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Message-Id: <201404091015.s39AFQAu022348@aserz7021.oracle.com>
Date: Wed, 09 Apr 2014 06:15:23 -0400
Subject: Re: [LINUX PATCH 2/2] xen/pvhvm: Support more than 32 VCPUs when
 migrating.
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: xen-devel@lists.xenproject.org, konrad@kernel.org, david.vrabel@Citrix.com,
        boris.ostrovsky@oracle.com, keir@xen.org, linux-kernel@vger.kernel.org
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On Apr 9, 2014 4:03 AM, Jan Beulich <JBeulich@suse.com> wrote:
>
> >>> On 08.04.14 at 19:25, <konrad@kernel.org> wrote: 
> > + /* Only Xen 4.5 and higher supports this. */ 
> > + if (HYPERVISOR_vcpu_op(VCPUOP_is_up, smp_processor_id(), NULL) == -ENOSYS) 
> > + vcpuops = false; 
>
> Did you mean to say "for HVM guests" in the comment? And of 
> course the comment could quickly become stale if we backported 
> the Xen side change to e.g. 4.4.1. 
>

Right. But I thought that features like that (new hypercalls) wasn't applicable for backporting?

Thabksy
> Jan 
>
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