search for: virtio_ccw_drop_indicators

...indicatorp_dma_addr); > if (!indicatorp) > return; > *indicatorp = 0; > @@ -359,8 +385,10 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, > "Failed to deregister indicators (%d)\n", ret); > else if (vcdev->is_thinint) > virtio_ccw_drop_indicators(vcdev); > - kfree(indicatorp); > - kfree(thinint_area); > + if (indicatorp) > + __vc_dma_free(&vcdev->vdev, sizeof(&vcdev->indicators), > + indicatorp, indicatorp_dma_addr); > + vc_dma_free_struct(&vcdev->vdev, thinint_area); Don't you need to c...

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

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

...&vcdev->vdev, + sizeof(indicators(vcdev))); if (!indicatorp) return; *indicatorp = 0; @@ -368,8 +387,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, "Failed to deregister indicators (%d)\n", ret); else if (vcdev->is_thinint) virtio_ccw_drop_indicators(vcdev); - kfree(indicatorp); - kfree(thinint_area); + __vc_dma_free(&vcdev->vdev, sizeof(indicators(vcdev)), + indicatorp); + vc_dma_free_struct(&vcdev->vdev, thinint_area); } static inline long __do_kvm_notify(struct subchannel_id schid, @@ -416,15 +436,15 @@ static int vi...

...&vcdev->vdev, + sizeof(indicators(vcdev))); if (!indicatorp) return; *indicatorp = 0; @@ -369,8 +388,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, "Failed to deregister indicators (%d)\n", ret); else if (vcdev->is_thinint) virtio_ccw_drop_indicators(vcdev); - kfree(indicatorp); - kfree(thinint_area); + __vc_dma_free(&vcdev->vdev, sizeof(indicators(vcdev)), + indicatorp); + vc_dma_free_struct(&vcdev->vdev, thinint_area); } static inline long __do_kvm_notify(struct subchannel_id schid, @@ -417,15 +437,15 @@ static int vi...

...&vcdev->vdev, + sizeof(indicators(vcdev))); if (!indicatorp) return; *indicatorp = 0; @@ -369,8 +388,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, "Failed to deregister indicators (%d)\n", ret); else if (vcdev->is_thinint) virtio_ccw_drop_indicators(vcdev); - kfree(indicatorp); - kfree(thinint_area); + __vc_dma_free(&vcdev->vdev, sizeof(indicators(vcdev)), + indicatorp); + vc_dma_free_struct(&vcdev->vdev, thinint_area); } static inline long __do_kvm_notify(struct subchannel_id schid, @@ -417,15 +437,15 @@ static int vi...

...loc(vcdev->cdev, + sizeof(indicators(vcdev))); if (!indicatorp) return; *indicatorp = 0; @@ -369,8 +373,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, "Failed to deregister indicators (%d)\n", ret); else if (vcdev->is_thinint) virtio_ccw_drop_indicators(vcdev); - kfree(indicatorp); - kfree(thinint_area); + ccw_device_dma_free(vcdev->cdev, indicatorp, sizeof(indicators(vcdev))); + ccw_device_dma_free(vcdev->cdev, thinint_area, sizeof(*thinint_area)); } static inline long __do_kvm_notify(struct subchannel_id schid, @@ -417,15 +421,15 @@ st...

...loc(vcdev->cdev, + sizeof(indicators(vcdev))); if (!indicatorp) return; *indicatorp = 0; @@ -369,8 +373,8 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, "Failed to deregister indicators (%d)\n", ret); else if (vcdev->is_thinint) virtio_ccw_drop_indicators(vcdev); - kfree(indicatorp); - kfree(thinint_area); + ccw_device_dma_free(vcdev->cdev, indicatorp, sizeof(indicators(vcdev))); + ccw_device_dma_free(vcdev->cdev, thinint_area, sizeof(*thinint_area)); } static inline long __do_kvm_notify(struct subchannel_id schid, @@ -417,15 +421,15 @@ st...

Hi, next version of the guest exploitation of virtio-ccw adapter interrupts. Changes from the last version: - adapt to latest kvm-next - changed housekeeping for indicator locations: we now use cacheline-sized and aligned areas - minor tweaks Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter interrupt support. arch/s390/include/asm/irq.h

Hi, next version of the guest exploitation of virtio-ccw adapter interrupts. Changes from the last version: - adapt to latest kvm-next - changed housekeeping for indicator locations: we now use cacheline-sized and aligned areas - minor tweaks Cornelia Huck (2): KVM: s390: virtio-ccw: Handle command rejects. KVM: s390: virtio-ccw adapter interrupt support. arch/s390/include/asm/irq.h

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 Wed, 29 May 2019 14:26:56 +0200 Michael Mueller <mimu at linux.ibm.com> wrote: > 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

On Wed, 29 May 2019 14:26:56 +0200 Michael Mueller <mimu at linux.ibm.com> wrote: > 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

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 09/05/2019 20:26, Halil Pasic wrote: > On Thu, 9 May 2019 14:01:01 +0200 > Pierre Morel <pmorel at linux.ibm.com> wrote: > >> On 08/05/2019 16:31, Pierre Morel wrote: >>> 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

On 09/05/2019 20:26, Halil Pasic wrote: > On Thu, 9 May 2019 14:01:01 +0200 > Pierre Morel <pmorel at linux.ibm.com> wrote: > >> On 08/05/2019 16:31, Pierre Morel wrote: >>> 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

On 08/05/2019 16:31, Pierre Morel wrote: > 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> >> --- >>