diff options
| author | Helge Deller <deller@gmx.de> | 2014-04-09 19:49:28 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2014-04-13 15:00:53 +0200 |
| commit | 0ef36bd2b37815719e31a72d2beecc28ca8ecd26 (patch) | |
| tree | 585481e9ab58d3354977ff611ec21457220b29d8 /arch/parisc/kernel/cache.c | |
| parent | 496252f787560df18a65fdc74dc3180f7cd2c723 (diff) | |
parisc: change value of SHMLBA from 0x00400000 to PAGE_SIZE
On parisc, SHMLBA was defined to 0x00400000 (4MB) to reflect that we need to
take care of our caches for shared mappings. But actually, we can map a file at
any multiple address of PAGE_SIZE, so let us correct that now with a value of
PAGE_SIZE for SHMLBA. Instead we now take care of this cache colouring via the
constant SHM_COLOUR while we map shared pages.
Signed-off-by: Helge Deller <deller@gmx.de>
CC: Jeroen Roovers <jer@gentoo.org>
CC: John David Anglin <dave.anglin@bell.net>
CC: Carlos O'Donell <carlos@systemhalted.org>
Cc: stable@kernel.org [3.13+]
Diffstat (limited to 'arch/parisc/kernel/cache.c')
| -rw-r--r-- | arch/parisc/kernel/cache.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index a6ffc775a9f8..f6448c7c62b5 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -323,7 +323,8 @@ void flush_dcache_page(struct page *page) * specifically accesses it, of course) */ flush_tlb_page(mpnt, addr); - if (old_addr == 0 || (old_addr & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) { + if (old_addr == 0 || (old_addr & (SHM_COLOUR - 1)) + != (addr & (SHM_COLOUR - 1))) { __flush_cache_page(mpnt, addr, page_to_phys(page)); if (old_addr) printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? (char *)mpnt->vm_file->f_path.dentry->d_name.name : "(null)"); |