Re: [PATCH 6/7] x86: remove the explicit nodac and allowdac option
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- To: Christoph Hellwig <hch@xxxxxx>
- Subject: Re: [PATCH 6/7] x86: remove the explicit nodac and allowdac option
- From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
- Date: Mon, 28 May 2018 08:08:19 +0200 (CEST)
- Cc: Ingo Molnar <mingo@xxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Fenghua Yu <fenghua.yu@xxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx
- In-reply-to: <20180525143512.1466-7-hch@lst.de>
- References: <20180525143512.1466-1-hch@lst.de> <20180525143512.1466-7-hch@lst.de>
- User-agent: Alpine 2.21 (DEB 202 2017-01-01)
On Fri, 25 May 2018, Christoph Hellwig wrote:
x86/pci-dma: ...
Please
> This is something drivers should decide (modulo chipset quirks like
> for VIA), which as far as I can tell is how things have been handled
> for the last 15 years.
>
> Note that we keep the usedac option for now, as it is used in the wild
> to override the too generic VIA quirk.
>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
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