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 <[email protected]> --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 8d078642b4be..b7c9e78a5374 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 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
