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qemu: reset-related fixes

PATCH Superseded Michael S. Tsirkin 2 participants 3 messages Oct 8, 2009 KVM

v1 of 2 Superseded Latest is v2 →

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cover qemu: reset-related fixes

Quoted 6 lines · Avi Kivity
Quoted 3 lines

Reset BARs and a couple of other registers on bus reset, as per PCI spec.

This commit breaks Windows XP restart. After a restart Windows switches from 800x600 cirrus logic vga to 640x480 standard vga.

So I think this is a bios bug. Patchset fixing this applied.

So, what's the best way to propagate the fixes upstream? Avi, Anthony, please advise.

Avi, after applying this, you need to generate a new bios binary.

Anthony, qemu keeps bios binaries in source tree.
I can't post a patch changing these, can I?
Only people with git access can change them.

BTW, can't we keep the sources around the like qemu-kvm does? It would be best if pc-bios used git, then we would include a submodule, as it is we can set up a git-cvs mirror at qemu site, and then include a submodule. Makes sense?

Michael S. Tsirkin (3):
pc-bios: enable io/memory unconditionally
qemu: make cirrus init value pci spec compliant
qemu: cleanup unused macros in cirrus

 hw/cirrus_vga.c      |   38 +-------------------------------------
 kvm/bios/rombios32.c |   18 +++++++-----------
 2 files changed, 8 insertions(+), 48 deletions(-)
Signature · 1 line
MST
#1 lore raw
Quoted 19 lines · Michael S. Tsirkin
Quoted 6 lines · Avi Kivity
Quoted 3 lines

Reset BARs and a couple of other registers on bus reset, as per PCI spec.

This commit breaks Windows XP restart. After a restart Windows switches from 800x600 cirrus logic vga to 640x480 standard vga.

So I think this is a bios bug. Patchset fixing this applied.

So, what's the best way to propagate the fixes upstream? Avi, Anthony, please advise.

Avi, after applying this, you need to generate a new bios binary.

Anthony, qemu keeps bios binaries in source tree.
I can't post a patch changing these, can I?
Only people with git access can change them.

Quoted 5 lines

BTW, can't we keep the sources around the like qemu-kvm does? It would be best if pc-bios used git, then we would include a submodule, as it is we can set up a git-cvs mirror at qemu site, and then include a submodule. Makes sense?

On this last point, it was pointed out to me that this is what we have already. Sorry about the noise.

Quoted 13 lines

Michael S. Tsirkin (3):
pc-bios: enable io/memory unconditionally
qemu: make cirrus init value pci spec compliant
qemu: cleanup unused macros in cirrus

 hw/cirrus_vga.c      |   38 +-------------------------------------
 kvm/bios/rombios32.c |   18 +++++++-----------
 2 files changed, 8 insertions(+), 48 deletions(-)
Signature · 1 line
MST
#2 lore raw
In reply to Michael S. Tsirkin
Quoted 20 lines · Michael S. Tsirkin
Quoted 6 lines · Avi Kivity
Quoted 4 lines

Reset BARs and a couple of other registers on bus reset, as per PCI spec.

This commit breaks Windows XP restart. After a restart Windows switches from 800x600 cirrus logic vga to 640x480 standard vga.

So I think this is a bios bug. Patchset fixing this applied.

So, what's the best way to propagate the fixes upstream? Avi, Anthony, please advise.

Avi, after applying this, you need to generate a new bios binary.

Anthony, qemu keeps bios binaries in source tree.
I can't post a patch changing these, can I?
Only people with git access can change them.

Quoted 6 lines

BTW, can't we keep the sources around the like qemu-kvm does? It would be best if pc-bios used git, then we would include a submodule, as it is we can set up a git-cvs mirror at qemu site, and then include a submodule. Makes sense?

This is exactly what we do. Look at roms/pc-bios.

Signature · 3 lines
Regards,

Anthony Liguori