Two fixes for 5-level paging bugs with a 100% fatality rate, a patch to
enable 5-level EPT in L1, and additional clean up on top (mostly renames
of functions/variables that caused me no end of confusion when trying to
figure out what was broken).
Tested fixed kernels at L0, L1 and L2, with most combinations of EPT,
shadow paging, 4-level and 5-level. EPT kvm-unit-tests runs clean in L0.
Patches for kvm-unit-tests incoming to play nice with 5-level nested EPT.
Ideally patches 1 and 2 would get into 5.6, 5-level paging is quite
broken without them.
v2:
- Increase the nested EPT array sizes to accomodate 5-level paging in
the patch that adds support for 5-level nested EPT, not in the bug
fix for 5-level shadow paging.
Sean Christopherson (7):
KVM: nVMX: Use correct root level for nested EPT shadow page tables
KVM: x86/mmu: Fix struct guest_walker arrays for 5-level paging
KVM: nVMX: Allow L1 to use 5-level page walks for nested EPT
KVM: nVMX: Rename nested_ept_get_cr3() to nested_ept_get_eptp()
KVM: nVMX: Rename EPTP validity helper and associated variables
KVM: x86/mmu: Rename kvm_mmu->get_cr3() to ->get_guest_cr3_or_eptp()
KVM: nVMX: Drop unnecessary check on ept caps for execute-only
arch/x86/include/asm/kvm_host.h | 2 +-
arch/x86/include/asm/vmx.h | 12 +++++++
arch/x86/kvm/mmu/mmu.c | 35 ++++++++++----------
arch/x86/kvm/mmu/paging_tmpl.h | 6 ++--
arch/x86/kvm/svm.c | 10 +++---
arch/x86/kvm/vmx/nested.c | 58 ++++++++++++++++++++-------------
arch/x86/kvm/vmx/nested.h | 4 +--
arch/x86/kvm/vmx/vmx.c | 2 ++
arch/x86/kvm/x86.c | 2 +-
9 files changed, 79 insertions(+), 52 deletions(-)
--
2.24.1
