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Message-Id: <20210408114303.30310-1-eesposit@redhat.com>
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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