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| author | Pierre Morel <pmorel@linux.ibm.com> | 2020-09-10 10:53:50 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-10-21 16:34:13 +0200 |
| commit | 4ce1cf7b02ed691acf0d9c664579cb6e52b1687b (patch) | |
| tree | e920d4aec7686b2a3af4e521600a8c51b2ab6995 /arch/s390/Kconfig | |
| parent | virtio: let arch advertise guest's memory access restrictions (diff) | |
| download | linux-4ce1cf7b02ed691acf0d9c664579cb6e52b1687b.tar.xz linux-4ce1cf7b02ed691acf0d9c664579cb6e52b1687b.zip | |
s390: virtio: PV needs VIRTIO I/O device protection
If protected virtualization is active on s390, VIRTIO has only retricted
access to the guest memory.
Define CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS and export
arch_has_restricted_virtio_memory_access to advertize VIRTIO if that's
the case.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Link: https://lore.kernel.org/r/1599728030-17085-3-git-send-email-pmorel@linux.ibm.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index b29fcc66ec39..938246200d39 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -820,6 +820,7 @@ menu "Virtualization" config PROTECTED_VIRTUALIZATION_GUEST def_bool n prompt "Protected virtualization guest support" + select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS help Select this option, if you want to be able to run this kernel as a protected virtualization KVM guest. |