diff options
| author |   mickey <mickey@openbsd.org> | 2002-04-22 12:50:34 +0000 |
|---|---|---|
| committer | mickey <mickey@openbsd.org> | 2002-04-22 12:50:34 +0000 |
| commit | f3a5fd40a24adb97b49104d79e8967c6e63958c5 (patch) | |
| tree | e5e5c82ea43cc7b8b0d7f163799cec5aec4589e9 | |
| parent | even better lt kbd map (in the best .su tradition ); from vld@vic.lt (diff) | |
| download | wireguard-openbsd-f3a5fd40a24adb97b49104d79e8967c6e63958c5.tar.xz wireguard-openbsd-f3a5fd40a24adb97b49104d79e8967c6e63958c5.zip | |
do not map malloced memory executable (do avoid possible i-cache prefetch); art@ ok
| -rw-r--r-- | sys/uvm/uvm_km.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/sys/uvm/uvm_km.c b/sys/uvm/uvm_km.c index 8f6a730ab5a..5ba6b314d17 100644 --- a/sys/uvm/uvm_km.c +++ b/sys/uvm/uvm_km.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm_km.c,v 1.28 2002/03/06 22:05:31 art Exp $ */ +/* $OpenBSD: uvm_km.c,v 1.29 2002/04/22 12:50:34 mickey Exp $ */ /* $NetBSD: uvm_km.c,v 1.42 2001/01/14 02:10:01 thorpej Exp $ */ /* @@ -507,7 +507,7 @@ uvm_km_kmemalloc(map, obj, size, flags) */ if (__predict_false(uvm_map(map, &kva, size, obj, UVM_UNKNOWN_OFFSET, - 0, UVM_MAPFLAG(UVM_PROT_ALL, UVM_PROT_ALL, UVM_INH_NONE, + 0, UVM_MAPFLAG(UVM_PROT_RW, UVM_PROT_RW, UVM_INH_NONE, UVM_ADV_RANDOM, (flags & UVM_KMF_TRYLOCK))) != KERN_SUCCESS)) { UVMHIST_LOG(maphist, "<- done (no VM)",0,0,0,0); @@ -569,11 +569,10 @@ uvm_km_kmemalloc(map, obj, size, flags) if (UVM_OBJ_IS_INTRSAFE_OBJECT(obj)) { pmap_kenter_pa(loopva, VM_PAGE_TO_PHYS(pg), - VM_PROT_ALL); + UVM_PROT_RW); } else { pmap_enter(map->pmap, loopva, VM_PAGE_TO_PHYS(pg), - UVM_PROT_ALL, - PMAP_WIRED | VM_PROT_READ | VM_PROT_WRITE); + UVM_PROT_RW, PMAP_WIRED | UVM_PROT_RW); } loopva += PAGE_SIZE; offset += PAGE_SIZE; |