diff options
| author | Stephan Gerhold <[email protected]> | 2022-06-21 13:06:21 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <[email protected]> | 2022-06-27 08:05:35 -0400 |
| commit | e0c2ce8217955537dd5434baeba061f209797119 (patch) | |
| tree | 75700d630ab72f1f21ef3f97f8e0fe5de56e5660 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | ed7ac37fde33ccd84e4bd2b9363c191f925364c7 (diff) | |
virtio_mmio: Restore guest page size on resume
Virtio devices might lose their state when the VMM is restarted
after a suspend to disk (hibernation) cycle. This means that the
guest page size register must be restored for the virtio_mmio legacy
interface, since otherwise the virtio queues are not functional.
This is particularly problematic for QEMU that currently still defaults
to using the legacy interface for virtio_mmio. Write the guest page
size register again in virtio_mmio_restore() to make legacy virtio_mmio
devices work correctly after hibernation.
Signed-off-by: Stephan Gerhold <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions