similar to: [PATCH AUTOSEL 6.1 05/15] s390/virtio: sort out physical vs virtual pointers usage

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>

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

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

This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic at linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 40 +++++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 15 deletions(-) diff --git

From: Halil Pasic <pasic at linux.ibm.com> This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Pierre Morel <pmorel at linux.ibm.com> --- drivers/s390/virtio/virtio_ccw.c | 40

This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Pierre Morel <pmorel at linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck at redhat.com> --- drivers/s390/virtio/virtio_ccw.c

From: Halil Pasic <pasic at linux.ibm.com> This will come in handy soon when we pull out the indicators from virtio_ccw_device to a memory area that is shared with the hypervisor (in particular for protected virtualization guests). Signed-off-by: Halil Pasic <pasic at linux.ibm.com> Reviewed-by: Pierre Morel <pmorel at linux.ibm.com> Signed-off-by: Michael Mueller <mimu at

On 26/04/2019 20:32, Halil Pasic wrote: > This will come in handy soon when we pull out the indicators from > virtio_ccw_device to a memory area that is shared with the hypervisor > (in particular for protected virtualization guests). > > Signed-off-by: Halil Pasic <pasic at linux.ibm.com> > --- > drivers/s390/virtio/virtio_ccw.c | 40

On 26/04/2019 20:32, Halil Pasic wrote: > This will come in handy soon when we pull out the indicators from > virtio_ccw_device to a memory area that is shared with the hypervisor > (in particular for protected virtualization guests). > > Signed-off-by: Halil Pasic <pasic at linux.ibm.com> > --- > drivers/s390/virtio/virtio_ccw.c | 40

On Thu, 23 May 2019 18:22:07 +0200 Michael Mueller <mimu at linux.ibm.com> wrote: > From: Halil Pasic <pasic at linux.ibm.com> > > This will come in handy soon when we pull out the indicators from > virtio_ccw_device to a memory area that is shared with the hypervisor > (in particular for protected virtualization guests). > > Signed-off-by: Halil Pasic <pasic

On Thu, 23 May 2019 18:22:07 +0200 Michael Mueller <mimu at linux.ibm.com> wrote: > From: Halil Pasic <pasic at linux.ibm.com> > > This will come in handy soon when we pull out the indicators from > virtio_ccw_device to a memory area that is shared with the hypervisor > (in particular for protected virtualization guests). > > Signed-off-by: Halil Pasic <pasic

On Mon, 27 May 2019 13:57:06 +0200 Halil Pasic <pasic at linux.ibm.com> wrote: > On Mon, 27 May 2019 13:00:28 +0200 > Cornelia Huck <cohuck at redhat.com> wrote: > > > On Thu, 23 May 2019 18:22:07 +0200 > > Michael Mueller <mimu at linux.ibm.com> wrote: > > > > > From: Halil Pasic <pasic at linux.ibm.com> > > > > >

On Mon, 27 May 2019 13:00:28 +0200 Cornelia Huck <cohuck at redhat.com> wrote: > On Thu, 23 May 2019 18:22:07 +0200 > Michael Mueller <mimu at linux.ibm.com> wrote: > > > From: Halil Pasic <pasic at linux.ibm.com> > > > > This will come in handy soon when we pull out the indicators from > > virtio_ccw_device to a memory area that is shared with

The CCW_CMD_SET_VQ command has a different format for revision 1+ devices, allowing to specify a more complex virtqueue layout. For now, we stay however with the old layout and simply use the new command format for virtio-1 devices. Signed-off-by: Cornelia Huck <cornelia.huck at de.ibm.com> --- drivers/s390/kvm/virtio_ccw.c | 54 ++++++++++++++++++++++++++++++++--------- 1 file changed,

On 26/04/2019 20:32, Halil Pasic 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. > > The hypervisor is supposed to poke the classic notifiers, if these are > used, out of

On 26/04/2019 20:32, Halil Pasic 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. > > The hypervisor is supposed to poke the classic notifiers, if these are > used, out of

On Fri, 10 May 2019 17:36:05 +0200 Pierre Morel <pmorel at linux.ibm.com> wrote: > On 10/05/2019 13:54, Halil Pasic wrote: > > On Fri, 10 May 2019 09:43:08 +0200 > > Pierre Morel <pmorel at linux.ibm.com> wrote: > > > >> On 09/05/2019 20:26, Halil Pasic wrote: > >>> On Thu, 9 May 2019 14:01:01 +0200 > >>> Pierre Morel