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| author | Juergen Gross <jgross@suse.com> | 2022-06-02 22:23:49 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-06-06 17:07:30 +0300 |
| commit | fa1f57421e0b1c57843902c89728f823abc32f02 (patch) | |
| tree | a7cfcba922c86058156d997e07180b269b321c34 /drivers/xen | |
| parent | d6aca3504c7ded5f4f46957e3685b9344d9743dd (diff) | |
| download | linux-fa1f57421e0b1c57843902c89728f823abc32f02.tar.xz | |
xen/virtio: Enable restricted memory access using Xen grant mappings
In order to support virtio in Xen guests add a config option XEN_VIRTIO
enabling the user to specify whether in all Xen guests virtio should
be able to access memory via Xen grant mappings only on the host side.
Also set PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS feature from the guest
initialization code on Arm and x86 if CONFIG_XEN_VIRTIO is enabled.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/1654197833-25362-5-git-send-email-olekstysh@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/xen')
| -rw-r--r-- | drivers/xen/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 313a9127fd5c..a7bd8ce7a1d2 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -339,4 +339,15 @@ config XEN_GRANT_DMA_OPS bool select DMA_OPS +config XEN_VIRTIO + bool "Xen virtio support" + depends on VIRTIO + select XEN_GRANT_DMA_OPS + help + Enable virtio support for running as Xen guest. Depending on the + guest type this will require special support on the backend side + (qemu or kernel, depending on the virtio device types used). + + If in doubt, say n. + endmenu |