diff options
| author | David Rientjes <rientjes@google.com> | 2020-04-14 17:05:01 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-04-25 13:17:06 +0200 |
| commit | 82fef0ad811fb5976cf36ccc3d2c3bc0195dfb72 (patch) | |
| tree | e556917bab652a1dcca680d1dc1e19d3250b2c1d | |
| parent | 2edc5bb3c5cc42131438460a50b7b16905c81c2a (diff) | |
x86/mm: unencrypted non-blocking DMA allocations use coherent pools
When CONFIG_AMD_MEM_ENCRYPT is enabled and a device requires unencrypted
DMA, all non-blocking allocations must originate from the atomic DMA
coherent pools.
Select CONFIG_DMA_COHERENT_POOL for CONFIG_AMD_MEM_ENCRYPT.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | arch/x86/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d6104ea8af0..2bf2222819d3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1520,6 +1520,7 @@ config X86_CPA_STATISTICS config AMD_MEM_ENCRYPT bool "AMD Secure Memory Encryption (SME) support" depends on X86_64 && CPU_SUP_AMD + select DMA_COHERENT_POOL select DYNAMIC_PHYSICAL_MASK select ARCH_USE_MEMREMAP_PROT select ARCH_HAS_FORCE_DMA_UNENCRYPTED |