linux-kernel - [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources

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Date:	Tue, 10 Jun 2014 15:10:29 +0200
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	Alexander Gordeev <agordeev@...hat.com>, linux-doc@...r.kernel.org,
	linux-mips@...ux-mips.org, linuxppc-dev@...ts.ozlabs.org,
	linux-s390@...r.kernel.org, x86@...nel.org,
	xen-devel@...ts.xenproject.org, iommu@...ts.linux-foundation.org,
	linux-ide@...r.kernel.org, linux-pci@...r.kernel.org
Subject: [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources

Add new pci_enable_msi_partial() interface and use it to
conserve on othewise wasted interrupt resources.

AHCI driver is the first user which would conserve on
10 out of 16 unused MSI vectors on some Intel chipsets.

Cc: linux-doc@...r.kernel.org
Cc: linux-mips@...ux-mips.org
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: linux-s390@...r.kernel.org
Cc: x86@...nel.org
Cc: xen-devel@...ts.xenproject.org
Cc: iommu@...ts.linux-foundation.org
Cc: linux-ide@...r.kernel.org
Cc: linux-pci@...r.kernel.org

Alexander Gordeev (3):
  PCI/MSI: Add pci_enable_msi_partial()
  PCI/MSI/x86: Support pci_enable_msi_partial()
  AHCI: Use pci_enable_msi_partial() to conserve on 10/16 MSIs

 Documentation/PCI/MSI-HOWTO.txt |   36 ++++++++++++++--
 arch/mips/pci/msi-octeon.c      |    2 +-
 arch/powerpc/kernel/msi.c       |    4 +-
 arch/s390/pci/pci.c             |    2 +-
 arch/x86/include/asm/pci.h      |    3 +-
 arch/x86/include/asm/x86_init.h |    3 +-
 arch/x86/kernel/apic/io_apic.c  |    2 +-
 arch/x86/kernel/x86_init.c      |    4 +-
 arch/x86/pci/xen.c              |    9 +++-
 drivers/ata/ahci.c              |    4 +-
 drivers/iommu/irq_remapping.c   |   10 ++--
 drivers/pci/msi.c               |   83 ++++++++++++++++++++++++++++++++++-----
 include/linux/msi.h             |    5 +-
 include/linux/pci.h             |    3 +
 14 files changed, 134 insertions(+), 36 deletions(-)

-- 
1.7.7.6

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