From: David Rientjes rientjes@google.com
upstream 82fef0ad811fb5976cf36ccc3d2c3bc0195dfb72 commit.
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 Signed-off-by: Peter Gonda pgonda@google.com --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8ef85139553f..be8746e9d864 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1530,6 +1530,7 @@ 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