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Date: Thu, 8 Apr 2021 13:42:59 +0200 From: Emanuele Giuseppe Esposito <eesposit@...hat.com> To: kvm@...r.kernel.org Cc: Paolo Bonzini <pbonzini@...hat.com>, Jonathan Corbet <corbet@....net>, Sean Christopherson <seanjc@...gle.com>, Vitaly Kuznetsov <vkuznets@...hat.com>, Emanuele Giuseppe Esposito <eesposit@...hat.com>, Jim Mattson <jmattson@...gle.com>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>, Shuah Khan <shuah@...nel.org>, Alexander Graf <graf@...zon.com>, Andrew Jones <drjones@...hat.com>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org Subject: [PATCH v4 0/4] KVM: cpuid: fix KVM_GET_EMULATED_CPUID implementation 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@...hat.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(-) -- 2.30.2
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