Re: [PATCH 9/9] x86: Detect whether we should use Xen SWIOTLB.

["H. Peter Anvin" <hpa@zytor.com>]

On 07/27/2010 10:00 AM, Konrad Rzeszutek Wilk wrote:
> It is paramount that we call pci_xen_swiotlb_detect before
> pci_swiotlb_detect as both implementations use the 'swiotlb'
> and 'swiotlb_force' flags. The pci-xen_swiotlb_detect inhibits
> the swiotlb_force and swiotlb flag so that the native SWIOTLB
> implementation is not enabled when running under Xen.
> 
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> Cc: Albert Herranz <albert_herranz@yahoo.es>
> Cc: Ian Campbell <Ian.Campbell@citrix.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Cc: x86@kernel.org
> Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
> ---
>  arch/x86/kernel/pci-dma.c |    7 +++++--
>  1 files changed, 5 insertions(+), 2 deletions(-)
> 

Is there any way we can abstract this out a bit more instead of crapping
on generic code?

	-hpa
-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.