similar to: [PATCH RFC 0/2] virtio-pci: polling mode support

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. I see nice performance improvements: e.g. from 12 to 18 Gbit/s host to guest with netperf, but did not spend a lot of time testing performance. I hope others will try this out and report. Note: there

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

OK, here's a patch that implements the virtio spec update that I sent earlier. It supercedes the PUBLISH_USED_IDX patches I sent out earlier. Support is added in both userspace and vhost-net. If you see issues or are just curious, you can turn the new feature off. For example: -global virtio-net-pci.event_idx=on -global virtio-blk-pci.event_idx=off Also, it's possible to try both

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

From: Nicholas Bellinger <nab at linux-iscsi.org> Hi Paolo, Stefan, & QEMU folks, The following is the second RFC series for vhost-scsi patches against mainline QEMU v1.1.0. The series is available from the following working branch: git://git.kernel.org/pub/scm/virt/kvm/nab/qemu-kvm.git vhost-scsi-merge Apologies for the delayed follow-up on this series. The changes detailed

From: Nicholas Bellinger <nab at linux-iscsi.org> Hi Paolo, Stefan, & QEMU folks, The following is the second RFC series for vhost-scsi patches against mainline QEMU v1.1.0. The series is available from the following working branch: git://git.kernel.org/pub/scm/virt/kvm/nab/qemu-kvm.git vhost-scsi-merge Apologies for the delayed follow-up on this series. The changes detailed

One VM only has 128 msix interrupt, virtio-config interrupt has less workload. This patch shares one normal interrupt for configuration between virtio devices. Signed-off-by: Amos Kong <akong at redhat.com> --- drivers/virtio/virtio_pci.c | 41 ++++++++++++++++------------------------- 1 file changed, 16 insertions(+), 25 deletions(-) diff --git a/drivers/virtio/virtio_pci.c

One VM only has 128 msix interrupt, virtio-config interrupt has less workload. This patch shares one normal interrupt for configuration between virtio devices. Signed-off-by: Amos Kong <akong at redhat.com> --- drivers/virtio/virtio_pci.c | 41 ++++++++++++++++------------------------- 1 file changed, 16 insertions(+), 25 deletions(-) diff --git a/drivers/virtio/virtio_pci.c

On Thu, Jan 15, 2015 at 10:18:18PM +0100, Gerd Hoffmann wrote: > Hi, > > > QEMU side is still undergoing polishing, but is already testable. > > Looked art the qemu side for now, commenting here due to qemu patches > not being posted to the list yet (guess that is at least partly already > on your todo list): Absolutely. > * Both legacy and modern should be

On Thu, Jan 15, 2015 at 10:18:18PM +0100, Gerd Hoffmann wrote: > Hi, > > > QEMU side is still undergoing polishing, but is already testable. > > Looked art the qemu side for now, commenting here due to qemu patches > not being posted to the list yet (guess that is at least partly already > on your todo list): Absolutely. > * Both legacy and modern should be

The OpRegion shouldn''t be mapped 1:1 because the address in the host can''t be used in the guest directly. This patch traps read and write access to the opregion of the Intel GPU config space (offset 0xfc). To work correctly this patch needs a change in hvmloader. HVMloader will allocate 2 pages for the OpRegion and write this address on the config space of the Intel GPU. Qemu

Add routines to manage PCI capability list. First user will be MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- hw/pci.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++------ hw/pci.h | 18 +++++++++++- 2 files changed, 106 insertions(+), 10 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 5dcfb4e..6bc3819 100644 --- a/hw/pci.c +++ b/hw/pci.c @@

Add routines to manage PCI capability list. First user will be MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- hw/pci.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++------ hw/pci.h | 18 +++++++++++- 2 files changed, 106 insertions(+), 10 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 5dcfb4e..6bc3819 100644 --- a/hw/pci.c +++ b/hw/pci.c @@

Add routines to manage PCI capability list. First user will be MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- hw/pci.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++------ hw/pci.h | 18 +++++++++++- 2 files changed, 106 insertions(+), 10 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 361d741..ed011b5 100644 --- a/hw/pci.c +++ b/hw/pci.c @@

Add routines to manage PCI capability list. First user will be MSI-X. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- hw/pci.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++------ hw/pci.h | 18 +++++++++++- 2 files changed, 106 insertions(+), 10 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 361d741..ed011b5 100644 --- a/hw/pci.c +++ b/hw/pci.c @@

Implement a simple Xen APIC module and use it to deliver MSI/MSIX for Xen HVM guests.

This adds support for new config, and is designed to work with the new layout code in Rusty's new layout branch. At the moment all fields are in the same memory BAR (bar 2). This will be used to test performance and compare memory, io and hypercall latency. Compiles but does not work yet. Migration isn't handled yet. It's not clear what do queue_enable/queue_disable fields do, not

This adds support for new config, and is designed to work with the new layout code in Rusty's new layout branch. At the moment all fields are in the same memory BAR (bar 2). This will be used to test performance and compare memory, io and hypercall latency. Compiles but does not work yet. Migration isn't handled yet. It's not clear what do queue_enable/queue_disable fields do, not