On Tuesday 28 June 2011 05:26 pm, Andriy Gapon wrote:
> on 28/06/2011 22:14 Jung-uk Kim said the following:
> > On Tuesday 28 June 2011 07:28 am, Andriy Gapon wrote:
> >> I think that part (but not all) of the differences between
> >> FreeBSD and Linux can be explained by the fact that FreeBSD
> >> currently doesn't advertise itself as featuring
> >> ACPI_CAP_SMP_C1_NATIVE and ACPI_CAP_SMP_C3_NATIVE. I am not
> >> sure what it would take to actually support these features. I
> >> think that Linux does support (or at least advertise support)
> >> for these features.
> > Yes, Linux supports this Intel-specific feature. I think it
> > shouldn't be too hard for us, however. We just have to add
> > support for Intel-specific _CST FFH (Functional Fixed Hardware)
> > in
> > sys/dev/acpica/acpi_cpu.c. You can find more information from
> > "Intel Processor Vendor-Specific ACPI" (order number 302223-005)
> > on Intel website. Also, arch/x86/kernel/acpi/cstate.c of Linux
> > source may help. I believe Linux actually supports all
> > Intel-specific FFHs, BTW.
> Once upon a time there was a patch proposed for FreeBSD:
> Unfortunately I have never really evaluated it.
Hmm, interesting patch. I think he is in the right direction.
Thanks for sharing,
email@example.com mailing list
To unsubscribe, send any mail to "freebsd-acpi-unsubscr...@freebsd.org"