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| author | kib <kib@FreeBSD.org> | 2015-12-05 08:46:41 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2015-12-05 08:46:41 +0000 |
| commit | fa2e415f2a12d5c5a416b97b4f3e1be1dc26fb3a (patch) | |
| tree | 0b8d25f54b98431297c7e152ca3c9bd74fe76a06 /sys/i386 | |
| parent | 3d60249814c85370009cbc5d649c15fc7607992e (diff) | |
| download | FreeBSD-src-fa2e415f2a12d5c5a416b97b4f3e1be1dc26fb3a.zip FreeBSD-src-fa2e415f2a12d5c5a416b97b4f3e1be1dc26fb3a.tar.gz | |
In the pmap_set_pg() function, which enables the global bit on the
ptes mapping the kernel on CPUs where global TLB entries are
supported, revert to flushing only non-global entries, i.e. to the
pre-r291688 state. There is no need to flush global TLB entries,
since only global entries created during the previous iterations of
the loop could exist at this moment.
Submitted by: alc
Differential revision: https://reviews.freebsd.org/D4368
Diffstat (limited to 'sys/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index dff9fc5..5ae41a3 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -655,7 +655,7 @@ pmap_set_pg(void) va = KERNBASE + KERNLOAD; while (va < endva) { pdir_pde(PTD, va) |= pgeflag; - invltlb_glob(); /* Play it safe, invltlb() every time */ + invltlb(); /* Flush non-PG_G entries. */ va += NBPDR; } } else { @@ -664,7 +664,7 @@ pmap_set_pg(void) pte = vtopte(va); if (*pte) *pte |= pgeflag; - invltlb_glob(); /* Play it safe, invltlb() every time */ + invltlb(); /* Flush non-PG_G entries. */ va += PAGE_SIZE; } } |
