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...be assigned only while irqfd enabled. Signed-off-by: Li Liu <john.liuli at huawei.com> --- drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 28ddb55..7229605 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) return ret; } +/* Notify all virtqueues on an interrupt. */ +static irqreturn_t vm_interrupt_irqfd(int irq, void *opaque) +{ + struc...

...be assigned only while irqfd enabled. Signed-off-by: Li Liu <john.liuli at huawei.com> --- drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index 28ddb55..7229605 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) return ret; } +/* Notify all virtqueues on an interrupt. */ +static irqreturn_t vm_interrupt_irqfd(int irq, void *opaque) +{ + struc...

...Signed-off-by: Li Liu <john.liuli at huawei.com> --- drivers/virtio/virtio_mmio.c | 21 ++++++++++++++++++++- include/linux/virtio_mmio.h | 3 +++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c index ef9a165..28ddb55 100644 --- a/drivers/virtio/virtio_mmio.c +++ b/drivers/virtio/virtio_mmio.c @@ -122,6 +122,8 @@ struct virtio_mmio_device { /* a list of queues so we can dispatch IRQs */ spinlock_t lock; struct list_head virtqueues; + + uint8_t *isr_mem; }; struct virtio_mmio_vq_info { @@ -443,6 +445,7...

...Li Liu <john.liuli at huawei.com> >> --- >> drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- >> 1 file changed, 32 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c >> index 28ddb55..7229605 100644 >> --- a/drivers/virtio/virtio_mmio.c >> +++ b/drivers/virtio/virtio_mmio.c >> @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) >> return ret; >> } >> >> +/* Notify all virtqueues on an interrupt. */ >>...

...Li Liu <john.liuli at huawei.com> >> --- >> drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- >> 1 file changed, 32 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c >> index 28ddb55..7229605 100644 >> --- a/drivers/virtio/virtio_mmio.c >> +++ b/drivers/virtio/virtio_mmio.c >> @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) >> return ret; >> } >> >> +/* Notify all virtqueues on an interrupt. */ >>...

From: Li Liu <john.liuli at huawei.com> This set of patches try to implemet irqfd support of vhost-net based on virtio-mmio. I had posted a mail to talking about the status of vhost-net on kvm-arm refer to http://www.spinics.net/lists/kvm-arm/msg10804.html. Some dependent patches are listed in the mail too. Basically the vhost-net brings great performance improvements, almost 50%+.

From: Li Liu <john.liuli at huawei.com> This set of patches try to implemet irqfd support of vhost-net based on virtio-mmio. I had posted a mail to talking about the status of vhost-net on kvm-arm refer to http://www.spinics.net/lists/kvm-arm/msg10804.html. Some dependent patches are listed in the mail too. Basically the vhost-net brings great performance improvements, almost 50%+.

...t; > Signed-off-by: Li Liu <john.liuli at huawei.com> > --- > drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- > 1 file changed, 32 insertions(+), 2 deletions(-) > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > index 28ddb55..7229605 100644 > --- a/drivers/virtio/virtio_mmio.c > +++ b/drivers/virtio/virtio_mmio.c > @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) > return ret; > } > > +/* Notify all virtqueues on an interrupt. */ > +static irqreturn_t vm_interrupt...

...uli at huawei.com> > --- > drivers/virtio/virtio_mmio.c | 21 ++++++++++++++++++++- > include/linux/virtio_mmio.h | 3 +++ > 2 files changed, 23 insertions(+), 1 deletion(-) > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > index ef9a165..28ddb55 100644 > --- a/drivers/virtio/virtio_mmio.c > +++ b/drivers/virtio/virtio_mmio.c > @@ -122,6 +122,8 @@ struct virtio_mmio_device { > /* a list of queues so we can dispatch IRQs */ > spinlock_t lock; > struct list_head virtqueues; > + > + uint8_t *isr_mem; > }; >...

...ei.com> > >> --- > >> drivers/virtio/virtio_mmio.c | 34 ++++++++++++++++++++++++++++++++-- > >> 1 file changed, 32 insertions(+), 2 deletions(-) > >> > >> diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > >> index 28ddb55..7229605 100644 > >> --- a/drivers/virtio/virtio_mmio.c > >> +++ b/drivers/virtio/virtio_mmio.c > >> @@ -259,7 +259,31 @@ static irqreturn_t vm_interrupt(int irq, void *opaque) > >> return ret; > >> } > >> > >> +/* Notify all virtq...