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path: root/tools/testing/selftests/kvm/include/x86/svm_util.h
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2026-01-08KVM: selftests: Add support for nested NPTsYosry Ahmed
Implement nCR3 and NPT initialization functions, similar to the EPT equivalents, and create common TDP helpers for enablement checking and initialization. Enable NPT for nested guests by default if the TDP MMU was initialized, similar to VMX. Reuse the PTE masks from the main MMU in the NPT MMU, except for the C and S bits related to confidential VMs. Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev> Link: https://patch.msgid.link/20251230230150.4150236-17-seanjc@google.com [sean: apply Yosry's fixup for ncr3_gpa] Signed-off-by: Sean Christopherson <seanjc@google.com>
2024-12-18KVM: selftests: Use canonical $(ARCH) paths for KVM selftests directoriesSean Christopherson
Use the kernel's canonical $(ARCH) paths instead of the raw target triple for KVM selftests directories. KVM selftests are quite nearly the only place in the entire kernel that using the target triple for directories, tools/testing/selftests/drivers/s390x being the lone holdout. Using the kernel's preferred nomenclature eliminates the minor, but annoying, friction of having to translate to KVM's selftests directories, e.g. for pattern matching, opening files, running selftests, etc. Opportunsitically delete file comments that reference the full path of the file, as they are obviously prone to becoming stale, and serve no known purpose. Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20241128005547.4077116-16-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>