Commit de014d61 authored Sep 03, 2008 by Alok N Kataria Committed by Linus Torvalds Sep 03, 2008

x86: Change warning message in TSC calibration.



When calibration against PIT fails, the warning that we print is misleading.
In a virtualized environment the VM may get descheduled while calibration
or, the check in PIT calibration may fail due to other virtualization
overheads.

The warning message explicitly assumes that calibration failed due to SMI's
which may not be the case. Change that to something proper.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent ce363942

arch/x86/kernel/tsc.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -267,8 +267,7 @@ unsigned long native_calibrate_tsc(void)
		*/
		if (tsc_pit_min == ULONG_MAX) {
		/* PIT gave no useful value */
		printk(KERN_WARNING "TSC: PIT calibration failed due to "
		"SMI disturbance.\n");
		printk(KERN_WARNING "TSC: Unable to calibrate against PIT\n");

		/* We don't have an alternative source, disable TSC */
		if (!hpet && !pm1 && !pm2) {

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