Switch PV pool allocator to use km_alloc(9) instead of uvm_km_kmemalloc(9).

Reduce differences between pmaps & allow us to remove another deprecated
allocator.

ok phessler@, miod@

diff --git a/sys/arch/arm/arm/pmap7.c b/sys/arch/arm/arm/pmap7.c
index 44bb3b3..8ab7c6e 100644 (file)
--- a/sys/arch/arm/arm/pmap7.c
+++ b/sys/arch/arm/arm/pmap7.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap7.c,v 1.66 2023/01/01 19:49:17 miod Exp $ */
+/*     $OpenBSD: pmap7.c,v 1.67 2024/10/02 10:12:52 mpi Exp $  */
 /*     $NetBSD: pmap.c,v 1.147 2004/01/18 13:03:50 scw Exp $   */
 
 /*
@@ -238,10 +238,10 @@ struct pool pmap_pmap_pool;
  * Pool of PV structures
  */
 struct pool pmap_pv_pool;
-void *pmap_bootstrap_pv_page_alloc(struct pool *, int, int *);
-void pmap_bootstrap_pv_page_free(struct pool *, void *);
-struct pool_allocator pmap_bootstrap_pv_allocator = {
-       pmap_bootstrap_pv_page_alloc, pmap_bootstrap_pv_page_free
+void *pmap_pv_page_alloc(struct pool *, int, int *);
+void pmap_pv_page_free(struct pool *, void *);
+struct pool_allocator pmap_pv_allocator = {
+       pmap_pv_page_alloc, pmap_pv_page_free
 };
 
 /*
@@ -2360,7 +2360,7 @@ pmap_bootstrap(pd_entry_t *kernel_l1pt, vaddr_t vstart, vaddr_t vend)
        pool_init(&pmap_pmap_pool, sizeof(struct pmap), 0, IPL_NONE, 0,
            "pmappl", &pool_allocator_single);
        pool_init(&pmap_pv_pool, sizeof(struct pv_entry), 0, IPL_VM, 0,
-           "pvepl", &pmap_bootstrap_pv_allocator);
+           "pvepl", &pmap_pv_allocator);
        pool_init(&pmap_l2dtable_pool, sizeof(struct l2_dtable), 0, IPL_VM, 0,
            "l2dtblpl", NULL);
        pool_init(&pmap_l2ptp_pool, L2_TABLE_SIZE_REAL, L2_TABLE_SIZE_REAL,
@@ -2397,48 +2397,22 @@ pmap_init(void)
        pmap_initialized = 1;
 }
 
-static vaddr_t last_bootstrap_page = 0;
-static void *free_bootstrap_pages = NULL;
-
 void *
-pmap_bootstrap_pv_page_alloc(struct pool *pp, int flags, int *slowdown)
+pmap_pv_page_alloc(struct pool *pp, int flags, int *slowdown)
 {
-       extern void *pool_page_alloc(struct pool *, int, int *);
-       vaddr_t new_page;
-       void *rv;
-
-       if (pmap_initialized)
-               return (pool_page_alloc(pp, flags, slowdown));
-       *slowdown = 0;
+       struct kmem_dyn_mode kd = KMEM_DYN_INITIALIZER;
 
-       if (free_bootstrap_pages) {
-               rv = free_bootstrap_pages;
-               free_bootstrap_pages = *((void **)rv);
-               return (rv);
-       }
-
-       new_page = uvm_km_kmemalloc(kernel_map, NULL, PAGE_SIZE,
-           (flags & PR_WAITOK) ? 0 : UVM_KMF_NOWAIT);
+       kd.kd_waitok = ISSET(flags, PR_WAITOK);
+       kd.kd_slowdown = slowdown;
 
-       last_bootstrap_page = new_page;
-       return ((void *)new_page);
+       return (km_alloc(pp->pr_pgsize,
+           pmap_initialized ? &kv_page : &kv_any, pp->pr_crange, &kd));
 }
 
 void
-pmap_bootstrap_pv_page_free(struct pool *pp, void *v)
+pmap_pv_page_free(struct pool *pp, void *v)
 {
-       extern void pool_page_free(struct pool *, void *);
-
-       if (pmap_initialized) {
-               pool_page_free(pp, v);
-               return;
-       }
-
-       if ((vaddr_t)v < last_bootstrap_page) {
-               *((void **)v) = free_bootstrap_pages;
-               free_bootstrap_pages = v;
-               return;
-       }
+       km_free(v, pp->pr_pgsize, &kv_page, pp->pr_crange);
 }
 
 /*