linux-kernel - Re: [PATCH 11/11] swiotlb: allow initialisation with pre-allocated bounce-buffer

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Message-Id: <20090602130023W.fujita.tomonori@lab.ntt.co.jp>
Date:	Tue, 2 Jun 2009 13:08:07 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	ian.campbell@...rix.com
Cc:	linux-kernel@...r.kernel.org, fujita.tomonori@....ntt.co.jp,
	jeremy@...p.org, okir@...e.de, gregkh@...e.de, mingo@...e.hu
Subject: Re: [PATCH 11/11] swiotlb: allow initialisation with pre-allocated
 bounce-buffer

On Mon, 1 Jun 2009 16:33:03 +0100
Ian Campbell <ian.campbell@...rix.com> wrote:

> This allows the generic swiotlb code to be used by users with unusual
> requirements for the buffer allocation by allowing them to provide
> their own swiotlb buffer.
> 
> Also:
> - swiotlb_init_with_default_size is unused so collapse into
>   swiotlb_init.
> - move declarations of swiotlb_late_init_with_default_size out of *.c
>   into linux/swiotlb.h where they belong
> - Make io_tlb_nslabs and io_tlb_overflow non-static since callers of the
>   new interface will want to access them.
> 
> Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
> Cc: FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
> Cc: Jeremy Fitzhardinge <jeremy@...p.org>
> Cc: Olaf Kirch <okir@...e.de>
> Cc: Greg KH <gregkh@...e.de>
> Cc: Ingo Molnar <mingo@...e.hu>
> ---
>  arch/ia64/hp/common/hwsw_iommu.c |    3 --
>  arch/ia64/hp/common/sba_iommu.c  |    2 -
>  include/linux/swiotlb.h          |   14 ++++++++
>  lib/swiotlb.c                    |   64 +++++++++++++++++++++----------------
>  4 files changed, 50 insertions(+), 33 deletions(-)

Please tell me a pointer to Xen code to use this patch. I think that
we could have more clean interfaces.
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