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- From 446794de8da4329ea532cbee4ca877bcafd0e534 Mon Sep 17 00:00:00 2001
- From: "David E. Box" <david.e.box@linux.intel.com>
- Date: Fri, 15 Sep 2017 15:37:05 -0700
- Subject: tsc: Change default tsc calibration method to pmtimer on EFI systems
- On efi systems, make pmtimer based tsc calibration the default over the
- pit. This prevents Grub from hanging on Intel SoC systems that power gate
- the pit.
- Signed-off-by: David E. Box <david.e.box@linux.intel.com>
- Reviewed-by: Daniel Kiper <daniel.kiper@oracle.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..f266eb131 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_pmtimer () || grub_tsc_calibrate_from_pit () || grub_tsc_calibrate_from_efi() || calibrate_tsc_hardcode());
- #elif defined (GRUB_MACHINE_COREBOOT)
- (void) (grub_tsc_calibrate_from_pmtimer () || grub_tsc_calibrate_from_pit () || calibrate_tsc_hardcode());
- #else
- --
- cgit v1.1-26-g67d0
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