KVM SVM changes for 6.19:

- Fix a few missing "VMCB dirty" bugs. - Fix the worst of KVM's lack of EFER.LMSLE emulation. - Add AVIC support for addressing 4k vCPUs in x2AVIC mode. - Fix incorrect handling of selective CR0 writes when checking intercepts during emulation of L2 instructions. - Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32] on VMRUN and #VMEXIT. - Fix a bug where KVM corrupt the guest code stream when re-injecting a soft interrupt if the guest patched the underlying code after the VM-Exit, e.g. when Linux patches code with a temporary INT3. - Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits to userspace, and extend KVM "support" to all policy bits that don't require any actual support from KVM. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAmkmVFgACgkQOlYIJqCj N/3GVA/+ITWLRuY28kGmpDBflp6EyMIDlBe4v+JRFV5Ll/6kq+sYWZTIE8uiDHNP E6dbrAnU3xxF2fK5pb3Fq0kKslu/+UTnldt3VN0uGzHlTqvw9itKaCdFnOBMND4Z Fs7SbXUd1ZWz5Z/Uq2niJDd3p1YA69i1At+udXterFVKzl3GSmNMvsXhNPjjF3gL +purCkHfWLnXhFJYMYgnaWDJUQldR+YfulWwEd2y4qXyfoqOBJhg7DpKuHlewBVT 2ice4k4nBu47rNl+ZRFM9sFX0959OX8MxykO902UB4+qS39jFzTlyM+LjnxKmCfC dzGTh4lhG/1QQme6TYBQ+OgXMj6H+8KqQ+YNbjxjAEgY8hWDdVK0bZMIq/iS16aQ VPSf1/GufdvV+dUyyb2DZzf7NhWmKyVGjlN5PnGQQl0x6+LwI5m3EODDLfTHlmlb 0UEZkXdN74ghT2ExepVyVKeDtbQPJNFN/voBnYr8n0P+9Jf28QuoWD5bTloJIxIJ OwjwJq3HbDduq/RCFbiSERMBPYFxYCkxVlt+TI+ONhNCUNfvxefNfftHIx+6Yk73 IV5g3gWNWkIo4h1yp8zsglwiTStY4qpiR52YlDLN3+btgYcPOAXt/U4nigaomfdR NoYbuqD1N+u1P4Vlnr8uUZExQVY+JoIPrB3zPnITni+aucSpp+c= =p1kg -----END PGP SIGNATURE----- Merge tag 'kvm-x86-svm-6.19' of https://github.com/kvm-x86/linux into HEAD KVM SVM changes for 6.19: - Fix a few missing "VMCB dirty" bugs. - Fix the worst of KVM's lack of EFER.LMSLE emulation. - Add AVIC support for addressing 4k vCPUs in x2AVIC mode. - Fix incorrect handling of selective CR0 writes when checking intercepts during emulation of L2 instructions. - Fix a currently-benign bug where KVM would clobber SPEC_CTRL[63:32] on VMRUN and #VMEXIT. - Fix a bug where KVM corrupt the guest code stream when re-injecting a soft interrupt if the guest patched the underlying code after the VM-Exit, e.g. when Linux patches code with a temporary INT3. - Add KVM_X86_SNP_POLICY_BITS to advertise supported SNP policy bits to userspace, and extend KVM "support" to all policy bits that don't require any actual support from KVM.
2026-10-22 19:14:51 +00:00 · 2025-11-26 09:46:45 +01:00 · 2025-11-26 09:46:45 +01:00 · 679fcce002
commit 679fcce002
parent d1e7b4613e 275d6d1189
16 changed files with 310 additions and 85 deletions
--- a/Documentation/virt/kvm/x86/errata.rst
+++ b/Documentation/virt/kvm/x86/errata.rst
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
--- a/arch/x86/include/asm/svm.h
+++ b/arch/x86/include/asm/svm.h
--- a/arch/x86/include/uapi/asm/kvm.h
+++ b/arch/x86/include/uapi/asm/kvm.h
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
--- a/arch/x86/kvm/svm/avic.c
+++ b/arch/x86/kvm/svm/avic.c
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
--- a/arch/x86/kvm/svm/vmenter.S
+++ b/arch/x86/kvm/svm/vmenter.S
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
--- a/include/linux/psp-sev.h
+++ b/include/linux/psp-sev.h