From: Brijesh Singh <[email protected]>
When SEV-SNP is enabled globally, the hardware places restrictions on all
memory accesses based on the RMP entry, whether the hypervisor or a VM,
performs the accesses. When hardware encounters an RMP access violation
during a guest access, it will cause a #VMEXIT(NPF) with a number of
additional bits set to indicate the reasons for the #NPF. Define those
here.
See APM2 section 16.36.10 for more details.
Signed-off-by: Brijesh Singh <[email protected]>
Signed-off-by: Ashish Kalra <[email protected]>
[mdr: add some additional details to commit message]
Signed-off-by: Michael Roth <[email protected]>
---
arch/x86/include/asm/kvm_host.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index e38cab5dccae..843695217b4b 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -262,9 +262,13 @@ enum x86_intercept_stage;
#define PFERR_FETCH_BIT 4
#define PFERR_PK_BIT 5
#define PFERR_SGX_BIT 15
+#define PFERR_GUEST_RMP_BIT 31
#define PFERR_GUEST_FINAL_BIT 32
#define PFERR_GUEST_PAGE_BIT 33
#define PFERR_IMPLICIT_ACCESS_BIT 48
+#define PFERR_GUEST_ENC_BIT 34
+#define PFERR_GUEST_SIZEM_BIT 35
+#define PFERR_GUEST_VMPL_BIT 36
#define PFERR_PRESENT_MASK BIT(PFERR_PRESENT_BIT)
#define PFERR_WRITE_MASK BIT(PFERR_WRITE_BIT)
@@ -276,6 +280,10 @@ enum x86_intercept_stage;
#define PFERR_GUEST_FINAL_MASK BIT_ULL(PFERR_GUEST_FINAL_BIT)
#define PFERR_GUEST_PAGE_MASK BIT_ULL(PFERR_GUEST_PAGE_BIT)
#define PFERR_IMPLICIT_ACCESS BIT_ULL(PFERR_IMPLICIT_ACCESS_BIT)
+#define PFERR_GUEST_RMP_MASK BIT_ULL(PFERR_GUEST_RMP_BIT)
+#define PFERR_GUEST_ENC_MASK BIT_ULL(PFERR_GUEST_ENC_BIT)
+#define PFERR_GUEST_SIZEM_MASK BIT_ULL(PFERR_GUEST_SIZEM_BIT)
+#define PFERR_GUEST_VMPL_MASK BIT_ULL(PFERR_GUEST_VMPL_BIT)
#define PFERR_NESTED_GUEST_PAGE (PFERR_GUEST_PAGE_MASK | \
PFERR_WRITE_MASK | \
--
2.25.1