diff mbox series

[RFC,v9,43/51] KVM: SEV: Configure MMU to check for private fault flags

Message ID 20230612042559.375660-44-michael.roth@amd.com (mailing list archive)
State New, archived
Headers show
Series Add AMD Secure Nested Paging (SEV-SNP) Hypervisor Support | expand

Commit Message

Michael Roth June 12, 2023, 4:25 a.m. UTC 
SEV-SNP uses a #NPF flag to indicate whether the guest expects a shared
or a private page, which in turn dictates whether the KVM MMU should
map a normal page or a gmem page. Set the appropriate mask to enable
this handling for SEV-SNP guests.

Signed-off-by: Michael Roth <michael.roth@amd.com>
---
 arch/x86/kvm/svm/sev.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index ec74ff5e09c7..909ecd90d199 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -2006,6 +2006,8 @@  static int snp_launch_start(struct kvm *kvm, struct kvm_sev_cmd *argp)
 	if (rc)
 		goto e_free_context;
 
+	kvm->arch.mmu_private_fault_mask = PFERR_GUEST_ENC_MASK;
+
 	return 0;
 
 e_free_context: