lkml.org 
[lkml]   [2008]   [Sep]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRE: [PATCH 3/4 v2] PCI: support SR-IOV capability
    Date
    From
    On Monday, September 01, 2008 11:30 PM, Alex Chiang wrote:
    >To: Zhao, Yu
    >Cc: Jesse Barnes; linux-pci@vger.kernel.org; Randy Dunlap; Greg KH; Grant
    >Grundler; Matthew Wilcox; linux-kernel@vger.kernel.org; kvm@vger.kernel.org;
    >virtualization@lists.linux-foundation.org; xen-devel@lists.xensource.com
    >Subject: Re: [PATCH 3/4 v2] PCI: support SR-IOV capability
    >
    >* Zhao, Yu <yu.zhao@intel.com>:
    >> Support SR-IOV capability. By default, this feature is not enabled and the
    >SR-IOV device behaves as traditional PCI device. After it's enabled, each
    >Virtual Function's PCI configuration space can be accessed using its own Bus,
    >Device and Function Number (Routing ID). Each Virtual Function also has PCI
    >Memory Space, which is used to map its own register set.
    >>
    >> Signed-off-by: Yu Zhao <yu.zhao@intel.com>
    >> Signed-off-by: Eddie Dong <eddie.dong@intel.com>
    >>
    >> ---
    >> drivers/pci/Kconfig | 10 +
    >> drivers/pci/Makefile | 2 +
    >> drivers/pci/iov.c | 555
    >++++++++++++++++++++++++++++++++++++++++++++++
    >> drivers/pci/pci.c | 14 +-
    >> drivers/pci/pci.h | 44 ++++
    >> drivers/pci/probe.c | 5 +
    >> include/linux/pci.h | 28 +++
    >> include/linux/pci_regs.h | 20 ++
    >> 8 files changed, 677 insertions(+), 1 deletions(-)
    >> create mode 100644 drivers/pci/iov.c
    >>
    >> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
    >> index f43cc46..0a1fe01 100644
    >> --- a/drivers/pci/Kconfig
    >> +++ b/drivers/pci/Kconfig
    >> @@ -57,3 +57,13 @@ config PCI_ARI
    >> default n
    >> help
    >> This enables PCI Alternative Routing-ID Interpretation.
    >> +
    >> +config PCI_IOV
    >> + bool "PCI SR-IOV support"
    >> + depends on PCI && HOTPLUG
    >> + select PCI_MSI
    >> + select PCI_ARI
    >> + select HOTPLUG_PCI
    >> + default n
    >> + help
    >> + This allows device drivers to enable Single Root I/O Virtualization.
    >
    >I'd like to see this Kconfig help text enhanced too. Telling a
    >user that PCI_IOV enables Single Root I/O Virtualization isn't
    >that helpful, but explaining what SR-IOV actually gets you _is_
    >helpful.
    >
    > This option allows device drivers to enable Single Root I/O
    > Virtualization. Each Virtual Function's PCI configuration
    > space can be accessed using its own Bus, Device and Function
    > Number (Routing ID). Each Virtual Function also has PCI Memory
    > Space, which is used to map its own register set.

    Will do this too in next version.

    >
    >Thanks.
    >
    >/ac



    \
     
     \ /
      Last update: 2008-09-10 09:39    [W:0.025 / U:6.100 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site