This series aims to clarify the behavior of the KVM_GET_EMULATED_CPUID ioctl, and fix a corner case where -E2BIG is returned when the nent field of struct kvm_cpuid2 is matching the amount of emulated entries that kvm returns.
Patch 1 proposes the nent field fix to cpuid.c, patch 2 updates the ioctl documentation accordingly and patches 3 and 4 extend the x86_64/get_cpuid_test.c selftest to check the intended behavior of KVM_GET_EMULATED_CPUID.
Signed-off-by: Emanuele Giuseppe Esposito eesposit@redhat.com --- v4: - Address nitpicks given in the mailing list
Emanuele Giuseppe Esposito (4): KVM: x86: Fix a spurious -E2BIG in KVM_GET_EMULATED_CPUID Documentation: KVM: update KVM_GET_EMULATED_CPUID ioctl description selftests: add kvm_get_emulated_cpuid to processor.h selftests: KVM: extend get_cpuid_test to include KVM_GET_EMULATED_CPUID
Documentation/virt/kvm/api.rst | 10 +-- arch/x86/kvm/cpuid.c | 33 ++++--- .../selftests/kvm/include/x86_64/processor.h | 1 + .../selftests/kvm/lib/x86_64/processor.c | 33 +++++++ .../selftests/kvm/x86_64/get_cpuid_test.c | 90 ++++++++++++++++++- 5 files changed, 142 insertions(+), 25 deletions(-)