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authorJuergen Gross <jgross@suse.com>2022-06-22 09:38:36 +0300
committerJuergen Gross <jgross@suse.com>2022-08-01 08:42:49 +0300
commita603002eea8213eec5211be5a85db8340aea06d0 (patch)
tree5154e240ad4f487a866e74a055671d66b8b12b6d /include/xen/xen.h
parent8441dac05e7f346abc4f63a15d4af0adeabfaa9b (diff)
downloadlinux-a603002eea8213eec5211be5a85db8340aea06d0.tar.xz
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>
Diffstat (limited to 'include/xen/xen.h')
-rw-r--r--include/xen/xen.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/xen/xen.h b/include/xen/xen.h
index 0780a81e140d..ac5a144c6a65 100644
--- a/include/xen/xen.h
+++ b/include/xen/xen.h
@@ -52,12 +52,12 @@ bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
extern u64 xen_saved_max_mem_size;
#endif
-#include <linux/platform-feature.h>
+#include <linux/virtio_anchor.h>
static inline void xen_set_restricted_virtio_memory_access(void)
{
if (IS_ENABLED(CONFIG_XEN_VIRTIO) && xen_domain())
- platform_set(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS);
+ virtio_set_mem_acc_cb(virtio_require_restricted_mem_acc);
}
#ifdef CONFIG_XEN_UNPOPULATED_ALLOC