Andrei Dorofeev wrote: > I also think it should be HW_ALL per socket if P-state hardware > coordination is supported (there's CPUID bit for that) or SW_ALL per > socket otherwise.
MISC_PWR_MGMT(bit0) MSR can tell us if it's HW_ALL or not. Ideally, there is an option in the BIOS for that. Thanks, -Aubrey > > - Andrei > > On Wed, Sep 24, 2008 at 3:26 PM, Mark Haywood > <Mark.Haywood at sun.com> wrote: >> Eric Saxe wrote: >>> I recall that on some systems, _PSD didn't exist, in which case >>> cpudrv defaults to using the socket as a P-State dependency domain. >>> Does anyone know what the domain coordination type (e.g. SW_ALL, >>> SW_ANY, HW_ALL) would default to in that case? >>> >> >> I believe it is HW_ALL, but Aubrey or Asok might be able to say for >> sure. >> >> Mark >> >>> Thanks, >>> -Eric
