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pc, pc64: fix wrong mtrr physmask() for machines without extended address size msr

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cinap_lenrek 2020-05-24 17:50:37 +02:00
parent 9960a125a3
commit 153fcabb00
1 changed files with 2 additions and 0 deletions
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2
sys/src/9/pc/mtrr.c
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@ -113,6 +113,8 @@ physmask(void)
if(regs[0] >= Extaddrsz) { /* ax */
cpuid(Extaddrsz, regs);
mask = (1LL << (regs[0] & 0xFF)) - 1; /* ax */
} else {
mask &= (1LL << 36) - 1;
}
return mask;
}