[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH for-4.13 v2] x86/vlapic: allow setting APIC_SPIV_FOCUS_DISABLED in x2APIC mode
On 21.11.2019 11:19, Roger Pau Monne wrote: > Current code unconditionally prevents setting APIC_SPIV_FOCUS_DISABLED > regardless of the processor model, which is not correct according to > the specification. > > This issue was discovered while trying to boot a pvshim with x2APIC > enabled. > > Always allow setting APIC_SPIV_FOCUS_DISABLED: the local APIC > provided to guests is emulated by Xen, and as such doesn't depend on > the features found on the hardware processor. Note for example that > Xen offers x2APIC support to guests even when the underlying hardware > doesn't have such feature. > > Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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