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From: Christoph Hellwig <hch@lst.de>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Tony Luck <tony.luck@intel.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: x86@kernel.org, iommu@lists.linux-foundation.org,
	linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org,
	netdev@vger.kernel.org
Subject: refactor 32-bit dma limit quirks
Date: Fri, 25 May 2018 16:35:05 +0200	[thread overview]
Message-ID: <20180525143512.1466-1-hch@lst.de> (raw)

Hi all,

x86 currently has some quirks to force lower dma masks.  They are mostly
useful for certain VIA systems that otherwise corrupt data, but otherwise
don't make much sense given that the modern DMA APIs do the right thing
automatically.

This series dumps a few of these old kernel command lines (including their
not really working version on ia64), and moves the VIA quirk to a flag
in struct device so that it can be apply generically.  This will be needed
to support Xylinx root ports with a similar issue that show up in common
RISC-V boards.

             reply	other threads:[~2018-05-25 14:35 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-25 14:35 Christoph Hellwig [this message]
2018-05-25 14:35 ` [PATCH 1/7] core, dma-direct: add a flag 32-bit dma limits Christoph Hellwig
2018-05-25 14:50   ` Greg Kroah-Hartman
2018-05-25 16:23     ` Christoph Hellwig
2018-05-25 16:35       ` Greg Kroah-Hartman
2018-05-25 14:35 ` [PATCH 2/7] ia64: remove the dead iommu_sac_force variable Christoph Hellwig
2018-05-25 14:35 ` [PATCH 3/7] ia64: remove iommu_dma_supported Christoph Hellwig
2018-05-25 14:35 ` [PATCH 4/7] x86: remove a stray reference to pci-nommu.c Christoph Hellwig
2018-05-26 19:23   ` Thomas Gleixner
2018-05-25 14:35 ` [PATCH 5/7] x86: remove the experimental forcesac boot option Christoph Hellwig
2018-05-28  6:07   ` Thomas Gleixner
2018-05-25 14:35 ` [PATCH 6/7] x86: remove the explicit nodac and allowdac option Christoph Hellwig
2018-05-28  6:08   ` Thomas Gleixner
2018-05-25 14:35 ` [PATCH 7/7] x86: switch the VIA 32-bit DMA quirk to use the struct device flag Christoph Hellwig
2018-05-28  6:10   ` Thomas Gleixner
2018-05-28  6:19     ` Christoph Hellwig
2018-05-28  6:18       ` Thomas Gleixner
2018-05-28  6:27         ` Christoph Hellwig
2018-05-28  6:23           ` Thomas Gleixner
2018-05-28  8:39             ` Christoph Hellwig
2018-05-28  8:34               ` Thomas Gleixner

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