From: Alexander Gordeev <agordeev@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org, linux-s390@vger.kernel.org,
linux-pci@vger.kernel.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-ide@vger.kernel.org,
iommu@lists.linux-foundation.org,
Alexander Gordeev <agordeev@redhat.com>,
xen-devel@lists.xenproject.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources
Date: Tue, 10 Jun 2014 15:10:29 +0200 [thread overview]
Message-ID: <cover.1402405331.git.agordeev__7642.64439135349$1402406040$gmane$org@redhat.com> (raw)
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@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: x86@kernel.org
Cc: xen-devel@lists.xenproject.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-ide@vger.kernel.org
Cc: linux-pci@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
next reply other threads:[~2014-06-10 13:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-10 13:10 Alexander Gordeev [this message]
2014-06-10 13:10 [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources Alexander Gordeev
2014-06-10 13:10 ` Alexander Gordeev
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