[PATCH v2 0/5] KVM: x86: small MMU-adjacent cleanups

From: Paolo Bonzini

Date: Sat May 30 2026 - 13:00:20 EST


The non-MMU changes/preliminary cleanups from my "separate kvm_mmu"
series; fixed, test, and extracted for inclusion in 7.2. The rest of
the series can be included later.

The meat here is in patches 2 and 3, which prepare for having a single
copy of the PDPTRs (in vcpu->arch) instead of two (in root_mmu and
nested_mmu). This is then done in the last patch.

I have redone the nVMX patch now that Sean pointed out that the duplicate
write was a rebase goof. I kept the nSVM one as is though.

v1->v2:
- rewritten "KVM: nVMX: remove unnecessary code in prepare_vmcs02_rare"
- added "KVM: x86/mmu: move pdptrs out of the MMU"

Thanks,

Paolo

Paolo Bonzini (5):
KVM: x86: remove nested_mmu from mmu_is_nested()
KVM: nVMX: remove unnecessary code in prepare_vmcs02_rare
KVM: nSVM: invalidate cached PDPTRs across nested NPT transitions
KVM: x86: check that kvm_handle_invpcid is only invoked with shadow
paging
KVM: x86/mmu: move pdptrs out of the MMU

arch/x86/include/asm/kvm_host.h | 5 ++---
arch/x86/kvm/kvm_cache_regs.h | 12 ++++++++++--
arch/x86/kvm/svm/nested.c | 27 ++++++++++++++++++---------
arch/x86/kvm/svm/svm.c | 2 +-
arch/x86/kvm/vmx/nested.c | 11 -----------
arch/x86/kvm/vmx/vmx.c | 20 ++++++++------------
arch/x86/kvm/x86.c | 9 ++++++---
arch/x86/kvm/x86.h | 2 +-
8 files changed, 46 insertions(+), 42 deletions(-)

--
2.52.0