linux-kernel - [PATCH] swiotlb updates for Xen dom0

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Message-Id: <1238539935-4295-1-git-send-email-jeremy@goop.org>
Date:	Tue, 31 Mar 2009 15:52:06 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	the arch/x86 maintainers <x86@...nel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] swiotlb updates for Xen dom0


Hi Fujita,

This series adds Xen support to x86 swiotlb.  This is mostly a matter of
adding some Xen code into the existing hooks in pci-swiotlb_64.c:
  - swiotlb_alloc_boot
  - swiotlb_arch_range_needs_mapping
  - swiotlb_phys_to_bus/bus_to_phys

These hooks are conditional on xen_pv_domain(), which compiles to a
constant 0 when CONFIG_XEN is not enabled (and is a simple variable
read when it is).

All the Xen-specific code is in xen-iommu.c.

This series is just the patches which touch lib/swiotlb.c or
pci-swiotlb_64.c.  You can see them with more context in:
   git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git for-linus/xen/dom0/swiotlb

Thanks,
	J

 arch/x86/kernel/pci-swiotlb_64.c |   31 ++++++++++++++++-
 arch/x86/xen/Kconfig             |    1 
 drivers/pci/xen-iommu.c          |   68 ++++++++++++++++++++++++++++++++++++---
 include/xen/swiotlb.h            |   38 +++++++++++++++++++++
 lib/swiotlb.c                    |    3 +
 5 files changed, 133 insertions(+), 8 deletions(-)


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