[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [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@xxxxxxxxxxxxxxx
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: linux-s390@xxxxxxxxxxxxxxx
Cc: x86@xxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
Cc: iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-ide@xxxxxxxxxxxxxxx
Cc: linux-pci@xxxxxxxxxxxxxxx

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


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.