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Diffstat (limited to 'arch/x86/mm/mem_encrypt.c')
-rw-r--r--arch/x86/mm/mem_encrypt.c62
1 files changed, 39 insertions, 23 deletions
diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c
index c290c55b63..0a120d85d7 100644
--- a/arch/x86/mm/mem_encrypt.c
+++ b/arch/x86/mm/mem_encrypt.c
@@ -14,6 +14,8 @@
#include <linux/mem_encrypt.h>
#include <linux/virtio_anchor.h>
+#include <asm/sev.h>
+
/* Override for DMA direct allocation check - ARCH_HAS_FORCE_DMA_UNENCRYPTED */
bool force_dma_unencrypted(struct device *dev)
{
@@ -42,38 +44,45 @@ bool force_dma_unencrypted(struct device *dev)
static void print_mem_encrypt_feature_info(void)
{
- pr_info("Memory Encryption Features active:");
-
- if (cpu_feature_enabled(X86_FEATURE_TDX_GUEST)) {
- pr_cont(" Intel TDX\n");
- return;
- }
+ pr_info("Memory Encryption Features active: ");
- pr_cont(" AMD");
+ switch (cc_vendor) {
+ case CC_VENDOR_INTEL:
+ pr_cont("Intel TDX\n");
+ break;
+ case CC_VENDOR_AMD:
+ pr_cont("AMD");
- /* Secure Memory Encryption */
- if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT)) {
+ /* Secure Memory Encryption */
+ if (cc_platform_has(CC_ATTR_HOST_MEM_ENCRYPT)) {
/*
* SME is mutually exclusive with any of the SEV
* features below.
- */
- pr_cont(" SME\n");
- return;
- }
+ */
+ pr_cont(" SME\n");
+ return;
+ }
- /* Secure Encrypted Virtualization */
- if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
- pr_cont(" SEV");
+ /* Secure Encrypted Virtualization */
+ if (cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
+ pr_cont(" SEV");
+
+ /* Encrypted Register State */
+ if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT))
+ pr_cont(" SEV-ES");
- /* Encrypted Register State */
- if (cc_platform_has(CC_ATTR_GUEST_STATE_ENCRYPT))
- pr_cont(" SEV-ES");
+ /* Secure Nested Paging */
+ if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP))
+ pr_cont(" SEV-SNP");
- /* Secure Nested Paging */
- if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP))
- pr_cont(" SEV-SNP");
+ pr_cont("\n");
- pr_cont("\n");
+ sev_show_status();
+
+ break;
+ default:
+ pr_cont("Unknown\n");
+ }
}
/* Architecture __weak replacement functions */
@@ -93,6 +102,13 @@ void __init mem_encrypt_setup_arch(void)
phys_addr_t total_mem = memblock_phys_mem_size();
unsigned long size;
+ /*
+ * Do RMP table fixups after the e820 tables have been setup by
+ * e820__memory_setup().
+ */
+ if (cc_platform_has(CC_ATTR_HOST_SEV_SNP))
+ snp_fixup_e820_tables();
+
if (!cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT))
return;