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Re: [Xen-devel][PATCH] Multiple HVM time device model support in HV

On 25 May 2006, at 03:51, Dong, Eddie wrote:

This patch targets to support multiple HVM time device models coming
        1: Adopt an abstract layer for periodic time on top of different
HV time device models like PIT, RTC and ACPI time.
        2: Extract VMM knowledge from PIT DM code and keep close with
qemu for easy maintain in future.
        3: Use guest time (TSC) to drive PIT CLK that helps us to remove
a lot of extra logic previously introduced to convert from host time to
guest time.
        4: Some cleanup for SMP code like move cache_tsc_offset to per

This patch is very large. Most of it seems to deal with this new abstraction of 'periodic time'. What does that mean, and why is it useful?

 -- Keir

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