On 12 November 2014 17:57, Antonios Motakis <a.motakis@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Hello Hongbo, > > On Wed, Nov 12, 2014 at 10:52 AM, Hongbo Zhang <hongbo.zhang@xxxxxxxxxx> wrote: >> On 28 October 2014 02:07, Antonios Motakis >> <a.motakis@xxxxxxxxxxxxxxxxxxxxxx> wrote: >>> >>> Enable building the VFIO PLATFORM driver that allows to use Linux platform >>> devices with VFIO. >>> >>> Signed-off-by: Antonios Motakis <a.motakis@xxxxxxxxxxxxxxxxxxxxxx> >>> --- >>> drivers/vfio/Kconfig | 1 + >>> drivers/vfio/Makefile | 1 + >>> drivers/vfio/platform/Kconfig | 9 +++++++++ >>> drivers/vfio/platform/Makefile | 4 ++++ >>> 4 files changed, 15 insertions(+) >>> create mode 100644 drivers/vfio/platform/Kconfig >>> create mode 100644 drivers/vfio/platform/Makefile >>> >>> diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig >>> index a0abe04..962fb80 100644 >>> --- a/drivers/vfio/Kconfig >>> +++ b/drivers/vfio/Kconfig >>> @@ -27,3 +27,4 @@ menuconfig VFIO >>> If you don't know what to do here, say N. >>> >>> source "drivers/vfio/pci/Kconfig" >>> +source "drivers/vfio/platform/Kconfig" >>> diff --git a/drivers/vfio/Makefile b/drivers/vfio/Makefile >>> index 0b035b1..dadf0ca 100644 >>> --- a/drivers/vfio/Makefile >>> +++ b/drivers/vfio/Makefile >>> @@ -3,3 +3,4 @@ obj-$(CONFIG_VFIO_IOMMU_TYPE1) += vfio_iommu_type1.o >>> obj-$(CONFIG_VFIO_IOMMU_SPAPR_TCE) += vfio_iommu_spapr_tce.o >>> obj-$(CONFIG_VFIO_SPAPR_EEH) += vfio_spapr_eeh.o >>> obj-$(CONFIG_VFIO_PCI) += pci/ >>> +obj-$(CONFIG_VFIO_PLATFORM) += platform/ >>> diff --git a/drivers/vfio/platform/Kconfig b/drivers/vfio/platform/Kconfig >>> new file mode 100644 >>> index 0000000..c51af17 >>> --- /dev/null >>> +++ b/drivers/vfio/platform/Kconfig >>> @@ -0,0 +1,9 @@ >>> +config VFIO_PLATFORM >>> + tristate "VFIO support for platform devices" >>> + depends on VFIO && EVENTFD && ARM >> >> Hi Antonios, >> Is this only for ARM? how about X86 and PowerPC? >> On Freescale's PowerPC platform, the IOMMU is called PAMU (Peripheral >> Access Management Unit), and I am trying to use this VFIO framework on >> it. >> > > In principle it should be working on any platform with such devices; > as long as you have a VFIO IOMMU driver for the PAMU (on ARM we use > VFIO PLATFORM for the device, with VFIO IOMMU TYPE1 for the IOMMU). > Antonios, As far as you know, on which ARM platform can I apply your patches directly? My purpose is to apply you patches[1], and then implement a user space driver to evaluate the performance. [1] It is better without manually merging conflicts/dependencies etc, I am vfio-platform user, not a iommu expert. > So if you have a suitable IOMMU driver for your target, feel free to > test it, and let us know of the results. > >>> >>> + help >>> + Support for platform devices with VFIO. This is required to make >>> + use of platform devices present on the system using the VFIO >>> + framework. >>> + >>> + If you don't know what to do here, say N. >>> diff --git a/drivers/vfio/platform/Makefile b/drivers/vfio/platform/Makefile >>> new file mode 100644 >>> index 0000000..279862b >>> --- /dev/null >>> +++ b/drivers/vfio/platform/Makefile >>> @@ -0,0 +1,4 @@ >>> + >>> +vfio-platform-y := vfio_platform.o vfio_platform_common.o >>> + >>> +obj-$(CONFIG_VFIO_PLATFORM) += vfio-platform.o >>> -- >>> 2.1.1 >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
