korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 12:28:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

x86/mm: unencrypted non-blocking DMA allocations use coherent pools

Browse Source 
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>
This commit is contained in:
David Rientjes 2020-04-14 17:05:01 -07:00 committed by Christoph Hellwig
parent 2edc5bb3c5
commit 82fef0ad81
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/x86/Kconfig
View File

@ -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