korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-28 22:54:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

[PATCH] sh: Use pfn_valid() for lazy dcache write-back on SH7705

Browse Source 
SH7705 in extended cache mode has some left-over VALID_PAGE() cruft that it
checks when doing lazy dcache write-back.  This has been gone for some time
(the last bits were in the discontig code, which should now also be gone --
this also fixes up a build error in the non-discontig case).

pfn_valid() gives the desired behaviour, so we switch to that.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paul Mundt 2005-11-07 00:58:28 -08:00 committed by Linus Torvalds
parent 65463b73b1
commit 0d6d82b671
1 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
arch/sh/mm/tlb-sh3.c
View File

@ -40,12 +40,17 @@ void update_mmu_cache(struct vm_area_struct * vma,
return;
#if defined(CONFIG_SH7705_CACHE_32KB)
struct page *page;
page = pte_page(pte);
if (VALID_PAGE(page) && !test_bit(PG_mapped, &page->flags)) {
unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
__flush_wback_region((void *)P1SEGADDR(phys), PAGE_SIZE);
__set_bit(PG_mapped, &page->flags);
{
struct page *page = pte_page(pte);
unsigned long pfn = pte_pfn(pte);
if (pfn_valid(pfn) && !test_bit(PG_mapped, &page->flags)) {
unsigned long phys = pte_val(pte) & PTE_PHYS_MASK;
__flush_wback_region((void *)P1SEGADDR(phys),
PAGE_SIZE);
__set_bit(PG_mapped, &page->flags);
}
}
#endif
@ -80,7 +85,7 @@ void __flush_tlb_page(unsigned long asid, unsigned long page)
*/
addr = MMU_TLB_ADDRESS_ARRAY | (page & 0x1F000);
data = (page & 0xfffe0000) | asid; /* VALID bit is off */
if ((cpu_data->flags & CPU_HAS_MMU_PAGE_ASSOC)) {
addr |= MMU_PAGE_ASSOC_BIT;
ways = 1; /* we already know the way .. */