kernel/linux.git/tools/testing/selftests/kvm/include/x86/processor.h, branch v7.1

KVM: selftests: Replace "paddr" with "gpa" throughout

2026-04-20T21:54:17+00:00

Replace all variations of "paddr" variables in KVM selftests with "gpa", with the exception of the ELF structures, as those fields are not specific to guest virtual addresses, to complete the conversion from vm_paddr_t to gpa_t. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-20-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Replace "u64 nested_paddr" with "gpa_t l2_gpa"

2026-04-20T21:54:17+00:00

In x86's nested TDP APIs, use the appropriate gpa_t typedef and rename variables from nested_paddr to l2_gpa to match KVM x86's nomenclature. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-19-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout

2026-04-20T21:54:17+00:00

Use gpa_t instead of u64 for obvious declarations of GPA variables. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-18-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Replace "vaddr" with "gva" throughout

2026-04-20T21:54:17+00:00

Replace all variations of "vaddr" variables in KVM selftests with "gva", with the exception of the ELF structures, as those fields are not specific to guest virtual addresses, to complete the conversion from vm_vaddr_t to gva_t. Opportunistically use gva_t instead of u64 for relevant variables, and fixup indentation as appropriate. No functional change intended. Link: https://patch.msgid.link/20260420212004.3938325-17-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u8 instead of uint8_t

2026-04-20T21:54:17+00:00

Use u8 instead of uint8_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint8_t/u8/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack Link: https://patch.msgid.link/20260420212004.3938325-11-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u16 instead of uint16_t

2026-04-20T21:54:17+00:00

Use u16 instead of uint16_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint16_t/u16/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack Link: https://patch.msgid.link/20260420212004.3938325-9-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u32 instead of uint32_t

2026-04-20T21:54:16+00:00

Use u32 instead of uint32_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint32_t/u32/g' Then by manually adjusting whitespace to make checkpatch.pl happy. No functional change intended. Signed-off-by: David Matlack Link: https://patch.msgid.link/20260420212004.3938325-7-seanjc@google.com Signed-off-by: Sean Christopherson

KVM: selftests: Use u64 instead of uint64_t

2026-04-20T21:54:16+00:00

Use u64 instead of uint64_t to make the KVM selftests code more concise and more similar to the kernel (since selftests are primarily developed by kernel developers). This commit was generated with the following command: git ls-files tools/testing/selftests/kvm | xargs sed -i 's/uint64_t/u64/g' Then by manually adjusting whitespace to make checkpatch.pl happy. Include in include/kvm_util_types.h, iinclude/test_util.h, and include/x86/pmu.h to pick up the tools-defined u64. Arguably, all headers (especially kvm_util_types.h) should have already been including stdint.h to get uint64_t from the libc headers, but the missing dependency only rears its head once KVM uses u64 instead of uint64_t. No functional change intended. Signed-off-by: David Matlack [sean: rename pread_uint64() => pread_u64, expand on types.h include] Link: https://patch.msgid.link/20260420212004.3938325-5-seanjc@google.com Signed-off-by: Sean Christopherson

Merge tag 'kvm-x86-nested-7.1' of https://github.com/kvm-x86/linux into HEAD

2026-04-13T11:01:50+00:00

KVM nested SVM changes for 7.1 (with one common x86 fix) - To minimize the probability of corrupting guest state, defer KVM's non-architectural delivery of exception payloads (e.g. CR2 and DR6) until consumption of the payload is imminent, and force delivery of the payload in all paths where userspace saves relevant state. - Use vcpu->arch.cr2 when updating vmcb12's CR2 on nested #VMEXIT to fix a bug where L2's CR2 can get corrupted after a save/restore, e.g. if the VM is migrated while L2 is faulting in memory. - Fix a class of nSVM bugs where some fields written by the CPU are not synchronized from vmcb02 to cached vmcb12 after VMRUN, and so are not up-to-date when saved by KVM_GET_NESTED_STATE. - Fix a class of bugs where the ordering between KVM_SET_NESTED_STATE and KVM_SET_{S}REGS could cause vmcb02 to be incorrectly initialized after save+restore. - Add a variety of missing nSVM consistency checks. - Fix several bugs where KVM failed to correctly update VMCB fields on nested #VMEXIT. - Fix several bugs where KVM failed to correctly synthesize #UD or #GP for SVM-related instructions. - Add support for save+restore of virtualized LBRs (on SVM). - Refactor various helpers and macros to improve clarity and (hopefully) make the code easier to maintain. - Aggressively sanitize fields when copying from vmcb12 to guard against unintentionally allowing L1 to utilize yet-to-be-defined features. - Fix several bugs where KVM botched rAX legality checks when emulating SVM instructions. Note, KVM is still flawed in that KVM doesn't address size prefix overrides for 64-bit guests; this should probably be documented as a KVM erratum. - Fail emulation of VMRUN/VMLOAD/VMSAVE if mapping vmcb12 fails instead of somewhat arbitrarily synthesizing #GP (i.e. don't bastardize AMD's already- sketchy behavior of generating #GP if for "unsupported" addresses). - Cache all used vmcb12 fields to further harden against TOCTOU bugs.

Merge tag 'kvm-x86-selftests-7.1' of https://github.com/kvm-x86/linux into HEAD

2026-04-13T09:53:46+00:00

KVM selftests changes for 7.1 - Add support for Hygon CPUs in KVM selftests. - Fix a bug in the MSR test where it would get false failures on AMD/Hygon CPUs with exactly one of RDPID or RDTSCP. - Add an MADV_COLLAPSE testcase for guest_memfd as a regression test for a bug where the kernel would attempt to collapse guest_memfd folios against KVM's will.