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qemu: cirrus reset-related fixes

Michael S. Tsirkin kvm qemu-devel 2 versions New

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  1. v2 Latest0 of 4 patches 0 repliesNew
  2. v10 of 3 patches 2 repliesSuperseded

Patches in v2 No applies recorded yet

None of the 4 patches the cover letter announces are in this archive.

Reviews trailers per patch

No Reviewed-by, Acked-by or Tested-by trailers for v2 yet.

Read the v2 thread

Cover letter [PATCHv2 0/4] qemu: cirrus 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.

Reposting fom qemu tree now.

So I just sent patches for pcbios and seabios to fix this. Once applied, reset works fine. Further, we can also fix PCI incompliancy in cirrus, disabling memory and i/o on reset.

To apply these patches:
- apply pcbios and seabios patches
- generate binaries and commit
- apply this patchset

Michael S. Tsirkin (4):
qemu: update pcbios to enable i/o for cirrus
qemu: update seabios to enable i/o for cirrus
qemu: make cirrus init value pci spec compliant
qemu: cleanup unused macros in cirrus

 hw/cirrus_vga.c |   38 +-------------------------------------
 roms/pcbios     |    2 +-
 roms/seabios    |    2 +-
 3 files changed, 3 insertions(+), 39 deletions(-)
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