Re: [PATCH] VFIO: platform: enable ARM64 build
From: Baptiste Reynal
Date: Tue Jun 23 2015 - 02:56:51 EST
On Mon, Jun 22, 2015 at 6:26 PM, Alex Williamson
> On Mon, 2015-06-22 at 17:56 +0200, Eric Auger wrote:
>> Hi Baptiste,
>> No unfortunately I don't have any HW to test this currently. I just
>> test-compiled this. Up to you to decide whether you prefer waiting for a
>> functional test for this. I sent that patch since I expect ARM64 to be
>> the main platform where the VFIO platform drivermight be used for
>> virtualization use case.
On my side, VFIO has been tested on ARM64 using Fastmodels without
problems, we can go ahead with the patch.
> FWIW, I've been occasionally removing the arch condition entirely to
> build test on x86 as well. The Intel VT-d code certainly allows for
> devices described by ACPI, which I assume would fall under the platform
> category, but I don't know of any systems that do this, let alone any
> x86 platform devices that we'd actually want to expose to the user.
> Eventually we might want to consider decoupling this from an arch-based
> Kconfig option, but we could just as easily let the first non-ARM user
> think about that problem. Thanks,
Indeed, I'd rather wait for someone to show up with some use cases and
tests before removing this condition.
>> On 06/22/2015 05:49 PM, Baptiste Reynal wrote:
>> > Acked-by: Baptiste Reynal <b.reynal@xxxxxxxxxxxxxxxxxxxxxx>
>> > Tested-by: Baptiste Reynal <b.reynal@xxxxxxxxxxxxxxxxxxxxxx>
>> > Out of curiosity, have you get VFIO running on ARM64 without any problems ?
>> > On Mon, Jun 15, 2015 at 11:13 AM, Eric Auger <eric.auger@xxxxxxxxxx> wrote:
>> >> This patch enables building VFIO platform and derivatives on ARM64.
>> >> Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
>> >> ---
>> >> drivers/vfio/platform/Kconfig | 2 +-
>> >> 1 file changed, 1 insertion(+), 1 deletion(-)
>> >> diff --git a/drivers/vfio/platform/Kconfig b/drivers/vfio/platform/Kconfig
>> >> index 1df7477..bb30128 100644
>> >> --- a/drivers/vfio/platform/Kconfig
>> >> +++ b/drivers/vfio/platform/Kconfig
>> >> @@ -1,6 +1,6 @@
>> >> config VFIO_PLATFORM
>> >> tristate "VFIO support for platform devices"
>> >> - depends on VFIO && EVENTFD && ARM
>> >> + depends on VFIO && EVENTFD && (ARM || ARM64)
>> >> select VFIO_VIRQFD
>> >> help
>> >> Support for platform devices with VFIO. This is required to make
>> >> --
>> >> 1.9.1
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