| Message ID | 20180725133451.7083-1-geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [PATCH/RFC] drivers/vfio: Allow type-1 IOMMU instantiation with Renesas IPMMU-VMSA | expand |
Hi Geert, On 25/07/18 14:34, Geert Uytterhoeven wrote: > The Renesas IPMMU-VMSA driver is compatible with the notion of a type-1 > IOMMU in VFIO. > > This patch allows guests to use the VFIO_IOMMU_TYPE1 API on hosts > equipped with a Renesas VMSA-compatible IPMMU. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > Lightly tested with sata_rcar on Renesas R-Car H3 ES2.0. > > For testing, this patch and all prerequisites are available in the > topic/rcar3-virt-gpio-passthrough-v3 branch of my git repository at > git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git. > --- > drivers/vfio/Kconfig | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig > index c84333eb5eb59bef..a3e21e7c066596d7 100644 > --- a/drivers/vfio/Kconfig > +++ b/drivers/vfio/Kconfig > @@ -21,7 +21,8 @@ config VFIO_VIRQFD > menuconfig VFIO > tristate "VFIO Non-Privileged userspace driver framework" > depends on IOMMU_API > - select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM_SMMU || ARM_SMMU_V3) > + select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM_SMMU || ARM_SMMU_V3 || \ > + IPMMU_VMSA) I recall this came up in the context of virtio-iommu too[1], wherein we decided that listing individual drivers was actually a bit silly and this should simply have ARM || ARM64 for consistency. Looks like there's even more justification now :) Robin. [1] https://www.mail-archive.com/kvmarm@lists.cs.columbia.edu/msg16235.html > select ANON_INODES > help > VFIO provides a framework for secure userspace device drivers. >
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig index c84333eb5eb59bef..a3e21e7c066596d7 100644 --- a/drivers/vfio/Kconfig +++ b/drivers/vfio/Kconfig @@ -21,7 +21,8 @@ config VFIO_VIRQFD menuconfig VFIO tristate "VFIO Non-Privileged userspace driver framework" depends on IOMMU_API - select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM_SMMU || ARM_SMMU_V3) + select VFIO_IOMMU_TYPE1 if (X86 || S390 || ARM_SMMU || ARM_SMMU_V3 || \ + IPMMU_VMSA) select ANON_INODES help VFIO provides a framework for secure userspace device drivers.
The Renesas IPMMU-VMSA driver is compatible with the notion of a type-1 IOMMU in VFIO. This patch allows guests to use the VFIO_IOMMU_TYPE1 API on hosts equipped with a Renesas VMSA-compatible IPMMU. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- Lightly tested with sata_rcar on Renesas R-Car H3 ES2.0. For testing, this patch and all prerequisites are available in the topic/rcar3-virt-gpio-passthrough-v3 branch of my git repository at git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git. --- drivers/vfio/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)