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x86: work around MTRR mask setting, v2 

improve the debug printout:

- make it actually display something
- print it only once

would be nice to have a WARN_ONCE() facility, to feed such things to
kerneloops.org.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-08-22 08:22:23 +02:00
parent c4bd1fdab0
commit 9754a5b840
1 changed files with 6 additions and 1 deletions
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7
arch/x86/kernel/cpu/mtrr/generic.c
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@ -401,7 +401,12 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base,
tmp |= ~((1<<(hi - 1)) - 1); tmp |= ~((1<<(hi - 1)) - 1);
if (tmp != mask_lo) { if (tmp != mask_lo) {
WARN_ON("mtrr: your BIOS has set up an incorrect mask, fixing it up.\n"); static int once = 1;
if (once) {
printk(KERN_INFO "mtrr: your BIOS has set up an incorrect mask, fixing it up.\n");
once = 0;
}
mask_lo = tmp; mask_lo = tmp;
} }
} }