diff options
| -rw-r--r-- | sys/src/9/pc/mtrr.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/src/9/pc/mtrr.c b/sys/src/9/pc/mtrr.c index 3c41cd275..4b1558bfe 100644 --- a/sys/src/9/pc/mtrr.c +++ b/sys/src/9/pc/mtrr.c @@ -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; } |