Re: [RFT][PATCH] ACPI / init: Run acpi_early_init() before efi_enter_virtual_mode()

H. Peter Anvin
2014-01-14T18:00:52Z

On 01/13/2014 08:09 PM, joeyli wrote:
>
> This patch works to me on Acer Gateway Z5WT2 UEFI notebook and Intel
> UEFI development board.
>
> Does it possible move acpi_early_init() to before timekeeping_init()?
> The position is also before efi_enter_virtual_mode() and that will be
> useful for parsing ACPI TAD to set system clock:
>
> 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)) {
>

Hi Toshi,

Could you try this variant, too? If this works as well then we end up
solving two problems in one patch...

-hpa