diff options
Diffstat (limited to 'sys/arch/mips64')
| -rw-r--r-- | sys/arch/mips64/include/proc.h | 3 | ||||
| -rw-r--r-- | sys/arch/mips64/mips64/context.S | 23 | ||||
| -rw-r--r-- | sys/arch/mips64/mips64/vm_machdep.c | 19 |
3 files changed, 32 insertions, 13 deletions
diff --git a/sys/arch/mips64/include/proc.h b/sys/arch/mips64/include/proc.h index 587ee4be25f..2d9682d8800 100644 --- a/sys/arch/mips64/include/proc.h +++ b/sys/arch/mips64/include/proc.h @@ -1,4 +1,4 @@ -/* $OpenBSD: proc.h,v 1.4 2009/11/19 20:13:51 miod Exp $ */ +/* $OpenBSD: proc.h,v 1.5 2009/12/07 19:01:03 miod Exp $ */ /* * Copyright (c) 1992, 1993 @@ -46,6 +46,7 @@ struct mdproc { int md_flags; /* machine-dependent flags */ long md_ss_addr; /* single step address for ptrace */ int md_ss_instr; /* single step instruction for ptrace */ + vaddr_t md_uarea; /* allocated uarea virtual addr */ /* The following is RM7000 dependent, but kept in for compatibility */ int md_pc_ctrl; /* performance counter control */ int md_pc_count; /* performance counter */ diff --git a/sys/arch/mips64/mips64/context.S b/sys/arch/mips64/mips64/context.S index 0c8ed024f7c..322a99d942b 100644 --- a/sys/arch/mips64/mips64/context.S +++ b/sys/arch/mips64/mips64/context.S @@ -1,4 +1,4 @@ -/* $OpenBSD: context.S,v 1.31 2009/11/19 20:16:27 miod Exp $ */ +/* $OpenBSD: context.S,v 1.32 2009/12/07 19:01:06 miod Exp $ */ /* * Copyright (c) 2002-2003 Opsycon AB (www.opsycon.se / www.opsycon.com) @@ -159,13 +159,6 @@ NON_LEAF(cpu_switchto, FRAMESZ(CF_SZ), ra) li t1, SONPROC sb t1, P_STAT(s0) # set to onproc. - /* - * We need to wire the process kernel stack mapping so there - * will be no tlb misses in exception handlers. This is done - * by invalidating any tlb entries mapping the U-area and - * put valid mappings in tlb entries 0 and 1. - */ - /* get process ASID */ PTR_L t0, P_VMSPACE(s0) # p->p_vmspace PTR_L t1, VMSPACE_PMAP(t0) # ->vm_map.pmap @@ -173,6 +166,15 @@ NON_LEAF(cpu_switchto, FRAMESZ(CF_SZ), ra) or v0, t3 dmtc0 v0, COP_0_TLB_HI # init high entry (tlbid) + +#if UPAGES > 1 + /* + * We need to wire the process kernel stack mapping so there + * will be no tlb misses in exception handlers. This is done + * by invalidating any tlb entries mapping the U-area and + * put valid mappings in tlb entries 0 and 1. + */ + LA t1, (VM_MIN_KERNEL_ADDRESS) PTR_SUBU t2, t3, t1 bltz t2, ctx3 # not mapped. @@ -215,7 +217,7 @@ ctx1: nop tlbwi -#if (UPAGES != 2) +#if UPAGES > 2 dmtc0 v0, COP_0_TLB_HI # init high entry (tlbid) lw ta0, 8(t1) lw ta1, 12(t1) @@ -252,11 +254,12 @@ ctx2: nop nop tlbwi -#endif +#endif /* UPAGES > 2 */ nop nop nop nop +#endif /* UPAGES > 1 */ ctx3: diff --git a/sys/arch/mips64/mips64/vm_machdep.c b/sys/arch/mips64/mips64/vm_machdep.c index a73db7dfd0a..94352a1bad0 100644 --- a/sys/arch/mips64/mips64/vm_machdep.c +++ b/sys/arch/mips64/mips64/vm_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vm_machdep.c,v 1.20 2009/10/22 22:08:54 miod Exp $ */ +/* $OpenBSD: vm_machdep.c,v 1.21 2009/12/07 19:01:06 miod Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 1993 @@ -68,9 +68,20 @@ cpu_fork(p1, p2, stack, stacksize, func, arg) void (*func)(void *); void *arg; { - struct pcb *pcb = &p2->p_addr->u_pcb; + struct pcb *pcb; +#if UPAGES == 1 + paddr_t pa; +#endif extern struct proc *machFPCurProcPtr; +#if UPAGES == 1 + /* replace p_addr with a direct translation address */ + p2->p_md.md_uarea = (vaddr_t)p2->p_addr; + pmap_extract(pmap_kernel(), p2->p_md.md_uarea, &pa); + p2->p_addr = (void *)PHYS_TO_XKPHYS(pa, CCA_CACHED); +#endif + pcb = &p2->p_addr->u_pcb; + /* * If we own the FPU, save its state before copying the PCB. */ @@ -135,6 +146,10 @@ cpu_exit(p) machFPCurProcPtr = (struct proc *)0; pmap_deactivate(p); +#if UPAGES == 1 + /* restore p_addr for proper deallocation */ + p->p_addr = (void *)p->p_md.md_uarea; +#endif sched_exit(p); } |