Messages in this thread | | | Subject | Re: [PATCH 3/8] kvm: vmx: pass MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD down to the guest | From | Paolo Bonzini <> | Date | Mon, 15 Jan 2018 10:23:53 +0100 |
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On 13/01/2018 11:16, Longpeng (Mike) wrote: >> + /* >> + * FIXME: this is only needed until SPEC_CTRL is supported >> + * by upstream Linux in cpufeatures, then it can be replaced >> + * with static_cpu_has. >> + */ >> + have_spec_ctrl = cpu_has_spec_ctrl(); >> + if (have_spec_ctrl) >> + pr_info("kvm: SPEC_CTRL available\n"); >> + else >> + pr_info("kvm: SPEC_CTRL not available\n"); >> + > > In this approach, we must reload these modules if we update the microcode later ?
I strongly suggest using early microcode update anyway.
Paolo
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