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...] sys_exit_group+0x12/0x16 [ 2025.666396] [<ffffffff81bbdb92>] system_call_fastpath+0x16/0x1b Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: kvm at vger.kernel.org Cc: virtualization at lists.linux-foundation.org Cc: netdev at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/vhost/net.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 882a51f..c9be601 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -586,6 +586,7 @@ static int vhost_net_release(struct ino...

...] sys_exit_group+0x12/0x16 [ 2025.666396] [<ffffffff81bbdb92>] system_call_fastpath+0x16/0x1b Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: kvm at vger.kernel.org Cc: virtualization at lists.linux-foundation.org Cc: netdev at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/vhost/net.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 882a51f..c9be601 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -586,6 +586,7 @@ static int vhost_net_release(struct ino...

...construct to retrieve optional values from the config space. Cc: Amit Shah <amit.shah at redhat.com> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/char/virtio_console.c | 10 ++++------ 1 files changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index fb68b12..ed99f3b 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @...

...construct to retrieve optional values from the config space. Cc: Amit Shah <amit.shah at redhat.com> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/char/virtio_console.c | 10 ++++------ 1 files changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index fb68b12..ed99f3b 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @...

...l be read from offset 24 if the device indeed supports MSI-X. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: netdev at vger.kernel.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/net/virtio_net.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 0c7321c..55ccf96 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -981,14 +981,6 @@...

...l be read from offset 24 if the device indeed supports MSI-X. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Michael S. Tsirkin <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: netdev at vger.kernel.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/net/virtio_net.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 0c7321c..55ccf96 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -981,14 +981,6 @@...

Trivial changes to remove forgotten junk, format comments, and correct names. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_balloon.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index e058ace..289e998 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_ballo...

Trivial changes to remove forgotten junk, format comments, and correct names. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_balloon.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index e058ace..289e998 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_ballo...

...lloon. This will avoid having to take an exit before actually using the pages. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_balloon.c | 16 ++++++++++------ 1 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index e058ace..055f95d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/v...

...lloon. This will avoid having to take an exit before actually using the pages. Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_balloon.c | 16 ++++++++++------ 1 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index e058ace..055f95d 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/v...

Some virtio device drivers (9p) need to translate high virtual addresses to physical addresses, which are inserted into the virtqueue for processing by userspace. This patch exports the kmap_to_page symbol, so that the affected drivers can be compiled as modules. Signed-off-by: Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

Some virtio device drivers (9p) need to translate high virtual addresses to physical addresses, which are inserted into the virtqueue for processing by userspace. This patch exports the kmap_to_page symbol, so that the affected drivers can be compiled as modules. Signed-off-by: Will Deacon <will.deacon at arm.com> --- mm/highmem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)

...on top, and define the virtio-mmio device using kernel command line. Cc: Pawel Moll <pawel.moll at arm.com> Cc: Peter Maydell <peter.maydell at linaro.org> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- tools/kvm/Makefile | 1 + tools/kvm/builtin-run.c | 2 + tools/kvm/include/kvm/virtio-mmio.h | 61 ++++++++++++ tools/kvm/include/kvm/virtio-net.h | 1 + tools/kvm/include/kvm/virtio-trans.h | 1 + tools/kvm/virtio/mmio.c...

...on top, and define the virtio-mmio device using kernel command line. Cc: Pawel Moll <pawel.moll at arm.com> Cc: Peter Maydell <peter.maydell at linaro.org> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: virtualization at lists.linux-foundation.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- tools/kvm/Makefile | 1 + tools/kvm/builtin-run.c | 2 + tools/kvm/include/kvm/virtio-mmio.h | 61 ++++++++++++ tools/kvm/include/kvm/virtio-net.h | 1 + tools/kvm/include/kvm/virtio-trans.h | 1 + tools/kvm/virtio/mmio.c...

...tes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 5353.28 Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_ring.c | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index c7a2c20..5e0ce15 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@...

...tes bytes secs. 10^6bits/sec 87380 16384 16384 10.00 5353.28 Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: "Michael S. Tsirkin" <mst at redhat.com> Cc: virtualization at lists.linux-foundation.org Cc: kvm at vger.kernel.org Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/virtio/virtio_ring.c | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index c7a2c20..5e0ce15 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@...

As it was discussed recently, there's currently no way for the guest to notify the host about panics. Further more, there's no reasonable way to notify the host of other critical events such as an OOM kill. This short patch series introduces a new device named virtio-notifier which does two simple things: 1. Provide a simple interface for the guest to notify the host of critical

As it was discussed recently, there's currently no way for the guest to notify the host about panics. Further more, there's no reasonable way to notify the host of other critical events such as an OOM kill. This short patch series introduces a new device named virtio-notifier which does two simple things: 1. Provide a simple interface for the guest to notify the host of critical

...SC is enabled we will use indirect descriptors even if we have plenty of space in the ring. This means that we take a performance hit at all times due to the overhead of creating indirect descriptors. Instead, use it only after we're below a configurable offset. Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/block/virtio_blk.c | 4 ++++ drivers/char/hw_random/virtio-rng.c | 4 ++++ drivers/char/virtio_console.c | 4 ++++ drivers/net/virtio_net.c | 4 ++++ drivers/virtio/virtio_balloon.c | 4 ++++ drivers/virtio/virtio_ring.c | 21 +...

...SC is enabled we will use indirect descriptors even if we have plenty of space in the ring. This means that we take a performance hit at all times due to the overhead of creating indirect descriptors. Instead, use it only after we're below a configurable offset. Signed-off-by: Sasha Levin <levinsasha928 at gmail.com> --- drivers/block/virtio_blk.c | 4 ++++ drivers/char/hw_random/virtio-rng.c | 4 ++++ drivers/char/virtio_console.c | 4 ++++ drivers/net/virtio_net.c | 4 ++++ drivers/virtio/virtio_balloon.c | 4 ++++ drivers/virtio/virtio_ring.c | 21 +...