We can't just map any randome page we get when memory encryption is active.
Signed-off-by: Christian König <[email protected]> --- drivers/gpu/drm/drm_memory.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c index 8dbcdc77f6bf..132fef8ff1b6 100644 --- a/drivers/gpu/drm/drm_memory.c +++ b/drivers/gpu/drm/drm_memory.c @@ -168,6 +168,13 @@ bool drm_need_swiotlb(int dma_bits) if (xen_pv_domain()) return true; + /* + * Enforce dma_alloc_coherent when memory encryption is active as well + * for the same reasons as for Xen paravirtual hosts. + */ + if (mem_encrypt_active()) + return true; + for (tmp = iomem_resource.child; tmp; tmp = tmp->sibling) { max_iomem = max(max_iomem, tmp->end); } -- 2.17.1 _______________________________________________ dri-devel mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/dri-devel
