This patch set adds 5-level page table support for AMD SVM. When the 5-level page table is enabled on host OS, the nested page table for guest VMs will use the same format as host OS (i.e. 5-level NPT). These patches were tested with various combination of different settings and test cases (nested/regular VMs, AMD64/i686 kernels, kvm-unit-tests, etc.) v1->v2: * Remove v1's arch-specific get_tdp_level() and add a new parameter, tdp_forced_root_level, to allow forced TDP level (Sean) * Add additional comment on tdp_root table chaining trick and change the PML root table allocation code (Sean) * Revise Patch 1's commit msg (Sean and Jim) Thanks, -Wei Wei Huang (3): KVM: x86: Allow CPU to force vendor-specific TDP level KVM: x86: Handle the case of 5-level shadow page table KVM: SVM: Add 5-level page table support for SVM arch/x86/include/asm/kvm_host.h | 6 ++-- arch/x86/kvm/mmu/mmu.c | 58 ++++++++++++++++++++++----------- arch/x86/kvm/svm/svm.c | 13 ++++---- arch/x86/kvm/vmx/vmx.c | 3 +- 4 files changed, 50 insertions(+), 30 deletions(-) -- 2.31.1
