Messages in this thread | | | Date | Tue, 29 Jun 2010 10:07:27 -0400 | Subject | Re: [PATCH] parisc: set ARCH_KMALLOC_MINALIGN | From | Matt Turner <> |
| |
On Tue, Jun 29, 2010 at 2:50 AM, FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> wrote: > This is a resend: > > http://marc.info/?t=127432584100006&r=1&w=2 > > I thought that it was merged but seems that it was lost somewhere? > > = > From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> > Subject: [PATCH] parisc: set ARCH_KMALLOC_MINALIGN > > Architectures that handle DMA-non-coherent memory need to set > ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: > the buffer doesn't share a cache with the others. > > Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> > Cc: Kyle McMartin <kyle@mcmartin.ca> > Cc: Helge Deller <deller@gmx.de> > Cc: James E.J. Bottomley <jejb@parisc-linux.org> > Cc: stable@kernel.org > --- > arch/parisc/include/asm/cache.h | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h > index 45effe6..5d87f27 100644 > --- a/arch/parisc/include/asm/cache.h > +++ b/arch/parisc/include/asm/cache.h > @@ -22,6 +22,8 @@ > #define L1_CACHE_SHIFT 5 > #endif > > +#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES > + > #ifndef __ASSEMBLY__ > > #define L1_CACHE_ALIGN(x) (((x)+(L1_CACHE_BYTES-1))&~(L1_CACHE_BYTES-1))
Looks like you can send a patch to kill L1_CACHE_ALIGN too. :)
> -- > 1.6.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-parisc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |