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| author | Xiang Zheng <zhengxiang9@huawei.com> | 2022-12-20 09:42:46 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-01-24 18:26:41 +0100 |
| commit | a4b15a8b9ef25b44fa92a4825312622600c1f37c (patch) | |
| tree | 1b47940e0215ec3c6d9ac9d0b7c53e943038bc9b /include/qemu/osdep.h | |
| parent | 95988739c73f76176327061824c603f85b072ff2 (diff) | |
| download | focaccia-qemu-a4b15a8b9ef25b44fa92a4825312622600c1f37c.tar.gz focaccia-qemu-a4b15a8b9ef25b44fa92a4825312622600c1f37c.zip | |
pflash: Only read non-zero parts of backend image
Currently we fill the VIRT_FLASH memory space with two 64MB NOR images when using persistent UEFI variables on virt board. Actually we only use a very small(non-zero) part of the memory while the rest significant large(zero) part of memory is wasted. So this patch checks the block status and only writes the non-zero part into memory. This requires pflash devices to use sparse files for backends. Signed-off-by: Xiang Zheng <zhengxiang9@huawei.com> [ kraxel: rebased to latest master ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Message-Id: <20221220084246.1984871-1-kraxel@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/qemu/osdep.h')
0 files changed, 0 insertions, 0 deletions