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Date: Sun, 30 Sep 2012 13:13:09 +0200
From: Avi Kivity <avi@redhat.com>
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To: Gleb Natapov <gleb@redhat.com>
CC: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
        Jiannan Ouyang <ouyang@cs.pitt.edu>,
        Peter Zijlstra <peterz@infradead.org>, Rik van Riel <riel@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
        Marcelo Tosatti <mtosatti@redhat.com>,
        Srikar <srikar@linux.vnet.ibm.com>,
        "Nikunj A. Dadhania" <nikunj@linux.vnet.ibm.com>,
        KVM <kvm@vger.kernel.org>, chegu vinod <chegu_vinod@hp.com>,
        "Andrew M. Theurer" <habanero@linux.vnet.ibm.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Srivatsa Vaddagiri <srivatsa.vaddagiri@gmail.com>
Subject: Re: [PATCH RFC 1/2] kvm: Handle undercommitted guest case in PLE
 handler
References: <505CA2EB.7050403@linux.vnet.ibm.com> <50607F1F.2040704@redhat.com> <5060851E.1030404@redhat.com> <506166B4.4010207@linux.vnet.ibm.com> <5061713D.5060406@redhat.com> <CAJocwcf+8u84_yDC-PK0Yni93YSTWzYvr69nq6b3pNv1MwVJzQ@mail.gmail.com> <50641356.5070008@redhat.com> <CAJocwcc19F+PtsQ5okGMvYeVnkEigpZRpwWY9JgeRPFqfcVoXA@mail.gmail.com> <506540C7.9070105@linux.vnet.ibm.com> <50680049.5020206@redhat.com> <20120930110755.GB1009@redhat.com>
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On 09/30/2012 01:07 PM, Gleb Natapov wrote:
> On Sun, Sep 30, 2012 at 10:18:17AM +0200, Avi Kivity wrote:
>> On 09/28/2012 08:16 AM, Raghavendra K T wrote:
>> > 
>> >>
>> >>     +struct pv_sched_info {
>> >>     +       unsigned long   sched_bitmap;
>> > 
>> > Thinking, whether we need something similar to cpumask here?
>> > Only thing is we are representing guest (v)cpumask.
>> > 
>> 
>> DECLARE_BITMAP(sched_bitmap, KVM_MAX_VCPUS)
>> 
> vcpu_id can be greater than KVM_MAX_VCPUS.

Use the index into the vcpu table as the bitmap index then.  In fact
it's better because then the lookup to get the vcpu pointer is trivial.


-- 
error compiling committee.c: too many arguments to function