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| author | Oliver Upton <oupton@google.com> | 2020-10-27 16:10:42 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-11-08 04:41:29 -0500 |
| commit | 01b4f510b9f467abfc781e198e810e1ecffb782e (patch) | |
| tree | 2e0ca3e840a0a8f9b3dc2a52fb1a91256d2412c7 /include/linux/page_ext.h | |
| parent | 1930e5ddcead2c23567131e62c86b15efce054be (diff) | |
| download | lwn-01b4f510b9f467abfc781e198e810e1ecffb782e.tar.gz lwn-01b4f510b9f467abfc781e198e810e1ecffb782e.zip | |
kvm: x86: ensure pv_cpuid.features is initialized when enabling cap
Make the paravirtual cpuid enforcement mechanism idempotent to ioctl()
ordering by updating pv_cpuid.features whenever userspace requests the
capability. Extract this update out of kvm_update_cpuid_runtime() into a
new helper function and move its other call site into
kvm_vcpu_after_set_cpuid() where it more likely belongs.
Fixes: 66570e966dd9 ("kvm: x86: only provide PV features if enabled in guest's CPUID")
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20201027231044.655110-5-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/page_ext.h')
0 files changed, 0 insertions, 0 deletions