RE: [Xen-ia64-devel] does xen support MCA now?

["Xu, Anthony" <anthony.xu@xxxxxxxxx>]

Hi akio,

I just looked over the INIT/MCA mechanism.
And have some questions.

The process is like following,

1. xen_mca handler gets control, at this time all other pCPUs are
rendezvoused at SAL.
2. xen_mca handler get MCA log from SAL and copy it inot dom0's log
buffer.
3. xen_mca handler wake up all others pCPU, and return.


Questions:
1. If this is a TLB-related MCA, when xen_mca handler returns to guest,
this MCA may happen again.

2. If this is a platform MCA, other pCPUs wakened up may trigger this
again.



Can you explain how to handle this?


Thanks,
- Anthony


>-----Original Message-----
>From: xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-ia64-devel-
>bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Akio Takebe
>Sent: Thursday, September 13, 2007 10:51 AM
>To: Duan, Ronghui; xen-ia64-devel
>Subject: Re: [Xen-ia64-devel] does xen support MCA now?
>
>Hi, Ronghui
>
>Yes, xen-ia64 support MCA.
>
>>What is the use of code mca.c in directory
>>xen-unstable.hg/xen/arch/ia64/linux-xen? Thanks!
>Xen use it for INIT/MCA.
>Xen get the MCA log from SAL and copy it into dom0's log buffer.
>FYI, Xen will use it for kexec-ia64.
>
>Best Regards,
>
>Akio Takebe
>
>
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