[v2] hw/pflash: implement update buffer for block writes

[PATCH v2 0/2] hw/pflash: implement update buffer for block writes

Philippe Mathieu-Daudé posted 2 patches 10 months, 3 weeks ago

Diff against v1 v2
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git fetch https://github.com/patchew-project/qemu tags/patchew/20240108125342.48298-1-philmd@linaro.org

Maintainers: "Philippe Mathieu-Daudé" <philmd@linaro.org>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>

There is a newer version of this series

hw/block/pflash_cfi01.c | 165 +++++++++++++++++++++-------------------
1 file changed, 86 insertions(+), 79 deletions(-)

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[PATCH v2 0/2] hw/pflash: implement update buffer for block writes

Posted by Philippe Mathieu-Daudé 10 months, 3 weeks ago

Respin of Gerd's series [*] using the LD/ST API.

v1 [*] cover:

  When running qemu with edk2 efi firmware on aarch64 the efi
  variable store in pflash can get corrupted.  qemu not doing
  proper block writes -- flush all or nothing to storage -- is
  a hot candidate for being the root cause.

  This little series tries to fix that with an update buffer
  where block writes are staged, so we can commit or discard
  the changes when the block write is completed or canceled.

[*] https://lore.kernel.org/qemu-devel/20240105135855.268064-1-kraxel@redhat.com/

Gerd Hoffmann (1):
  hw/pflash: implement update buffer for block writes

Philippe Mathieu-Daudé (1):
  hw/block/pflash_cfi01: Use the LD/ST API in pflash_data_read/write

 hw/block/pflash_cfi01.c | 165 +++++++++++++++++++++-------------------
 1 file changed, 86 insertions(+), 79 deletions(-)

-- 
2.41.0