search for: 5069c1b8e193

...ucker <jean-philippe.brucker at arm.com> > --- > Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..337da0e3a87f 100644 > --- a/Documentation/devicetree/bindings/virtio/mmio.txt > +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > @@ -8,6 +8,14 @@ Required properties: > - reg: control registers base address and size including configuration space > - interrupts: interrupt...

...ucker <jean-philippe.brucker at arm.com> > --- > Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..337da0e3a87f 100644 > --- a/Documentation/devicetree/bindings/virtio/mmio.txt > +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > @@ -8,6 +8,14 @@ Required properties: > - reg: control registers base address and size including configuration space > - interrupts: interrupt...

...n to match. Signed-off-by: Mark Brown <broonie at linaro.org> --- Documentation/devicetree/bindings/virtio/mmio.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..0648851d2a25 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -1,6 +1,6 @@ * virtio memory mapped device -See http://ozlabs.org/~rusty/virtio-spec/ for more details. +See https://github.com/rustyrussell/virtio-spec for mor...

...n to match. Signed-off-by: Mark Brown <broonie at linaro.org> --- Documentation/devicetree/bindings/virtio/mmio.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..0648851d2a25 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -1,6 +1,6 @@ * virtio memory mapped device -See http://ozlabs.org/~rusty/virtio-spec/ for more details. +See https://github.com/rustyrussell/virtio-spec for mor...

...gt;> --- > >> Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ > >> 1 file changed, 8 insertions(+) > >> > >> diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > >> index 5069c1b8e193..337da0e3a87f 100644 > >> --- a/Documentation/devicetree/bindings/virtio/mmio.txt > >> +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > >> @@ -8,6 +8,14 @@ Required properties: > >> - reg: control registers base address and size including c...

Whilst always using the DMA API is OK on ARM systems in most cases, there can be a problem if a hypervisor fails to tell its guest that a virtio device is cache-coherent. In that case, the guest will end up making non-cacheable mappings for DMA buffers (i.e. the vring), which, if the host is using a cacheable view of the same buffer on the other end, is not a recipe for success. It turns out that

Whilst always using the DMA API is OK on ARM systems in most cases, there can be a problem if a hypervisor fails to tell its guest that a virtio device is cache-coherent. In that case, the guest will end up making non-cacheable mappings for DMA buffers (i.e. the vring), which, if the host is using a cacheable view of the same buffer on the other end, is not a recipe for success. It turns out that

...Documentation/devicetree/bindings/virtio/mmio.txt | 3 +++ drivers/virtio/virtio_ring.c | 11 ++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..8f2a981e1010 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -7,6 +7,8 @@ Required properties: - compatible: "virtio,mmio" compatibility string - reg: control registers base address and size including configurat...

...Documentation/devicetree/bindings/virtio/mmio.txt | 3 +++ drivers/virtio/virtio_ring.c | 11 ++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..8f2a981e1010 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -7,6 +7,8 @@ Required properties: - compatible: "virtio,mmio" compatibility string - reg: control registers base address and size including configurat...

...e mishaps. Signed-off-by: Robin Murphy <robin.murphy at arm.com> --- Documentation/devicetree/bindings/virtio/mmio.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..999a93faa67c 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -7,6 +7,16 @@ Required properties: - compatible: "virtio,mmio" compatibility string - reg: control registers base address and size including configura...

...igned-off-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> --- Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..337da0e3a87f 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -8,6 +8,14 @@ Required properties: - reg: control registers base address and size including configuration space - interrupts: interrupt generated by the device...

....brucker at arm.com> >> --- >> Documentation/devicetree/bindings/virtio/mmio.txt | 8 ++++++++ >> 1 file changed, 8 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt >> index 5069c1b8e193..337da0e3a87f 100644 >> --- a/Documentation/devicetree/bindings/virtio/mmio.txt >> +++ b/Documentation/devicetree/bindings/virtio/mmio.txt >> @@ -8,6 +8,14 @@ Required properties: >> - reg: control registers base address and size including configuration space >> - i...

...-by: Jean-Philippe Brucker <jean-philippe.brucker at arm.com> --- .../devicetree/bindings/virtio/mmio.txt | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt index 5069c1b8e193..748595473b36 100644 --- a/Documentation/devicetree/bindings/virtio/mmio.txt +++ b/Documentation/devicetree/bindings/virtio/mmio.txt @@ -8,10 +8,40 @@ Required properties: - reg: control registers base address and size including configuration space - interrupts: interrupt generated by the device...

...a new address RSN, I'll respond. > --- > Documentation/devicetree/bindings/virtio/mmio.txt | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..0648851d2a25 100644 > --- a/Documentation/devicetree/bindings/virtio/mmio.txt > +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > @@ -1,6 +1,6 @@ > * virtio memory mapped device > > -See http://ozlabs.org/~rusty/virtio-spec/ for more details. > +See https://github.c...

...bindings/virtio/mmio.txt | 3 +++ > drivers/virtio/virtio_ring.c | 11 ++++++++--- > 2 files changed, 11 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..8f2a981e1010 100644 > --- a/Documentation/devicetree/bindings/virtio/mmio.txt > +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > @@ -7,6 +7,8 @@ Required properties: > - compatible: "virtio,mmio" compatibility string > - reg: control registers base address and...

...bindings/virtio/mmio.txt | 3 +++ > drivers/virtio/virtio_ring.c | 11 ++++++++--- > 2 files changed, 11 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/virtio/mmio.txt b/Documentation/devicetree/bindings/virtio/mmio.txt > index 5069c1b8e193..8f2a981e1010 100644 > --- a/Documentation/devicetree/bindings/virtio/mmio.txt > +++ b/Documentation/devicetree/bindings/virtio/mmio.txt > @@ -7,6 +7,8 @@ Required properties: > - compatible: "virtio,mmio" compatibility string > - reg: control registers base address and...

Implement the base virtio-iommu driver, following version 0.7 of the specification [1]. Changes since last version [2]: * Address comments, thanks again for the review. * As suggested, add a DT binding description in patch 1. * Depend on VIRTIO_MMIO=y to fix a build failure? * Switch to v0.7 of the spec, which changes resv_mem parameters and adds an MMIO flag. These are trivial but not backward

Implement the base virtio-iommu driver, following version 0.7 of the specification [1]. Changes since last version [2]: * Address comments, thanks again for the review. * As suggested, add a DT binding description in patch 1. * Depend on VIRTIO_MMIO=y to fix a build failure? * Switch to v0.7 of the spec, which changes resv_mem parameters and adds an MMIO flag. These are trivial but not backward

Implement the virtio-iommu driver, following specification v0.8 [1]. Changes since v2 [2]: * Patches 2-4 allow virtio-iommu to use the PCI transport, since QEMU would like to phase out the MMIO transport. This produces a complex topology where the programming interface of the IOMMU could appear lower than the endpoints that it translates. It's not unheard of (e.g. AMD IOMMU), and the

Implement the virtio-iommu driver, following specification v0.8 [1]. Changes since v2 [2]: * Patches 2-4 allow virtio-iommu to use the PCI transport, since QEMU would like to phase out the MMIO transport. This produces a complex topology where the programming interface of the IOMMU could appear lower than the endpoints that it translates. It's not unheard of (e.g. AMD IOMMU), and the