| Subject | Re: [PATCH v3 10/11] x86/mm: Enable CR4.PCIDE on supported systems | From | Boris Ostrovsky <> | Date | Fri, 23 Jun 2017 09:35:44 -0400 |
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> diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c > index f33eef4ebd12..a136aac543c3 100644 > --- a/arch/x86/xen/enlighten_pv.c > +++ b/arch/x86/xen/enlighten_pv.c > @@ -295,6 +295,12 @@ static void __init xen_init_capabilities(void) > setup_clear_cpu_cap(X86_FEATURE_ACC); > setup_clear_cpu_cap(X86_FEATURE_X2APIC); > > + /* > + * Xen PV would need some work to support PCID: CR3 handling as well > + * as xen_flush_tlb_others() would need updating. > + */ > + setup_clear_cpu_cap(X86_FEATURE_PCID); > + > if (!xen_initial_domain()) > setup_clear_cpu_cap(X86_FEATURE_ACPI); >
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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