On 2020-08-21 14:05, Cornelia Huck wrote:
On Wed, 19 Aug 2020 18:23:18 +0200
Pierre Morel <pmorel@xxxxxxxxxxxxx> 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 <pmorel@xxxxxxxxxxxxx>
---
arch/s390/Kconfig | 1 +
arch/s390/mm/init.c | 11 +++++++++++
2 files changed, 12 insertions(+)
(...)
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.
right,
pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir);
(...)
With the nit fixed,
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Thanks,
Pierre
--
Pierre Morel
IBM Lab Boeblingen
