RE: [Xen-devel] [PATCH] DOM0: Adding MCA Loging support in DOM0

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>>> "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> 10.06.09 04:45 >>>
>Jan Beulich wrote:
>>>>> "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> 09.06.09 11:30 >>>
>>> Jan, I think the native sub-options (X86_MCE_INTEL and
>> X86_MCE_AMD) needs be enabled still.
>>> When a MCE happens, and dom0 is effected, that MCE will be
>> injected to dom0 as virtual MCE, and that requires to enable these
>>> otions.
>>> When a MCE happens and dom0 is not effected, that MCE will be
>> sent to dom0 as vIRQ so that dom0 can log that event for
>>> analysis.
>> 
>> Oh, okay, if the code is indeed needed, than that's fine. But
>> the hacks needed
>> to get mce_amd.c to compile look suspicious. As much as e.g. changing
>> the defaults for the MCE Kconfig sub-options - those should be
>> kept as is, and if
>> the new code has any kind of dependency on them, the to-be-added new
>> Kconfig option should express this accurately.
>
>Maybe we should change the "add" to "copy back". That two code are from
>native kernel, but it is missed when copy the apic.c to apic-xen.c, we just
>add it back. (After all, these hunks just change xen specific code,
>apic-xen.c and mach-xen/asm/hw-irq.h)

But both changes are wrong for Xen: Neither can you do APIC writes in Dom0
(or setup an APIC local vector entry in particular), nor do vectors 0xf9 and
0xfa have any significance there.

Jan


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel