From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Gordeev Subject: [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources Date: Tue, 10 Jun 2014 15:10:29 +0200 Message-ID: Return-path: Sender: linux-pci-owner@vger.kernel.org To: linux-kernel@vger.kernel.org Cc: Alexander Gordeev , linux-doc@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, xen-devel@lists.xenproject.org, iommu@lists.linux-foundation.org, linux-ide@vger.kernel.org, linux-pci@vger.kernel.org List-Id: linux-ide@vger.kernel.org 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 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by lists.ozlabs.org (Postfix) with ESMTP id ACD0F1A00DA for ; Tue, 10 Jun 2014 23:09:33 +1000 (EST) From: Alexander Gordeev To: linux-kernel@vger.kernel.org Subject: [PATCH 0/3] Add pci_enable_msi_partial() to conserve MSI-related resources Date: Tue, 10 Jun 2014 15:10:29 +0200 Message-Id: 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 , xen-devel@lists.xenproject.org, linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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