diff options
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/arm/pmap.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c index f438816..2b41d7c 100644 --- a/sys/arm/arm/pmap.c +++ b/sys/arm/arm/pmap.c @@ -4324,7 +4324,13 @@ pmap_copy_page(vm_page_t src, vm_page_t dst) pmap_copy_page_func(VM_PAGE_TO_PHYS(src), VM_PAGE_TO_PHYS(dst)); } -int unmapped_buf_allowed = 1; +/* + * We have code to do unmapped I/O. However, it isn't quite right and + * causes un-page-aligned I/O to devices to fail (most notably newfs + * or fsck). We give up a little performance to not allow unmapped I/O + * to gain stability. + */ +int unmapped_buf_allowed = 0; void pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset, vm_page_t mb[], |
