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Subject[PATCH v2 0/6] AHCI: Conserve interrupts with pci_enable_msi_block_part() interface
This series is aimed to conserve on othewise wasted interrupt
resources for 10 of 16 unused MSI vectors for AHCI devices on
Intel chipsets.

Changes from v1:
- roundup_pow_of_two() and is_power_of_2() functions used
- patch 2/6 generic pci_get_msi_cap() interface introduced
- patch 4/6 MMC reg. value used to initialize multiple MSIs;
Fallback to single MSI mode is simplified
- patch 5/6 sanity check for MRSM bit added

Alexander Gordeev (6):
1/6 PCI/MSI: Introduce pci_enable_msi_block_part() interface
2/6 PCI/MSI: Factor out pci_get_msi_cap() interface
3/6 MSI/x86: Support pci_enable_msi_block_part() interface
4/6 AHCI: Conserve interrupts with pci_enable_msi_block_part() interface
5/6 AHCI: Check MRSM bit when multiple MSIs enabled
6/6 PCI/MSI: Get rid of pci_enable_msi_block_auto() interface

Documentation/PCI/MSI-HOWTO.txt | 68 ++++++++++++++++-------
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 | 8 ++-
arch/x86/include/asm/x86_init.h | 3 +-
arch/x86/kernel/apic/io_apic.c | 3 +-
drivers/ata/ahci.c | 60 ++++++++++++++------
drivers/ata/ahci.h | 1 +
drivers/iommu/irq_remapping.c | 14 +++---
drivers/pci/msi.c | 115 ++++++++++++++++++++++-----------------
include/linux/msi.h | 5 +-
include/linux/pci.h | 13 ++++-
13 files changed, 188 insertions(+), 110 deletions(-)

--
1.7.7.6


--
Regards,
Alexander Gordeev
agordeev@redhat.com


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