[PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources
Alexander Gordeev
agordeev at redhat.com
Tue Jun 10 23:10:29 EST 2014
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 at vger.kernel.org
Cc: linux-mips at linux-mips.org
Cc: linuxppc-dev at lists.ozlabs.org
Cc: linux-s390 at vger.kernel.org
Cc: x86 at kernel.org
Cc: xen-devel at lists.xenproject.org
Cc: iommu at lists.linux-foundation.org
Cc: linux-ide at vger.kernel.org
Cc: linux-pci at vger.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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