Stephan Gerhold 93135dca8c virtio_mmio: Restore guest page size on resume ...

[ Upstream commit e0c2ce8217 ]

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 <stephan.gerhold@kernkonzept.com>
Message-Id: <20220621110621.3638025-3-stephan.gerhold@kernkonzept.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-07-21 21:20:13 +02:00

..

Kconfig

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Makefile

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virtio_balloon.c

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virtio_dma_buf.c

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virtio_input.c

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virtio_mem.c

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virtio_mmio.c

virtio_mmio: Restore guest page size on resume

2022-07-21 21:20:13 +02:00

virtio_pci_common.c

virtio-pci: Remove wrong address verification in vp_del_vqs()

2022-06-22 14:13:20 +02:00

virtio_pci_common.h

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virtio_pci_legacy.c

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virtio_pci_modern.c

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virtio_ring.c

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virtio_vdpa.c

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virtio.c

virtio: acknowledge all features before access

2022-03-16 14:16:02 +01:00