Messages in this thread | | | Subject | Re: [PATCH -v3] x86: Disable x2apic if nox2apic is specified | From | Suresh Siddha <> | Date | Thu, 28 Oct 2010 22:53:28 -0700 |
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On Tue, 2010-10-26 at 23:27 -0700, Yinghai Lu wrote: > For > 1. x2apic preenabled system > 2. first kernel have x2apic enabled, and try to kexec second kernel with "nox2apic" > > Will put back cpu with apic id < 255 into xapic mode, instead of panic. > > -v2: use x2apic_disabled instead of nox2apic, Suggested by Thomas > update x2apic_supported with x2apic_disabled, Suggested by Thomas > > -v3: add checking for boot cpu apic id > 255. in that case will just panic > --- pointed out by Suresh. >
Can we please hold off in merging this patch for a bit? There are some subtleties in going back to xapic when the platform/cpu's are in x2apic mode. I will check and get back to you on this after KS.
thanks, suresh
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