From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Olof Johansson <olof@lixom.net>
Cc: dwmw2@infradead.org, paulus@samba.org, linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] [POWERPC] vdso: Fixes for cache line sizes
Date: Thu, 15 Nov 2007 07:28:22 +1100 [thread overview]
Message-ID: <1195072102.28865.41.camel@pasglop> (raw)
In-Reply-To: <20071114192405.GA1637@lixom.net>
On Wed, 2007-11-14 at 13:24 -0600, Olof Johansson wrote:
> [POWERPC] vdso: Fixes for cache line sizes
>
> Current VDSO implementation is hardcoded to 128 byte cachelines, which
> only works on IBM's 64-bit processors.
>
> Convert it to get the line sizes out of vdso_data instead, similar to
> how the ppc64 in-kernel cache flush does it.
Please call the fields "block size" not "line size". There are subtle
differences and per architecture, it should really be block size.
>
> Signed-off-by: Olof Johansson <olof@lixom.net>
>
> ---
> Paul, this is needed to make for example the IBM jvm run on pa6t. Please
> include as bugfix for 2.6.24.
Heh, they use the vdso for flushes ? I didn't know that !
Ben.
next prev parent reply other threads:[~2007-11-14 20:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-14 19:24 [PATCH] [POWERPC] vdso: Fixes for cache line sizes Olof Johansson
2007-11-14 20:28 ` Benjamin Herrenschmidt [this message]
2007-11-14 21:28 ` [PATCH v2] [POWERPC] vdso: Fixes for cache block sizes Olof Johansson
2007-11-19 4:07 ` Paul Mackerras
2007-11-19 4:25 ` Olof Johansson
2007-11-20 1:24 ` [PATCH v3] " Olof Johansson
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