aleksei Kovura <alex3kov@zoho.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Laszlo Ersek 2017-09-19 16:48:36 +02:00
parent ba1d245f1d
commit ce461ae240
1 changed files with 14 additions and 6 deletions
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20
OvmfPkg/QemuVideoDxe/VbeShim.c
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@ -63,7 +63,7 @@ InstallVbeShim (
EFI_PHYSICAL_ADDRESS Segment0, SegmentC, SegmentF; EFI_PHYSICAL_ADDRESS Segment0, SegmentC, SegmentF;
UINTN Segment0Pages; UINTN Segment0Pages;
IVT_ENTRY *Int0x10; IVT_ENTRY *Int0x10;
EFI_STATUS Status; EFI_STATUS Segment0AllocationStatus;
UINTN Pam1Address; UINTN Pam1Address;
UINT8 Pam1; UINT8 Pam1;
UINTN SegmentCPages; UINTN SegmentCPages;
@ -87,10 +87,14 @@ InstallVbeShim (
// //
Segment0Pages = 1; Segment0Pages = 1;
Int0x10 = (IVT_ENTRY *)(UINTN)Segment0 + 0x10; Int0x10 = (IVT_ENTRY *)(UINTN)Segment0 + 0x10;
Status = gBS->AllocatePages (AllocateAddress, EfiBootServicesCode, Segment0AllocationStatus = gBS->AllocatePages (
Segment0Pages, &Segment0); AllocateAddress,
EfiBootServicesCode,
Segment0Pages,
&Segment0
);
if (EFI_ERROR (Status)) { if (EFI_ERROR (Segment0AllocationStatus)) {
EFI_PHYSICAL_ADDRESS Handler; EFI_PHYSICAL_ADDRESS Handler;
// //
@ -109,8 +113,12 @@ InstallVbeShim (
// Otherwise we'll overwrite the Int10h vector, even though we may not own // Otherwise we'll overwrite the Int10h vector, even though we may not own
// the page at zero. // the page at zero.
// //
DEBUG ((EFI_D_INFO, "%a: failed to allocate page at zero: %r\n", DEBUG ((
__FUNCTION__, Status)); DEBUG_INFO,
"%a: failed to allocate page at zero: %r\n",
__FUNCTION__,
Segment0AllocationStatus
));
} else { } else {
// //
// We managed to allocate the page at zero. SVN r14218 guarantees that it // We managed to allocate the page at zero. SVN r14218 guarantees that it