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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-03-02 15:56:56 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:35 +0100 |
| commit | 7c7f9548108926dbf6776b1cfe748f7c617cfd36 (patch) | |
| tree | ed3301ab926340c9a83b7871cdc3fdff5edfa4d4 /arch/x86/kvm/x86.c | |
| parent | dd69cc2542f728179d5a0ae1c972813f88ab14aa (diff) | |
| download | lwn-7c7f9548108926dbf6776b1cfe748f7c617cfd36.tar.gz lwn-7c7f9548108926dbf6776b1cfe748f7c617cfd36.zip | |
KVM: x86: Do kvm_cpuid_array capacity checks in terminal functions
Perform the capacity checks on the userspace provided kvm_cpuid_array
in the lower __do_cpuid_func() and __do_cpuid_func_emulated().
Pre-checking the array in do_cpuid_func() no longer adds value now that
__do_cpuid_func() has been trimmed down to size, i.e. doesn't invoke a
big pile of retpolined functions before doing anything useful.
Note, __do_cpuid_func() already checks the array capacity via
do_host_cpuid(), "moving" the check to __do_cpuid_func() simply means
removing a WARN_ON().
Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
0 files changed, 0 insertions, 0 deletions