diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2007-01-12 19:19:35 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2007-01-12 19:19:35 +0000 |
| commit | 0d4487fe419f565308ab5595eebcf02edc704636 (patch) | |
| tree | 4a0fb7d80b0f4384eef3cbf1307111f8cb280d32 /sys/arch | |
| parent | 17ba040d4d84eab68168f731acdaadc98bf5b57a (diff) | |
Move kernel virtual address space to make sure it doesn't overlap with
physical memory to avoid problems on UltraSPARC-III and III+.
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/sparc64/include/vmparam.h | 5 | ||||
| -rw-r--r-- | sys/arch/sparc64/sparc64/pmap.c | 11 |
2 files changed, 11 insertions, 5 deletions
diff --git a/sys/arch/sparc64/include/vmparam.h b/sys/arch/sparc64/include/vmparam.h index d7ffda068dc..4060b2d30ee 100644 --- a/sys/arch/sparc64/include/vmparam.h +++ b/sys/arch/sparc64/include/vmparam.h @@ -1,4 +1,4 @@ -/* $OpenBSD: vmparam.h,v 1.14 2005/04/11 15:13:01 deraadt Exp $ */ +/* $OpenBSD: vmparam.h,v 1.15 2007/01/12 19:19:34 kettenis Exp $ */ /* $NetBSD: vmparam.h,v 1.18 2001/05/01 02:19:19 thorpej Exp $ */ /* @@ -130,10 +130,9 @@ #define VM_MIN_ADDRESS ((vaddr_t)0) #define VM_MAX_ADDRESS ((vaddr_t)-1) #define VM_MAXUSER_ADDRESS ((vaddr_t)-1) -#define VM_MAXUSER_ADDRESS32 ((vaddr_t)(0x00000000ffffffffL&~PGOFSET)) #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)KERNBASE) -#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)KERNEND) +#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0x000007ffffffffffL) #define VM_PHYSSEG_MAX 32 /* up to 32 segments */ #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH diff --git a/sys/arch/sparc64/sparc64/pmap.c b/sys/arch/sparc64/sparc64/pmap.c index 188764c20b7..c24a6ffe362 100644 --- a/sys/arch/sparc64/sparc64/pmap.c +++ b/sys/arch/sparc64/sparc64/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.33 2007/01/06 21:08:07 kettenis Exp $ */ +/* $OpenBSD: pmap.c,v 1.34 2007/01/12 19:19:34 kettenis Exp $ */ /* $NetBSD: pmap.c,v 1.107 2001/08/31 16:47:41 eeh Exp $ */ #undef NO_VCACHE /* Don't forget the locked TLB in dostart */ /* @@ -1536,6 +1536,9 @@ pmap_init() vm_num_phys = avail_end - avail_start; } +/* Start of non-cachable physical memory on UltraSPARC-III. */ +#define VM_MAXPHYS_ADDRESS ((vaddr_t)0x0000040000000000L) + /* * How much virtual space is available to the kernel? */ @@ -1545,8 +1548,12 @@ pmap_virtual_space(start, end) vaddr_t *start, *end; { /* - * Reserve one segment for kernel virtual memory + * Make sure virtual memory and physical memory don't overlap + * to avoid problems with ASI_PHYS_CACHED on UltraSPARC-III. */ + if (vmmap < VM_MAXPHYS_ADDRESS) + vmmap = VM_MAXPHYS_ADDRESS; + /* Reserve two pages for pmap_copy_page && /dev/mem */ *start = kbreak = (vaddr_t)(vmmap + 2*NBPG); *end = VM_MAX_KERNEL_ADDRESS; |