Re: [PATCH v9 2/2] s390: virtio: PV needs VIRTIO I/O device protection
From: Cornelia Huck <cohuck@redhat.com>
Date: 2020-08-21 12:05:42
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kvm, linux-s390, lkml
On Wed, 19 Aug 2020 18:23:18 +0200 Pierre Morel [off-list ref] wrote:
If protected virtualization is active on s390, VIRTIO has retricted
s/retricted/only restricted/
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, preventing a host error on access attempt. Signed-off-by: Pierre Morel <redacted> --- arch/s390/Kconfig | 1 + arch/s390/mm/init.c | 11 +++++++++++ 2 files changed, 12 insertions(+)
(...)
quoted hunk ↗ jump to hunk
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 6dc7c3b60ef6..8febd73ed6ca 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c@@ -45,6 +45,7 @@ #include <asm/kasan.h> #include <asm/dma-mapping.h> #include <asm/uv.h> +#include <linux/virtio_config.h>
I don't think you need this include anymore.
pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir);
(...) With the nit fixed, Reviewed-by: Cornelia Huck <cohuck@redhat.com> _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization