[src/trunk]: src/sys/arch/aarch64 Make __md_palloc pmap agnostic (think sys/u...

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

details:   https://anonhg.NetBSD.org/src/rev/6cd815c7b845
branches:  trunk
changeset: 938909:6cd815c7b845
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sat Sep 19 13:33:08 2020 +0000

description:
Make __md_palloc pmap agnostic (think sys/uvm/pmap)

diffstat:

 sys/arch/aarch64/aarch64/pmap.c |   6 +++---
 sys/arch/aarch64/include/asan.h |  27 ++++++++++++++++++++++-----
 sys/arch/aarch64/include/pmap.h |   4 +---
 3 files changed, 26 insertions(+), 11 deletions(-)

diffs (88 lines):

diff -r 971e720fea85 -r 6cd815c7b845 sys/arch/aarch64/aarch64/pmap.c
--- a/sys/arch/aarch64/aarch64/pmap.c   Sat Sep 19 07:30:32 2020 +0000
+++ b/sys/arch/aarch64/aarch64/pmap.c   Sat Sep 19 13:33:08 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.89 2020/09/14 10:06:35 ryo Exp $    */
+/*     $NetBSD: pmap.c,v 1.90 2020/09/19 13:33:08 skrll Exp $  */
 
 /*
  * Copyright (c) 2017 Ryo Shimizu <ryo%nerv.org@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.89 2020/09/14 10:06:35 ryo Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.90 2020/09/19 13:33:08 skrll Exp $");
 
 #include "opt_arm_debug.h"
 #include "opt_ddb.h"
@@ -598,7 +598,7 @@
        atomic_inc_uint(&pm->pm_refcnt);
 }
 
-paddr_t
+static paddr_t
 pmap_alloc_pdp(struct pmap *pm, struct vm_page **pgp, int flags, bool waitok)
 {
        paddr_t pa;
diff -r 971e720fea85 -r 6cd815c7b845 sys/arch/aarch64/include/asan.h
--- a/sys/arch/aarch64/include/asan.h   Sat Sep 19 07:30:32 2020 +0000
+++ b/sys/arch/aarch64/include/asan.h   Sat Sep 19 13:33:08 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: asan.h,v 1.11 2020/09/10 14:10:46 maxv Exp $   */
+/*     $NetBSD: asan.h,v 1.12 2020/09/19 13:33:08 skrll Exp $  */
 
 /*
  * Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
@@ -68,12 +68,29 @@
 {
        paddr_t pa;
 
-       if (__predict_false(__md_early))
+       if (__predict_false(__md_early)) {
                pa = (paddr_t)pmapboot_pagealloc();
-       else
-               pa = pmap_alloc_pdp(pmap_kernel(), NULL, 0, false);
+               return pa;
+       }
 
-       /* The page is zeroed. */
+       vaddr_t va;
+       if (!uvm.page_init_done) {
+               va = uvm_pageboot_alloc(PAGE_SIZE);
+               pa = AARCH64_KVA_TO_PA(va);
+       } else {
+               struct vm_page *pg;
+retry:
+               pg = uvm_pagealloc(NULL, 0, NULL, 0);
+               if (pg == NULL) {
+                       uvm_wait(__func__);
+                       goto retry;
+               }
+
+               pa = VM_PAGE_TO_PHYS(pg);
+               va = AARCH64_PA_TO_KVA(pa);
+       }
+
+       __builtin_memset((void *)va, 0, PAGE_SIZE);
        return pa;
 }
 
diff -r 971e720fea85 -r 6cd815c7b845 sys/arch/aarch64/include/pmap.h
--- a/sys/arch/aarch64/include/pmap.h   Sat Sep 19 07:30:32 2020 +0000
+++ b/sys/arch/aarch64/include/pmap.h   Sat Sep 19 13:33:08 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.h,v 1.42 2020/08/12 13:36:36 skrll Exp $ */
+/* $NetBSD: pmap.h,v 1.43 2020/09/19 13:33:08 skrll Exp $ */
 
 /*-
  * Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -205,8 +205,6 @@
 vaddr_t pmap_devmap_phystov(paddr_t);
 paddr_t pmap_devmap_vtophys(paddr_t);
 
-paddr_t pmap_alloc_pdp(struct pmap *, struct vm_page **, int, bool);
-
 #define L1_TRUNC_BLOCK(x)      ((x) & L1_FRAME)
 #define L1_ROUND_BLOCK(x)      L1_TRUNC_BLOCK((x) + L1_SIZE - 1)
 #define L2_TRUNC_BLOCK(x)      ((x) & L2_FRAME)