[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] PCI Bios fixup
|
From: |
Samuel Thibault |
|
Subject: |
[Qemu-devel] PCI Bios fixup |
|
Date: |
Thu, 7 Sep 2006 03:02:29 +0200 |
|
User-agent: |
Mutt/1.5.12-2006-07-14 |
Hi,
The patch that qemu applies to bochs bios is a bit bugged:
pci_pro_fail:
pop edi
pop esi
- sti
popf
stc
+ and dword ptr[esp+4],0xfffffffc ;; reset CS.RPL for kqemu
retf
The and operation clears carry... So that pci functions always leave
carry clear, and hence tell operating systems that they always work...
This should rather be:
pci_pro_fail:
pop edi
pop esi
- sti
popf
+ and dword ptr[esp+4],0xfffffffc ;; reset CS.RPL for kqemu
stc
retf
Samuel
- [Qemu-devel] PCI Bios fixup,
Samuel Thibault <=