diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2005-09-25 20:04:04 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2005-09-25 20:04:04 +0000 |
| commit | 0b4beffd4c26ac02605a816373239e2645d8e14d (patch) | |
| tree | 690f4b29ab90aabf301d65fd2f098bc5b5d70e84 /sys/arch/sparc | |
| parent | f711e4a2fac8c28e3468ac7ceb99f416941a9ec5 (diff) | |
On Sun4m, be sure to steal the overlapping part of the iommu dvma space
and kernel_map from the latter. Otherwise, very bad things happen when
kernel_map usage grows.
Diffstat (limited to 'sys/arch/sparc')
| -rw-r--r-- | sys/arch/sparc/sparc/machdep.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sys/arch/sparc/sparc/machdep.c b/sys/arch/sparc/sparc/machdep.c index 7112f2b4c31..82a8bf285ed 100644 --- a/sys/arch/sparc/sparc/machdep.c +++ b/sys/arch/sparc/sparc/machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: machdep.c,v 1.106 2005/08/18 18:40:51 kettenis Exp $ */ +/* $OpenBSD: machdep.c,v 1.107 2005/09/25 20:04:03 miod Exp $ */ /* $NetBSD: machdep.c,v 1.85 1997/09/12 08:55:02 pk Exp $ */ /* @@ -265,10 +265,26 @@ cpu_startup() */ dvma_base = CPU_ISSUN4M ? DVMA4M_BASE : DVMA_BASE; dvma_end = CPU_ISSUN4M ? DVMA4M_END : DVMA_END; +#if defined(SUN4M) + if (CPU_ISSUN4M) { + /* + * The DVMA space we want partially overrides kernel_map. + * Allocate it in kernel_map as well to prevent it from being + * used for other things. + */ + if (uvm_map(kernel_map, &dvma_base, + vm_map_max(kernel_map) - dvma_base, + NULL, UVM_UNKNOWN_OFFSET, 0, + UVM_MAPFLAG(UVM_PROT_NONE, UVM_PROT_NONE, UVM_INH_NONE, + UVM_ADV_NORMAL, 0))) + panic("startup: can not steal dvma map"); + } +#endif phys_map = uvm_map_create(pmap_kernel(), dvma_base, dvma_end, VM_MAP_INTRSAFE); if (phys_map == NULL) panic("unable to create DVMA map"); + /* * Allocate DVMA space and dump into a privately managed * resource map for double mappings which is usable from |