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Date: Wed, 4 Mar 2020 17:34:30 -0800 From: Sean Christopherson <sean.j.christopherson@...el.com> To: Paolo Bonzini <pbonzini@...hat.com> Cc: Sean Christopherson <sean.j.christopherson@...el.com>, Vitaly Kuznetsov <vkuznets@...hat.com>, Wanpeng Li <wanpengli@...cent.com>, Jim Mattson <jmattson@...gle.com>, Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, Pu Wen <puwen@...on.cn> Subject: [PATCH v2 0/7] KVM: x86: CPUID emulation and tracing fixes Round two of trying to wrangle kvm_cpuid() into submission. Two more bug fixes, both related to querying for an "AMD" vendor, in addition to the fixes in v1 (tracing and Hypervisor/Centaur range checks). In theory, everything up to the refactoring is non-controversial, i.e. we can bikeshed the refactoring without delaying the bug fixes. v2: - Use Jan's patch to fix the trace bug. [Everyone] - Rework Hypervisor/Centaur handling so that only the Hypervisor sub-ranges get the restrictive 0xffffff00 mask, and so that Centaur's range only gets recognized when the guest vendor is Centaur. [Jim] - Add the aforementioned bug fixes. - Add a patch to do build time assertions on the vendor string, which are hand coded u32s in the emulator (for direct comparison against CPUID register output). - Drop the patch to add CPUID.maxphyaddr emulator helper. [Paolo] - Redo refactoring patches to land them after all the bug fixes and to do the refactoring without any semantic changes in the emulator. Jan Kiszka (1): KVM: x86: Trace the original requested CPUID function in kvm_cpuid() Sean Christopherson (6): KVM: x86: Add helpers to perform CPUID-based guest vendor check KVM x86: Extend AMD specific guest behavior to Hygon virtual CPUs KVM: x86: Fix CPUID range checks for Hypervisor and Centaur classes KVM: x86: Add build-time assertions on validity of vendor strings KVM: x86: Refactor out-of-range logic to contain the madness KVM: x86: Refactor kvm_cpuid() param that controls out-of-range logic arch/x86/include/asm/kvm_emulate.h | 37 +++++++++- arch/x86/kvm/cpuid.c | 111 +++++++++++++++++++++-------- arch/x86/kvm/cpuid.h | 8 ++- arch/x86/kvm/emulate.c | 64 ++++++++--------- arch/x86/kvm/mmu/mmu.c | 3 +- arch/x86/kvm/svm.c | 2 +- arch/x86/kvm/x86.c | 7 +- 7 files changed, 162 insertions(+), 70 deletions(-) -- 2.24.1
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