For now, disable the AMD IOMMU if memory encryption is active. A future patch will re-enable the function with full memory encryption support. Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx> --- drivers/iommu/amd_iommu_init.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 59741ea..136a24e 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -27,6 +27,7 @@ #include <linux/amd-iommu.h> #include <linux/export.h> #include <linux/iommu.h> +#include <linux/mem_encrypt.h> #include <asm/pci-direct.h> #include <asm/iommu.h> #include <asm/gart.h> @@ -2388,6 +2389,10 @@ int __init amd_iommu_detect(void) if (amd_iommu_disabled) return -ENODEV; + /* For now, disable the IOMMU if SME is active */ + if (sme_me_mask) + return -ENODEV; + ret = iommu_go_to_state(IOMMU_IVRS_DETECTED); if (ret) return ret; -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
