similar to: [PATCH] virtio-ccw: wire up ->bus_name callback

Before virtio-ccw could get away with not using DMA API for the pieces of memory it does ccw I/O with. With protected virtualization this has to change, since the hypervisor needs to read and sometimes also write these pieces of memory. The hypervisor is supposed to poke the classic notifiers, if these are used, out of band with regards to ccw I/O. So these need to be allocated as DMA memory

From: Halil Pasic <pasic at linux.ibm.com> Before virtio-ccw could get away with not using DMA API for the pieces of memory it does ccw I/O with. With protected virtualization this has to change, since the hypervisor needs to read and sometimes also write these pieces of memory. The hypervisor is supposed to poke the classic notifiers, if these are used, out of band with regards to ccw

From: Halil Pasic <pasic at linux.ibm.com> Before virtio-ccw could get away with not using DMA API for the pieces of memory it does ccw I/O with. With protected virtualization this has to change, since the hypervisor needs to read and sometimes also write these pieces of memory. The hypervisor is supposed to poke the classic notifiers, if these are used, out of band with regards to ccw

Before virtio-ccw could get away with not using DMA API for the pieces of memory it does ccw I/O with. With protected virtualization this has to change, since the hypervisor needs to read and sometimes also write these pieces of memory. The hypervisor is supposed to poke the classic notifiers, if these are used, out of band with regards to ccw I/O. So these need to be allocated as DMA memory

Before virtio-ccw could get away with not using DMA API for the pieces of memory it does ccw I/O with. With protected virtualization this has to change, since the hypervisor needs to read and sometimes also write these pieces of memory. The hypervisor is supposed to poke the classic notifiers, if these are used, out of band with regards to ccw I/O. So these need to be allocated as DMA memory

On Thu, 3 Jan 2019 14:00:10 +0100 Halil Pasic <pasic at linux.ibm.com> wrote: > On Wed, 2 Jan 2019 19:25:49 +0100 > Cornelia Huck <cohuck at redhat.com> wrote: > > > On Wed, 2 Jan 2019 18:50:20 +0100 > > Halil Pasic <pasic at linux.ibm.com> wrote: > > > > > A queue with a capacity of zero is clearly not a valid virtio queue. > >

Declare virtio_config_ops structure as const as it is only stored in the config field of a virtio_device structure. This field is of type const, so virtio_config_ops structures having this property can be declared const. Done using Coccinelle: @r1 disable optional_qualifier@ identifier i; position p; @@ static struct virtio_config_ops i at p={...}; @ok1@ identifier r1.i; position p; struct

Declare virtio_config_ops structure as const as it is only stored in the config field of a virtio_device structure. This field is of type const, so virtio_config_ops structures having this property can be declared const. Done using Coccinelle: @r1 disable optional_qualifier@ identifier i; position p; @@ static struct virtio_config_ops i at p={...}; @ok1@ identifier r1.i; position p; struct

From: Bhumika Goyal <bhumirks at gmail.com> Declare virtio_config_ops structure as const as it is only stored in the config field of a virtio_device structure. This field is of type const, so virtio_config_ops structures having this property can be declared const. Done using Coccinelle: @r1 disable optional_qualifier@ identifier i; position p; @@ static struct virtio_config_ops i at

On Mon, Jan 16, 2017 at 7:59 PM, Michael S. Tsirkin <mst at redhat.com> wrote: > On Mon, Jan 16, 2017 at 03:04:33PM +0100, Cornelia Huck wrote: >> From: Bhumika Goyal <bhumirks at gmail.com> >> >> Declare virtio_config_ops structure as const as it is only stored in the >> config field of a virtio_device structure. This field is of type const, so >>

On Mon, Jan 16, 2017 at 08:58:34PM +0530, Bhumika Goyal wrote: > On Mon, Jan 16, 2017 at 7:59 PM, Michael S. Tsirkin <mst at redhat.com> wrote: > > On Mon, Jan 16, 2017 at 03:04:33PM +0100, Cornelia Huck wrote: > >> From: Bhumika Goyal <bhumirks at gmail.com> > >> > >> Declare virtio_config_ops structure as const as it is only stored in the >

On Mon, Jan 16, 2017 at 08:58:34PM +0530, Bhumika Goyal wrote: > On Mon, Jan 16, 2017 at 7:59 PM, Michael S. Tsirkin <mst at redhat.com> wrote: > > On Mon, Jan 16, 2017 at 03:04:33PM +0100, Cornelia Huck wrote: > >> From: Bhumika Goyal <bhumirks at gmail.com> > >> > >> Declare virtio_config_ops structure as const as it is only stored in the >

On Mon, Jan 16, 2017 at 03:04:33PM +0100, Cornelia Huck wrote: > From: Bhumika Goyal <bhumirks at gmail.com> > > Declare virtio_config_ops structure as const as it is only stored in the > config field of a virtio_device structure. This field is of type const, so > virtio_config_ops structures having this property can be declared const. > Done using Coccinelle: > >

On Mon, Jan 16, 2017 at 03:04:33PM +0100, Cornelia Huck wrote: > From: Bhumika Goyal <bhumirks at gmail.com> > > Declare virtio_config_ops structure as const as it is only stored in the > config field of a virtio_device structure. This field is of type const, so > virtio_config_ops structures having this property can be declared const. > Done using Coccinelle: > >

On Fri, 5 Apr 2019 01:16:17 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > Before virtio-ccw could get away with not using DMA API for the pieces of > memory it does ccw I/O with. With protected virtualization this has to > change, since the hypervisor needs to read and sometimes also write these > pieces of memory. > > Let us make sure all ccw I/O is done through

Currently virtio-ccw devices do not work if the device has VIRTIO_F_IOMMU_PLATFORM. In future we do want to support DMA API with virtio-ccw. Let us do the plumbing, so the feature VIRTIO_F_IOMMU_PLATFORM works with virtio-ccw. Let us also switch from legacy avail/used accessors to the DMA aware ones (even if it isn't strictly necessary), and remove the legacy accessors (we were the last

From: Alexander Gordeev <agordeev at linux.ibm.com> [ Upstream commit 5fc5b94a273655128159186c87662105db8afeb5 ] This does not fix a real bug, since virtual addresses are currently indentical to physical ones. Reviewed-by: Nico Boehr <nrb at linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev at linux.ibm.com> Signed-off-by: Janosch Frank <frankja at linux.ibm.com>

From: Alexander Gordeev <agordeev at linux.ibm.com> [ Upstream commit 5fc5b94a273655128159186c87662105db8afeb5 ] This does not fix a real bug, since virtual addresses are currently indentical to physical ones. Reviewed-by: Nico Boehr <nrb at linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev at linux.ibm.com> Signed-off-by: Janosch Frank <frankja at linux.ibm.com>

Hi, here's the guest driver support for adapter interrupts in virtio-ccw. We use one summary indicator per page of indicators. For each device, we try to find a space in an indicator where all of its virtqueues fit. Locking probably needs some more love, but it seems to work fine so far. Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter

Hi, here's the guest driver support for adapter interrupts in virtio-ccw. We use one summary indicator per page of indicators. For each device, we try to find a space in an indicator where all of its virtqueues fit. Locking probably needs some more love, but it seems to work fine so far. Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter