On Wednesday, January 15, 2014 04:16:59 AM H. Peter Anvin wrote:
> Rafael, you want to take this one?
Yes, I can take it.
Thanks!
> On 01/14/2014 11:25 PM, Lee, Chun-Yi wrote:
> > This is a variant patch from Rafael J. Wysocki's
> > ACPI / init: Run acpi_early_init() before efi_enter_virtual_mode()
> >
> > According to Matt Fleming, if acpi_early_init() was executed before
> > efi_enter_virtual_mode(), the EFI initialization could benefit from
> > it, so Rafael's patch makes that happen.
> >
> > And, we want accessing ACPI TAD device to set system clock, so move
> > acpi_early_init() before timekeeping_init(). This final position is
> > also before efi_enter_virtual_mode().
> >
> > v2:
> > Move acpi_early_init() before timekeeping_init() to prepare setting
> > system clock with ACPI TAD.
> >
> > v1:
> > Rafael J. Wysocki
> > ACPI / init: Run acpi_early_init() before efi_enter_virtual_mode()
> >
> > Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
> > Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxx>
> > Cc: H. Peter Anvin <hpa@xxxxxxxxx>
> > Cc: Borislav Petkov <bp@xxxxxxx>
> > Cc: Matthew Garrett <matthew.garrett@xxxxxxxxxx>
> > Tested-by: Toshi Kani <toshi.kani@xxxxxx>
> > Signed-off-by: Lee, Chun-Yi <jlee@xxxxxxxx>
> > ---
> > init/main.c | 2 +-
> > 1 files changed, 1 insertions(+), 1 deletions(-)
> >
> > diff --git a/init/main.c b/init/main.c
> > index febc511..b6d93c8 100644
> > --- a/init/main.c
> > +++ b/init/main.c
> > @@ -565,6 +565,7 @@ asmlinkage void __init start_kernel(void)
> > init_timers();
> > hrtimers_init();
> > softirq_init();
> > + acpi_early_init();
> > timekeeping_init();
> > time_init();
> > sched_clock_postinit();
> > @@ -641,7 +642,6 @@ asmlinkage void __init start_kernel(void)
> >
> > check_bugs();
> >
> > - acpi_early_init(); /* before LAPIC and SMP init */
> > sfi_init_late();
> >
> > if (efi_enabled(EFI_RUNTIME_SERVICES)) {
> >
>
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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