linux-kernel - Re: [PATCH] parisc: set ARCH_KMALLOC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <AANLkTikiJJ5G4Jy9sd644hpAljWFN_xvUJmpDZhxGf2x@mail.gmail.com>
Date:	Tue, 29 Jun 2010 10:07:27 -0400
From:	Matt Turner <mattst88@...il.com>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	linux-parisc@...r.kernel.org, kyle@...artin.ca, deller@....de,
	jejb@...isc-linux.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] parisc: set ARCH_KMALLOC_MINALIGN

On Tue, Jun 29, 2010 at 2:50 AM, FUJITA Tomonori
<fujita.tomonori@....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@....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@....ntt.co.jp>
> Cc: Kyle McMartin <kyle@...artin.ca>
> Cc: Helge Deller <deller@....de>
> Cc: James E.J. Bottomley <jejb@...isc-linux.org>
> Cc: stable@...nel.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@...r.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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/