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a603002eea
linux/drivers/virtio
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Juergen Gross a603002eea virtio: replace restricted mem access flag with callback 
Instead of having a global flag to require restricted memory access
for all virtio devices, introduce a callback which can select that
requirement on a per-device basis.

For convenience add a common function returning always true, which can
be used for use cases like SEV.

Per default use a callback always returning false.

As the callback needs to be set in early init code already, add a
virtio anchor which is builtin in case virtio is enabled.

Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 guest using Xen
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20220622063838.8854-2-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2022-08-01 07:42:49 +02:00
..
Kconfig virtio: replace restricted mem access flag with callback 2022-08-01 07:42:49 +02:00
Makefile virtio: replace restricted mem access flag with callback 2022-08-01 07:42:49 +02:00
virtio_anchor.c virtio: replace restricted mem access flag with callback 2022-08-01 07:42:49 +02:00
virtio_balloon.c virtio: Replace unsigned with unsigned int 2022-05-31 12:45:09 -04:00
virtio_dma_buf.c dma-buf: move dma-buf symbols into the DMA_BUF module namespace 2021-10-25 14:53:08 +02:00
virtio_input.c virtio: wrap config->reset calls 2022-01-14 18:50:52 -05:00
virtio_mem.c drivers: virtio_mem: use pageblock size as the minimum virtio_mem size. 2022-05-13 07:20:13 -07:00
virtio_mmio.c virtio_mmio: Restore guest page size on resume 2022-06-27 08:05:35 -04:00
virtio_pci_common.c virtio: Replace unsigned with unsigned int 2022-05-31 12:45:09 -04:00
virtio_pci_common.h virtio: Replace unsigned with unsigned int 2022-05-31 12:45:09 -04:00
virtio_pci_legacy_dev.c virtio/virtio_pci_legacy_dev: ensure the correct return value 2022-01-14 18:50:53 -05:00
virtio_pci_legacy.c virtio-pci: implement synchronize_cbs() 2022-05-31 12:45:09 -04:00
virtio_pci_modern_dev.c virtio: Remove unnecessary variable assignments 2022-06-24 02:49:48 -04:00
virtio_pci_modern.c virtio-pci: implement synchronize_cbs() 2022-05-31 12:45:09 -04:00
virtio_ring.c virtio_ring: make vring_create_virtqueue_split prettier 2022-06-27 08:05:35 -04:00
virtio_vdpa.c virtio: Replace unsigned with unsigned int 2022-05-31 12:45:09 -04:00
virtio.c virtio: replace restricted mem access flag with callback 2022-08-01 07:42:49 +02:00