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Re: [Qemu-devel] [PATCH] Timer/clock for Linux
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [PATCH] Timer/clock for Linux |
Date: |
Wed, 26 Apr 2006 15:21:07 +0100 |
User-agent: |
KMail/1.9.1 |
On Wednesday 26 April 2006 14:01, Jamie Lokier wrote:
> Paul Brook wrote:
> > One solution (which is also desirable for other reasons) is to
> > implement some form of guest cycle counting based on the
> > instructions actually executed. Then use that as the high-precision
> > timesource, and use some for of adaptive method to keep host and
> > guest clocks in sync.
>
> That's what I meant, expressed more clearly, except that I meant to
> count guest time based on the real time spent executing guest code,
> rather than counting individual instructions. Thanks!
How do you propose doing that? It implies you have some way of interrupting
the guest after it has executed a small amount of guest code, where "small"
is less than the resolution+latency of host timer interrupts.
Paul
- [Qemu-devel] [PATCH] Timer/clock for Linux, Kazu, 2006/04/11
- Message not available
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Fabrice Bellard, 2006/04/24
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Jamie Lokier, 2006/04/24
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Fabrice Bellard, 2006/04/25
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Jamie Lokier, 2006/04/25
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Paul Brook, 2006/04/25
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Jamie Lokier, 2006/04/26
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux,
Paul Brook <=
- Re: [Qemu-devel] [PATCH] Timer/clock for Linux, Jamie Lokier, 2006/04/26
Re: [Qemu-devel] [PATCH] Timer/clock for Linux, NyOS, 2006/04/25