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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 11:51:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-31 11:51:05 -0700
commitd9d76778927dc953c553b83ab52287dfbd15ac6a (patch)
treec37938c2f3834b72fc7d1ee790774d5d82054986 /kernel
parent7cc7e93519278401fcd9dce599296afb47e1f6ea (diff)
parentaa61ee7b9ee3cb84c0d3a842b0d17937bf024c46 (diff)
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar: "A handful of changes: - two memory encryption related fixes - don't display the kernel's virtual memory layout plaintext on 32-bit kernels either - two simplifications" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Remove the now redundant N_MEMORY check dma-mapping: Fix dma_pgprot() for unencrypted coherent pages x86: Don't let pgprot_modify() change the page encryption bit x86/mm/kmmio: Use this_cpu_ptr() instead get_cpu_var() for kmmio_ctx x86/mm/init/32: Stop printing the virtual memory layout
Diffstat (limited to 'kernel')
-rw-r--r--kernel/dma/mapping.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
index 12ff766ec1fa..98e3d873792e 100644
--- a/kernel/dma/mapping.c
+++ b/kernel/dma/mapping.c
@@ -154,6 +154,8 @@ EXPORT_SYMBOL(dma_get_sgtable_attrs);
*/
pgprot_t dma_pgprot(struct device *dev, pgprot_t prot, unsigned long attrs)
{
+ if (force_dma_unencrypted(dev))
+ prot = pgprot_decrypted(prot);
if (dev_is_dma_coherent(dev) ||
(IS_ENABLED(CONFIG_DMA_NONCOHERENT_CACHE_SYNC) &&
(attrs & DMA_ATTR_NON_CONSISTENT)))