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| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2020-05-24 17:50:37 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2020-05-24 17:50:37 +0200 |
| commit | 153fcabb00c725ffd604828111752b4e65725787 (patch) | |
| tree | 727d1d8bb1499b41749f4159297c3a99743a7d32 | |
| parent | 9960a125a39bff42912525216bf23539e4000f9c (diff) | |
pc, pc64: fix wrong mtrr physmask() for machines without extended address size msr
| -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; } |