[v3] Fix reset issue with QEMU -machine q35

[SeaBIOS] [PATCH v3 0/2] Fix reset issue with QEMU -machine q35

Volker Rümelin posted 2 patches 2 years ago

Diff against v1 v2
Download series mbox

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/seabios tags/patchew/d1540b28-46fb-8e28-01d1-98bf6dccd723@t-online.de

src/fw/shadow.c | 14 ++++-----
src/hw/pci.c    | 81 +++++++++++++++++++++++++++++++++++++++++--------
src/hw/pci.h    | 18 ++++++++++-
3 files changed, 93 insertions(+), 20 deletions(-)

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[SeaBIOS] [PATCH v3 0/2] Fix reset issue with QEMU -machine q35

Posted by Volker Rümelin 2 years ago

This reset issue was reported on the QEMU issue tracker at
https://gitlab.com/qemu-project/qemu/-/issues/766

A reset with QEMU -machine q35 -accel tcg leads to a reset loop
and with -machine q35 -accel kvm the reset only works because
KVM ignores the read-only semantics of the C-F segments.

Details about the issue are in "reset: force standard PCI
configuration access".

v2:
The commit message of patch "reset: force standard PCI config-
uration access" now uses the correct PCI configuration register
name PCIEXBAR.

v3:
Removes the unnecessary pci_disable_mmconfig() function calls
and the function itself. [Kevin]

Volker Rümelin (2):
   pci: refactor the pci_config_*() functions
   reset: force standard PCI configuration access

  src/fw/shadow.c | 14 ++++-----
  src/hw/pci.c    | 81 +++++++++++++++++++++++++++++++++++++++++--------
  src/hw/pci.h    | 18 ++++++++++-
  3 files changed, 93 insertions(+), 20 deletions(-)

-- 
2.34.1
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