On Wed, Sep 6, 2017, 22:21 David E. Box <david.e....@linux.intel.com> wrote:
> On efi systems, make efi based tsc calibration the default, followed by > the pmtimer before using the pit. This prevents Grub boot failure on > newer x86 systems that power gate the pit. > Why does put code fail? I think it was changed to detect gated pit. Also I'd prefer to use pmtimer first as we had problems with event and time routines on some Macs. Any reason not to use pmtimer first? > > Signed-off-by: David E. Box <david.e....@linux.intel.com> > --- > grub-core/kern/i386/tsc.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/grub-core/kern/i386/tsc.c b/grub-core/kern/i386/tsc.c > index 2e85289d8..de4057ddb 100644 > --- a/grub-core/kern/i386/tsc.c > +++ b/grub-core/kern/i386/tsc.c > @@ -68,7 +68,7 @@ grub_tsc_init (void) > #ifdef GRUB_MACHINE_XEN > (void) (grub_tsc_calibrate_from_xen () || calibrate_tsc_hardcode()); > #elif defined (GRUB_MACHINE_EFI) > - (void) (grub_tsc_calibrate_from_pit () || > grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_efi() || > calibrate_tsc_hardcode()); > + (void) (grub_tsc_calibrate_from_efi () || > grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_pit () || > calibrate_tsc_hardcode()); > #elif defined (GRUB_MACHINE_COREBOOT) > (void) (grub_tsc_calibrate_from_pmtimer () || > grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode()); > #else > -- > 2.13.5 > > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel >
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