diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2014-02-07 20:04:19 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2014-02-07 20:04:19 +0100 |
| commit | 2b4706b6624bfd0281fce6c384804bb8458dab09 (patch) | |
| tree | ba8933caf280337667a61e5e991387ec8f727452 /sys/src/9/pc/mtrr.c | |
| parent | fc7f6f8e99d9db307883448a49a1e3d6243d04cf (diff) | |
pc64: dont reuse mtrr slots that are above 4GB
we used to override/reuse mtrr slots over 4GB as the
kernel wasnt able to use that memory. pc64 can.
Diffstat (limited to 'sys/src/9/pc/mtrr.c')
| -rw-r--r-- | sys/src/9/pc/mtrr.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sys/src/9/pc/mtrr.c b/sys/src/9/pc/mtrr.c index b40bf0de6..77f754cb0 100644 --- a/sys/src/9/pc/mtrr.c +++ b/sys/src/9/pc/mtrr.c @@ -295,8 +295,7 @@ mtrr(uvlong base, uvlong size, char *tstr) for(i = 0; i < vcnt; i++){ mtrrget(&mtrr, i); mok = mtrrdec(&mtrr, &mp, &msize, &mtype); - /* reuse any entry for addresses above 4GB */ - if(!mok || mp == base && msize == size || mp >= (1LL<<32)){ + if(!mok || mp == base && msize == size){ slot = i; break; } |