]> git.baikalelectronics.ru Git - kernel.git/commit
KVM: x86: Remove stateful CPUID handling
authorSean Christopherson <sean.j.christopherson@intel.com>
Mon, 2 Mar 2020 23:56:51 +0000 (15:56 -0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Mon, 16 Mar 2020 16:58:31 +0000 (17:58 +0100)
commitb6dbd9db9dbfa04717a4a7ecc778f181f5a0f14b
tree95a189f9a3cb75482d0f929c980053a7e610d27c
parentbc1712121fba990174e8e890d5b70033c755298d
KVM: x86: Remove stateful CPUID handling

Remove the code for handling stateful CPUID 0x2 and mark the associated
flags as deprecated.  WARN if host CPUID 0x2.0.AL > 1, i.e. if by some
miracle a host with stateful CPUID 0x2 is encountered.

No known CPU exists that supports hardware accelerated virtualization
_and_ a stateful CPUID 0x2.  Barring an extremely contrived nested
virtualization scenario, stateful CPUID support is dead code.

Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Documentation/virt/kvm/api.rst
arch/x86/kvm/cpuid.c