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Re: [Qemu-devel] [PATCH 1/2] Add HPET emulation to qemu (v3)
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH 1/2] Add HPET emulation to qemu (v3) |
Date: |
Fri, 17 Oct 2008 16:49:32 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Beth Kon wrote:
> Clock drift on Linux is in the range of .017% - .019%, loaded and unloaded. I
> haven't found a straightforward way to test on Windows and would appreciate
> any pointers to existing approaches.
Is there any reason why there should be any clock drift, when the
guest is using a non-PIT clock?
I'm probably being naive, but with 32-bit or 64-bit HPET counters
available to the guest, and accurate values from the CMOS clock
emulation, I don't see why drift would accumulate over the long term
relative to the host clock.
-- Jamie