[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] xen-unstable fails to boot on a system with Ivy Bridge stepping C0 cpu
At 13:44 +0100 on 03 Nov (1320327869), Igor Mammedov wrote: > Hi, > > I need a help with tracking down following issue: > > When trying to boot Xen on a system with Ivy Bridge stepping C0 CPU, it is > stuck on CPU initialization. > I've added some tracing to apic writes/reads and traced it so far to > sending INIT IPI. > > (XEN) HVM: VMX enabled > (XEN) HVM: Hardware Assisted Paging detected. > (XEN) Setting warm reset code and vector. > (XEN) apic_wrmsr (0x280,0x0) > (XEN) apic_rdmsr(0x280) = 0x0 > (XEN) Asserting INIT. > (XEN) apic_wrmsr (0x300,0x10000c500) > > After this ^^^^ write BSP becomes VERY slow and it takes several minutes > till it gets to sending STARTUP IPI: Does reverting 23724:b3434f24b082 help? Looking at it again I'm not sure that the new logic is entirely correct - in particular it no longer deasserts the INIT on x2apic systems. Cheers, Tim. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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