Messages in this thread | | | Date | Fri, 29 Oct 2010 00:26:55 -0700 | From | Yinghai Lu <> | Subject | Re: [PATCH -v3] x86: Disable x2apic if nox2apic is specified |
| |
On 10/28/2010 10:53 PM, Suresh Siddha wrote: > 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.
sure. take you time.
Yinghai
| |