On 05/23/2018 05:49 PM, Andrew Cooper wrote: > On 23/05/2018 22:40, Boris Ostrovsky wrote: >> Looking at vmx_cpuid_policy_changed(): >> >> >> if ( cp->feat.ibrsb ) >> vmx_clear_msr_intercept(v, MSR_SPEC_CTRL, VMX_MSR_RW); >> else >> vmx_set_msr_intercept(v, MSR_SPEC_CTRL, VMX_MSR_RW); >> >> >> Is there a reason why we are not checking cp->feat.ssbd as well? > Yes. Read the final hunk of > http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=9df52a25e0e95a0b9971aa2fc26c5c6a5cbdf4ef
SSBD implies IBRS --- yes, that's true. But not the other way around, no? -boris _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
