[src/riastradh-drm2]: src/sys/external/bsd/drm2/linux Call uvm_vm_page_to_phy...

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

details:   https://anonhg.NetBSD.org/src/rev/73555349cbe5
branches:  riastradh-drm2
changeset: 788618:73555349cbe5
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Tue Jan 21 20:56:50 2014 +0000

description:
Call uvm_vm_page_to_phys before taking a spin lock to ease debugging.

diffstat:

 sys/external/bsd/drm2/linux/linux_kmap.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (34 lines):

diff -r 4ff085b0e7d1 -r 73555349cbe5 sys/external/bsd/drm2/linux/linux_kmap.c
--- a/sys/external/bsd/drm2/linux/linux_kmap.c  Tue Jan 21 20:56:40 2014 +0000
+++ b/sys/external/bsd/drm2/linux/linux_kmap.c  Tue Jan 21 20:56:50 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_kmap.c,v 1.1.2.3 2013/09/08 16:16:37 riastradh Exp $     */
+/*     $NetBSD: linux_kmap.c,v 1.1.2.4 2014/01/21 20:56:50 riastradh Exp $     */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_kmap.c,v 1.1.2.3 2013/09/08 16:16:37 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_kmap.c,v 1.1.2.4 2014/01/21 20:56:50 riastradh Exp $");
 
 #include <sys/types.h>
 #include <sys/kmem.h>
@@ -144,6 +144,7 @@
 void *
 kmap_atomic(struct page *page)
 {
+       const paddr_t paddr = uvm_vm_page_to_phys(&page->p_vmp);
 
        mutex_spin_enter(&linux_kmap_atomic_lock);
 
@@ -151,7 +152,6 @@
        KASSERT(!pmap_extract(pmap_kernel(), linux_kmap_atomic_vaddr, NULL));
 
        const vaddr_t vaddr = linux_kmap_atomic_vaddr;
-       const paddr_t paddr = uvm_vm_page_to_phys(&page->p_vmp);
        const int prot = (VM_PROT_READ | VM_PROT_WRITE);
        const int flags = 0;
        pmap_kenter_pa(vaddr, paddr, prot, flags);