diff options
Diffstat (limited to 'arch/mips/mm/init.c')
| -rw-r--r-- | arch/mips/mm/init.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index b8cb0dde3af..5240432e6d1 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -8,6 +8,7 @@ * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. */ +#include <linux/bug.h> #include <linux/init.h> #include <linux/module.h> #include <linux/signal.h> @@ -26,6 +27,7 @@ #include <linux/proc_fs.h> #include <linux/pfn.h> +#include <asm/asm-offsets.h> #include <asm/bootinfo.h> #include <asm/cachectl.h> #include <asm/cpu.h> @@ -131,6 +133,8 @@ void *kmap_coherent(struct page *page, unsigned long addr) pte_t pte; int tlbidx; + BUG_ON(Page_dcache_dirty(page)); + inc_preempt_count(); idx = (addr >> PAGE_SHIFT) & (FIX_N_COLOURS - 1); #ifdef CONFIG_MIPS_MT_SMTC @@ -207,7 +211,7 @@ void copy_user_highpage(struct page *to, struct page *from, void *vfrom, *vto; vto = kmap_atomic(to, KM_USER1); - if (cpu_has_dc_aliases) { + if (cpu_has_dc_aliases && !Page_dcache_dirty(from)) { vfrom = kmap_coherent(from, vaddr); copy_page(vto, vfrom); kunmap_coherent(); @@ -498,7 +502,13 @@ unsigned long pgd_current[NR_CPUS]; * different layout ... */ #define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order))) -pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER); + +/* + * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER + * are constants. So we use the variants from asm-offset.h until that gcc + * will officially be retired. + */ +pgd_t swapper_pg_dir[_PTRS_PER_PGD] __page_aligned(_PGD_ORDER); #ifdef CONFIG_64BIT #ifdef MODULE_START pgd_t module_pg_dir[PTRS_PER_PGD] __page_aligned(PGD_ORDER); |