This series aims to clarify the behavior of
KVM_GET_EMULATED_CPUID and KVM_GET_SUPPORTED
ioctls, and fix a corner case where the nent field of the
struct kvm_cpuid2 is matching the amount of 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 provide a selftest to check KVM_GET_EMULATED_CPUID
accordingly.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@xxxxxxxxxx>
---
v2:
- better fix in cpuid.c, perform the nent check after the switch statement
- fix bug in get_emulated_cpuid.c selftest, each entry needs to have at least
the padding zeroed otherwise it fails.
Emanuele Giuseppe Esposito (4):
kvm: cpuid: adjust the returned nent field of kvm_cpuid2 for
KVM_GET_SUPPORTED_CPUID and KVM_GET_EMULATED_CPUID
Documentation: kvm: update KVM_GET_EMULATED_CPUID ioctl description
selftests: add kvm_get_emulated_cpuid
selftests: kvm: add get_emulated_cpuid test
Documentation/virt/kvm/api.rst | 10 +-
arch/x86/kvm/cpuid.c | 35 ++--
tools/testing/selftests/kvm/.gitignore | 1 +
tools/testing/selftests/kvm/Makefile | 1 +
.../selftests/kvm/include/x86_64/processor.h | 1 +
.../selftests/kvm/lib/x86_64/processor.c | 33 +++
.../selftests/kvm/x86_64/get_emulated_cpuid.c | 198 ++++++++++++++++++
7 files changed, 256 insertions(+), 23 deletions(-)
create mode 100644 tools/testing/selftests/kvm/x86_64/get_emulated_cpuid.c
--
2.30.2
