From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-ide-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: remove PCI_DMA_BUS_IS_PHYS V2
Date: Tue, 24 Apr 2018 20:16:20 +0200 [thread overview]
Message-ID: <20180424181625.22410-1-hch@lst.de> (raw)
Hi all,
this series tries to get rid of the global and PCI_DMA_BUS_IS_PHYS flag,
which causes the block layer and networking code to bounce buffer memory
above the dma mask in some cases. It is a leftover from i386 + highmem
days and is obsolete now that we have swiotlb or iommus so that the
dma ops implementations can always (minus the ISA DMA case which
will require further attention) handle memory passed to them.
Changes since V1:
- dropped all patches not strictly required to remove
PCI_DMA_BUS_IS_PHYS, those will be resent separately
next reply other threads:[~2018-04-24 18:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-24 18:16 Christoph Hellwig [this message]
[not found] ` <20180424181625.22410-1-hch-jcswGhMUV9g@public.gmane.org>
2018-04-24 18:16 ` [PATCH 1/5] scsi: reduce use of block bounce buffers Christoph Hellwig
2018-04-24 18:16 ` [PATCH 2/5] ide: kill ide_toggle_bounce Christoph Hellwig
2018-04-25 2:02 ` Jens Axboe
[not found] ` <5aaca0d3-417f-57f3-969f-b4c777c3fd48-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>
2018-04-26 7:20 ` Christoph Hellwig
[not found] ` <20180426072033.GA14700-jcswGhMUV9g@public.gmane.org>
2018-04-26 15:11 ` Jens Axboe
2018-04-24 18:16 ` [PATCH 3/5] ide: remove the PCI_DMA_BUS_IS_PHYS check Christoph Hellwig
2018-04-24 18:16 ` [PATCH 4/5] net: remove the PCI_DMA_BUS_IS_PHYS check in illegal_highdma Christoph Hellwig
2018-04-24 18:16 ` [PATCH 5/5] PCI: remove PCI_DMA_BUS_IS_PHYS Christoph Hellwig
2018-04-24 18:23 ` Palmer Dabbelt
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