From: Avi Kivity <avi@redhat.com>
To: Bhushan Bharat-R65777 <R65777@freescale.com>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"bharatb.yadav@gmail.com" <bharatb.yadav@gmail.com>
Subject: Re: [Proposal] QEMU-KVM Interface for granting Performance Monitor to guests
Date: Tue, 12 Apr 2011 17:39:01 +0300 [thread overview]
Message-ID: <4DA46405.2050308@redhat.com> (raw)
In-Reply-To: <B8D6CA50DACE9E4AAADE9A4D56FBAAE611DDEB@039-SN1MPN1-004.039d.mgd.msft.net>
On 04/12/2011 10:29 AM, Bhushan Bharat-R65777 wrote:
> Hi All,
>
> The proposal is to about defining the qemu-kvm interface for reserving the performance monitor for guest(guests) in Embedded Power Architecture. The plan is to reserve the Performance Monitor for guest/s on guest boot-up and will be released only on guest reset/exit. If a Performance Monitor reserved by host then it can't be reserved for guest and vice-versa. So when Performance monitor is reserved by host then performance monitor can't be used by guests and if reserved by guest then it should not be used by host.
In general we greatly prefer sharing vs. reservation (there are
exceptions, for example PCI device assignment).
Is there a compelling reason to assign the performance monitor to a
single guest?
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-04-12 14:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-12 7:29 [Proposal] QEMU-KVM Interface for granting Performance Monitor to guests Bhushan Bharat-R65777
2011-04-12 14:39 ` Avi Kivity [this message]
2011-04-12 16:05 ` Bhushan Bharat-R65777
2011-04-12 16:45 ` Scott Wood
2011-04-12 16:47 ` Avi Kivity
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