diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 2014-11-18 15:20:16 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 2014-11-18 15:20:16 +0000 |
| commit | 1aa84a6b4fa793d2d71c503ad197d6ad33ff6fb1 (patch) | |
| tree | b7562d55e3a8998497120db377933dcebca53ac0 /sys/arch | |
| parent | f2191e791d31bab2d5473ae90e1b660bb5a88ddb (diff) | |
make pmap_zero_page MP-safe, by using the directmap
mpi will investigate speedups after this.
ok mpi kettenis
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/powerpc/powerpc/pmap.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/sys/arch/powerpc/powerpc/pmap.c b/sys/arch/powerpc/powerpc/pmap.c index 953e5072c25..a20a5fa959d 100644 --- a/sys/arch/powerpc/powerpc/pmap.c +++ b/sys/arch/powerpc/powerpc/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.132 2014/11/16 12:30:58 deraadt Exp $ */ +/* $OpenBSD: pmap.c,v 1.133 2014/11/18 15:20:15 deraadt Exp $ */ /* * Copyright (c) 2001, 2002, 2007 Dale Rahn. @@ -1220,25 +1220,7 @@ pmap_collect(pmap_t pm) void pmap_zero_page(struct vm_page *pg) { - paddr_t pa = VM_PAGE_TO_PHYS(pg); -#ifdef USE_DCBZ - int i; - paddr_t addr = zero_page; -#endif - - /* simple_lock(&pmap_zero_page_lock); */ - pmap_kenter_pa(zero_page, pa, PROT_READ | PROT_WRITE); -#ifdef USE_DCBZ - for (i = PAGE_SIZE/CACHELINESIZE; i>0; i--) { - __asm volatile ("dcbz 0,%0" :: "r"(addr)); - addr += CACHELINESIZE; - } -#else - bzero((void *)zero_page, PAGE_SIZE); -#endif - pmap_kremove_pg(zero_page); - - /* simple_unlock(&pmap_zero_page_lock); */ + bzero((void *)pmap_map_direct(pg), PAGE_SIZE); } /* |