[src/trunk]: src/sys/arch/arm/arm32 Don't touch pm_onproc at all in pmap_{upd...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/74e4b5727fe8
branches:  trunk
changeset: 816936:74e4b5727fe8
user:      skrll <skrll%NetBSD.org@localhost>
date:      Wed Aug 03 15:59:58 2016 +0000

description:
Don't touch pm_onproc at all in pmap_{update,destroy} and adjust KASSERT
to suit.

Update to cover the PMAP_TLB_MAX > 1 case as well while I'm here.

diffstat:

 sys/arch/arm/arm32/pmap.c |  51 +++++++++++++++++++++++++++++++++-------------
 1 files changed, 36 insertions(+), 15 deletions(-)

diffs (77 lines):

diff -r 836b87aa1e3b -r 74e4b5727fe8 sys/arch/arm/arm32/pmap.c
--- a/sys/arch/arm/arm32/pmap.c Wed Aug 03 15:24:28 2016 +0000
+++ b/sys/arch/arm/arm32/pmap.c Wed Aug 03 15:59:58 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.338 2016/08/01 18:28:38 skrll Exp $ */
+/*     $NetBSD: pmap.c,v 1.339 2016/08/03 15:59:58 skrll Exp $ */
 
 /*
  * Copyright 2003 Wasabi Systems, Inc.
@@ -217,7 +217,7 @@
 
 #include <arm/locore.h>
 
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.338 2016/08/01 18:28:38 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.339 2016/08/03 15:59:58 skrll Exp $");
 
 //#define PMAP_DEBUG
 #ifdef PMAP_DEBUG
@@ -5014,24 +5014,45 @@
         */
 #ifdef MULTIPROCESSOR
        // This should be the last CPU with this pmap onproc
-       KASSERT(!kcpuset_isotherset(pm->pm_onproc, cpu_index(curcpu())));
-       if (kcpuset_isset(pm->pm_onproc, cpu_index(curcpu()))) {
-               struct cpu_info * const ci = curcpu();
-               KASSERT(!cpu_intr_p());
-               /*
-                * The bits in pm_onproc that belong to this
-                * TLB can be changed while this TLBs lock is
-                * not held as long as we use atomic ops.
-                */
-               kcpuset_atomic_clear(pm->pm_onproc, cpu_index(ci));
-       }
-       KASSERT(kcpuset_iszero(pm->pm_onproc));
-#endif /* MULTIPROCESSOR */
+//     KASSERT(!kcpuset_isotherset(pm->pm_onproc, cpu_index(curcpu())));
+#if PMAP_TLB_MAX > 1
+       for (u_int i = 0; !kcpuset_iszero(pm->pm_active); i++) {
+               KASSERT(i < pmap_ntlbs);
+               struct pmap_tlb_info * const ti = pmap_tlbs[i];
+#else
+               struct pmap_tlb_info * const ti = &pmap_tlb0_info;
+#endif
+               TLBINFO_LOCK(ti);
+               struct pmap_asid_info * const pai = PMAP_PAI(pm, ti);
+               if (PMAP_PAI_ASIDVALID_P(pai, ti)) {
+                       if (kcpuset_isset(pm->pm_onproc, cpu_index(curcpu()))) {
+#if PMAP_TLB_MAX == 1
+                                   KASSERT(cpu_tlb_info(ci) == ti);
+
+                                   tlb_invalidate_asids(pai->pai_asid,
+                                       pai->pai_asid);
+#else
+                                   if (cpu_tlb_info(ci) == ti) {
+                                           tlb_invalidate_asids(pai->pai_asid,
+                                               pai->pai_asid);
+                                   } else {
+                                           pm->pm_shootdown_needed = 1;
+                                   }
+#endif
+                       }
+               }
+               TLBINFO_UNLOCK(ti);
+
+#if PMAP_TLB_MAX > 1
+       }
+#endif
+#else /* MULTIPROCESSOR */
 
        struct pmap_asid_info * const pai =
            PMAP_PAI(pm, cpu_tlb_info(ci));
 
        tlb_invalidate_asids(pai->pai_asid, pai->pai_asid);
+#endif /* MULTIPROCESSOR */
 }
 #endif