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xen-ia64-devel
RE: [Xen-ia64-devel] [PATCH] Fix that guest can not get continuous memor
Ok, I will modify it.
Thanks
Best Regards
--yang
>-----Original Message-----
>From: Isaku Yamahata [mailto:yamahata@xxxxxxxxxxxxx]
>Sent: 2009年2月19日 13:33
>To: Zhang, Yang
>Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-ia64-devel] [PATCH] Fix that guest can not get continuous
>memory for vhpt
>
>On Thu, Feb 19, 2009 at 01:11:53PM +0800, Zhang, Yang wrote:
>> Hi
>>
>> >From: Isaku Yamahata [mailto:yamahata@xxxxxxxxxxxxx]
>> >Sent: 2009年2月19日 11:12
>> >To: Zhang, Yang
>> >Cc: xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>> >Subject: Re: [Xen-ia64-devel] [PATCH] Fix that guest can not get continuous
>> >memory for vhpt
>> >- It is a poor approach to introduce new HVM_PARAM_VHPT_SIZE.
>> > This is inconsistent with XEN_DOMCTL_arch_setup by which libxc tells
>> > VMM vhpt size of PV domain.
>> > So the first idea which came into my mind is to call
>> > XEN_DOMCTL_ARCH_setup before populating domain memory.
>> > I haven't checked if it's possible or not, though. Maybe we can introduce
>> > new XEN_DOMAINSETUP_xxx flag.
>> I doesn't introduce HVM_PARAM_VHPT_SIZE. The hvm needs it to save the
>vhpt'size for allocating vhpt's memory when vcpu boot. I just add some code to
>save memory for vhpt beforehand when libxc tells VMM vhpt size of hvm. And I
>don't think PV domain need to do this.
>
>Oh, sorry. I misread it. Okay, so the approach looks sane.
>
>- The functions newly added in arch/ia64/xen/domain.c are hvm domain
> specific. So please move them under arch/ia64/xen/vmx/.
>
>- The pages for vhpt is allocated by alloc_domheap_pages(NULL, ...),
> Thus those memory doesn't accounted to the domain.
> So adjusting domain memory size doesn't make sense. Just drop it.
>
>- Is vhpt_page[] really necessary?
> How about setting hcb->hash directly instead of temporary
> keeping it in vhpt_page[]?
> Probably adjusting codes of resource allocating/freeing might be required,
> though.
>
>thanks,
>--
>yamahata
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