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xen-devel
RE: [Xen-devel] [PATCH] new hvm platform vhpet enable parameter
> HPET is also advertised in the ACPI tables which would need
> to be gated.
Could you point me in the right direction? I see that a Linux
hvm kernel still prints a line indicating it has discovered
an HPET in the ACPI tables, but I couldn't find anything in
hvm code that would turn that off, and I just want to turn off
HPET per guest, not for Xen and all guests.
> Should be called vhpet not hpet as the 'v' is rather redundant.
OK, will fix
> Why would we want to do the same for pmtimer? Is it inaccurate?
If Linux were using it as a timekeeping source, I think it would
be (per earlier post by Dave Winchell), but on second look once
HPET is disabled, Linux discovers pmtimer but still uses PIT/TSC
based timekeeping. So an equivalent pmtimer patch might be
needed for some future version of Linux but I guess we won't worry
about that now.
> From: Samuel Thibault [mailto:samuel.thibault@xxxxxxxxxxxxx]
> > This patch applies against and was tested with xen-3.1-testing.
>
> Mmm, that's a bit old, maybe you should check it against 3.2
Will do. 3.1 is my daily test/dev environment so I started there.
Dan
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