[v1] hw/pflash: implement update buffer for block writes

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

Gerd Hoffmann posted 2 patches 10 months, 3 weeks ago

Diff against v2 v2
Download series mbox

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20240105135855.268064-1-kraxel@redhat.com

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There is a newer version of this series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 | 132 ++++++++++++++++++++++++++++------------
1 file changed, 93 insertions(+), 39 deletions(-)

Expand all Fold all

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

Posted by Gerd Hoffmann 10 months, 3 weeks ago

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.

Gerd Hoffmann (2):
  hw/pflash: refactor pflash_data_write()
  hw/pflash: implement update buffer for block writes

 hw/block/pflash_cfi01.c | 132 ++++++++++++++++++++++++++++------------
 1 file changed, 93 insertions(+), 39 deletions(-)

-- 
2.43.0