linux-kernel - [PATCH v2 0/3] virtio DMA API core stuff

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Date:	Tue, 27 Oct 2015 22:30:18 -0700
From:	Andy Lutomirski <luto@...nel.org>
To:	linux-kernel@...r.kernel.org
Cc:	Joerg Roedel <jroedel@...e.de>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	Sebastian Ott <sebott@...ux.vnet.ibm.com>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Christoph Hellwig <hch@....de>, benh@...nel.crashing.org,
	KVM <kvm@...r.kernel.org>, dwmw2@...radead.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-s390 <linux-s390@...r.kernel.org>,
	Andy Lutomirski <luto@...nel.org>
Subject: [PATCH v2 0/3] virtio DMA API core stuff

This switches virtio to use the DMA API unconditionally.  I'm sure
it breaks things, but it seems to work on x86 using virtio-pci, with
and without Xen, and using both the modern 1.0 variant and the
legacy variant.

Changes from v1:
 - Fix an endian conversion error causing a BUG to hit.
 - Fix a DMA ordering issue (swiotlb=force works now).
 - Minor cleanups.

Andy Lutomirski (3):
  virtio_net: Stop doing DMA from the stack
  virtio_ring: Support DMA APIs
  virtio_pci: Use the DMA API

 drivers/net/virtio_net.c           |  53 +++++++----
 drivers/virtio/Kconfig             |   2 +-
 drivers/virtio/virtio_pci_common.h |   3 +-
 drivers/virtio/virtio_pci_legacy.c |  19 +++-
 drivers/virtio/virtio_pci_modern.c |  34 +++++--
 drivers/virtio/virtio_ring.c       | 187 ++++++++++++++++++++++++++++++-------
 tools/virtio/linux/dma-mapping.h   |  17 ++++
 7 files changed, 246 insertions(+), 69 deletions(-)
 create mode 100644 tools/virtio/linux/dma-mapping.h

-- 
2.4.3

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