From: Longpeng
When updating ioeventfds, we need to iterate all address spaces and
iterate all flat ranges of each address space. There is so much
redundant process that a FlatView would be iterated for so many times
during one commit (memory_region_transaction_commit).
We can mark a FlatView
From: Longpeng
All unmasked vectors will be setup in msix_set_vector_notifiers(), which
is a time-consuming operation because each vector need to be submit to
KVM once. It's even worse if the VM has several devices and each devices
has dozens of vectors.
We can defer and commit the vectors in
From: Longpeng
The kvm_irqchip_commit_routes() is a time-intensive operation, it needs
scan and update all irqfds that are already assigned during each invocation,
so more vectors means need more time to process them. For virtio-pci, we
can just submit once when enabling vectors of a virtio-pci
From: Longpeng
This patchset optimizes the time-consuming operation in
virtio_pci_set_guest_notifier,
especially for the vhost-vdpa migration, the time spend on set_guest_notifier
can
reduce 87% in some cases.
Longpeng (Mike) (3):
virtio-pci: submit msi route changes in batch
kvm-irqchip
From: Longpeng
The KVMRouteChange API is added by commit 9568690868e ("kvm-irqchip:
introduce new API to support route change"). We can also apply it on
kvm_irqchip_update_msi_route(), there are no functional changes and
we can optimize the virtio-pci core base on this change in the next
patch.
From: Longpeng
This allows the vhost-vdpa device to batch the setup of all its MRs of
host notifiers.
This significantly reduces the device starting time, e.g. the time spend
on setup the host notifier MRs reduce from 423ms to 32ms for a VM with
64 vCPUs and 3 vhost-vDPA generic devices
From: Longpeng
This allows the vhost device to batch the setup of all its host notifiers.
This significantly reduces the device starting time, e.g. the time spend
on enabling notifiers reduce from 376ms to 9.1ms for a VM with 64 vCPUs
and 3 vhost-vDPA generic devices (vdpa_sim_blk, 64vq per
From: Longpeng
Simplify the error path in vhost_dev_enable_notifiers by using
vhost_dev_disable_notifiers directly.
Signed-off-by: Longpeng
---
hw/virtio/vhost.c | 20
1 file changed, 4 insertions(+), 16 deletions(-)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
From: Longpeng
Changes v3->v2:
- cleanup the code [Philippe]
Changes v2->v1:
Patch-1:
- remove vq_init_count [Jason]
Patch-2:
- new added. [Jason]
v1: https://www.mail-archive.com/qemu-devel@nongnu.org/msg922499.html
Longpeng (Mike) (3):
vhost: simplify vhost_dev_enable_not
From: Longpeng
In commit a585fad26b ("vdpa: request iova_range only once") we remove
GET_IOVA_RANGE form vhost_vdpa_init, the generic vdpa device will start
without iova_range populated, so the device won't work. Let's call
GET_IOVA_RANGE ioctl explicitly.
Fixes: a585fad26b2e6ccc ("vdpa:
From: Longpeng
We should stop if the GET_IOVA_RANGE ioctl failed.
Signed-off-by: Longpeng
---
net/vhost-vdpa.c | 8 +++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index ffdc435d19..e65023d013 100644
--- a/net/vhost-vdpa.c
+++
f vdpa/net.
Longpeng (Mike) (2):
vdpa-dev: get iova range explicitly
vdpa: harden the error path if get_iova_range failed
hw/virtio/vdpa-dev.c | 9 +
hw/virtio/vhost-vdpa.c | 7 +++
include/hw/virtio/vhost-vdpa.h | 2 ++
net/vhost-vdpa.c
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
From: Longpeng
The generic vDPA device doesn't support migration currently, so
mark it as unmigratable temporarily.
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/vdpa-dev.c
[Stefan]
- fix the misleading description of 'dc->desc' [Stefano]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (5):
virtio: get class_id and pci device id by the virtio id
From: Longpeng
Signed-off-by: Longpeng
---
.../devices/vhost-vdpa-generic-device.rst | 68 +++
1 file changed, 68 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-generic-device.rst
diff --git a/docs/system/devices/vhost-vdpa-generic-device.rst
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
This allows the vhost device to batch the setup of all its host notifiers.
This significantly reduces the device starting time, e.g. the time spend
on enabling notifiers reduce from 376ms to 9.1ms for a VM with 64 vCPUs
and 3 vhost-vDPA generic devices[1] (64vq per device)
[1]
From: Longpeng
This allows the vhost-vdpa device to batch the setup of all its MRs of
host notifiers.
This significantly reduces the device starting time, e.g. the time spend
on setup the host notifier MRs reduce from 423ms to 32ms for a VM with
64 vCPUs and 3 vhost-vDPA generic devices[1]
From: Longpeng
Changes v2->v1:
Patch-1:
- remove vq_init_count [Jason]
Patch-2:
- new added. [Jason]
v1: https://www.mail-archive.com/qemu-devel@nongnu.org/msg922499.html
Longpeng (Mike) (2):
vhost: configure all host notifiers in a single MR transaction
vdpa: commit all h
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
The generic vDPA device doesn't support migration currently, so
mark it as unmigratable temporarily.
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/vdpa-dev.c
From: Longpeng
Signed-off-by: Longpeng
---
.../devices/vhost-vdpa-generic-device.rst | 66 +++
1 file changed, 66 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-generic-device.rst
diff --git a/docs/system/devices/vhost-vdpa-generic-device.rst
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
tch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (5):
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
vdpa-dev: mark the de
From: Longpeng
This allows the vhost device to batch the setup of all its host notifiers.
This significantly reduces the device starting time, e.g. the vhost-vDPA
generic device [1] start time reduce from 376ms to 9.1ms for a VM with
64 vCPUs and 3 vDPA device(64vq per device).
[1]
From: Longpeng
The generic vDPA device doesn't support migration currently, so
mark it as unmigratable temporarily.
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/vdpa-dev.c
tch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (5):
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
vdpa-dev: mark the device as unmigratable
docs: Add generic vhost-vd
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Signed-off-by: Longpeng
---
.../devices/vhost-vdpa-generic-device.rst | 46 +++
1 file changed, 46 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-generic-device.rst
diff --git a/docs/system/devices/vhost-vdpa-generic-device.rst
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
From: Longpeng
The generic vDPA device doesn't support migration currently, so
mark it as unmigratable temporarily.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index 2885d06cbe..62d83d3423
From: Longpeng
Signed-off-by: Longpeng
---
docs/system/devices/vhost-vdpa-device.rst | 43 +++
1 file changed, 43 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-device.rst
diff --git a/docs/system/devices/vhost-vdpa-device.rst
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
- fix the misleading description of 'dc->desc' [Stefano]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (5):
virtio: get class_id and pci device id by the virtio id
vdpa
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
Signed-off-by: Longpeng
---
docs/system/devices/vhost-vdpa-device.rst | 43 +++
1 file changed, 43 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-device.rst
diff --git a/docs/system/devices/vhost-vdpa-device.rst
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
o]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
docs
From: Longpeng
Signed-off-by: Longpeng
---
docs/system/devices/vhost-vdpa-device.rst | 43 +++
1 file changed, 43 insertions(+)
create mode 100644 docs/system/devices/vhost-vdpa-device.rst
diff --git a/docs/system/devices/vhost-vdpa-device.rst
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
o]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
docs
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Reviewed-by: Stefano Garzarella
Acked-by: Jason Wang
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 88
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
linux-headers: Update headers to Linux 5.18-rc6
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
hw/virtio/Kconfig|
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
hw/virtio/meson.build| 1 +
From: Longpeng
Update headers to 5.18-rc6. I need latest vhost changes.
Signed-off-by: Longpeng
---
linux-headers/linux/vhost.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
---
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Reviewed-by: Stefano Garzarella
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 102
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 101
From: Longpeng
Update headers to 5.18-rc6. I need latest vhost changes.
Signed-off-by: Longpeng
---
linux-headers/linux/vhost.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
---
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
hw/virtio/meson.build| 1 +
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
linux-headers: Update headers to Linux 5.18-rc6
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
hw/virtio/Kconfig
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 77
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 101 +++
2 files changed, 102
From: Longpeng
Update headers to 5.18-rc6. I need latest vhost changes.
Signed-off-by: Longpeng
---
linux-headers/linux/vhost.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
---
to make the code clearer [Stefan]
- fix the misleading description of 'dc->desc' [Stefano]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
linux-headers: Update
From: Longpeng
Supports vdpa-dev, we can use the deivce directly:
-M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
hw/virtio/meson.build| 1 +
From: Longpeng
Supports vdpa-dev.
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev.c | 385 +++
include/hw/virtio/vdpa-dev.h | 43
4 files changed, 434 insertions(+)
create
From: Longpeng
Supports vdpa-dev-pci, we can use the device as follow:
-device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
Signed-off-by: Longpeng
---
hw/virtio/meson.build| 1 +
hw/virtio/vdpa-dev-pci.c | 101 +++
2 files changed, 102
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 77
- free s->dev.vqs [Stefano]
Longpeng (Mike) (4):
linux-headers: Update headers to Linux 5.18-rc6
virtio: get class_id and pci device id by the virtio id
vdpa: add vdpa-dev support
vdpa: add vdpa-dev-pci support
hw/virtio/Kconfig| 5 +
hw/virtio/meson.build| 2
From: Longpeng
Update headers to 5.18-rc6. I need latest vhost changes.
Signed-off-by: Longpeng
---
linux-headers/linux/vhost.h | 7 +++
1 file changed, 7 insertions(+)
diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h
index c998860d7b..5d99e7c242 100644
---
Signed-off-by: Longpeng(Mike)
---
hw/vfio/pci.c | 20 +++-
1 file changed, 3 insertions(+), 17 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 6f49e71cd4..6801391cf6 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -572,9 +572,6 @@ static void vfio_msix_vector_release
It's unnecessary to test against the specific return value of
VFIO_DEVICE_SET_IRQS, since any positive return is an error
indicating the number of vectors we should retry with.
Signed-off-by: Longpeng(Mike)
---
hw/vfio/pci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git
Use vfio_msi_disable_common to simplify the error handling
in vfio_msi_enable.
Signed-off-by: Longpeng(Mike)
---
hw/vfio/pci.c | 16 ++--
1 file changed, 2 insertions(+), 14 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index a1916e2e36..6f49e71cd4 100644
--- a/hw/vfio
Move re-enabling INTX out, and the callers should decide to
re-enable it or not.
Signed-off-by: Longpeng(Mike)
---
hw/vfio/pci.c | 17 +++--
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 1433989aeb..a1916e2e36 100644
--- a/hw/vfio
rrors [Alex, Philippe]
- split fixups and cleanups into separate patches [Alex, Philippe]
- introduce kvm_irqchip_add_deferred_msi_route to
minimize code changes[Alex]
- enable the optimization in msi setup path[Alex]
Longpeng (Mike) (5):
vfio: simplify the conditional statements in vfio_ms
t already assigned and need to process in this
round.
The optimization can be applied to msi type too.
Signed-off-by: Longpeng(Mike)
---
hw/vfio/pci.c | 130 +-
hw/vfio/pci.h | 2 +
2 files changed, 99 insertions(+), 33 deletions(-)
diff --git a/hw/vfi
From: Longpeng
Implements the .unrealize interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 18 +-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index 4defe6c33d..1713818bc3 100644
---
From: Longpeng
Implements the .realize interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev-pci.c | 18 -
hw/virtio/vdpa-dev.c | 132 +++
include/hw/virtio/vdpa-dev.h | 10 +++
3 files changed, 159 insertions(+), 1 deletion(-)
diff --git
misleading description of 'dc->desc' [Stefano]
Patch 5:
- check returned number of virtqueues [Stefan]
Patch 6:
- init s->num_queues [Stefano]
- free s->dev.vqs [Stefano]
Longpeng (Mike) (10):
virtio: get class_id and pci device id by the virtio id
update linux
From: Longpeng
Implements the .set_status interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 100 ++-
1 file changed, 99 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index 9536982061..c6847df7aa
From: Longpeng
Implements the .get_features interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index f28d3ed5f9..9536982061 100644
--- a/hw/virtio/vdpa-dev.c
+++
From: Longpeng
The generic vDPA device doesn't support migration currently, so
mark it as unmigratable temporarily.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index c6847df7aa..5224617574
From: Longpeng
Update linux headers to 5.xxx (kernel part is not merged yet)
To support generic vdpa deivce, we need add the following ioctls:
- VHOST_VDPA_GET_CONFIG_SIZE: get the configuration size.
- VHOST_VDPA_GET_VQS_COUNT: get the count of supported virtqueues.
Signed-off-by: Longpeng
From: Longpeng
Add the infrastructure of vdpa-dev (the generic vDPA device), we
can add a generic vDPA device as follow:
-device vhost-vdpa-device-pci,vdpa-dev=/dev/vhost-vdpa-X
Signed-off-by: Longpeng
---
hw/virtio/Kconfig| 5 +++
hw/virtio/meson.build| 2 ++
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 77
From: Longpeng
Implements the .get_config and .set_config interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index 1713818bc3..f28d3ed5f9 100644
---
From: Longpeng
Implements the .instance_init and the .class_init interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev-pci.c | 22 +++-
hw/virtio/vdpa-dev.c | 69 ++--
include/hw/virtio/vdpa-dev.h | 3 ++
3 files changed, 91
From: Longpeng
We invoke the kvm_irqchip_commit_routes() for each addition to MSI route
table, which is not efficient if we are adding lots of routes in some cases.
This patch lets callers invoke the kvm_irqchip_commit_routes(), so the
callers can decide how to optimize.
[1]
From: Longpeng
Paolo suggested adding the new API to support route changes [1]. We should
invoke
kvm_irqchip_begin_route_changes() before changing the routes, increasing the
KVMRouteChange.changes if the routes are changed, and commit the changes at
last.
[1]
From: Longpeng
This patchset moves the call to kvm_irqchip_commit_routes() out of
kvm_irqchip_add_msi_route(). An optimization of vfio migration [1]
depends on this changes.
[1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg00968.html
Longpeng (Mike) (2):
kvm-irqchip: introduce
Now, qemu-sem is based on the pthread_cond only, we can use
qemu-cond and qemu-mutex to make the code neater and the mutex
trace can be supported in qemu-sem naturally.
Signed-off-by: Longpeng(Mike)
---
include/qemu/thread-posix.h | 5 +--
util/qemu-thread-posix.c| 103
of the realtime clock, this could
make sure we would not be affected by the system time anymore.
Changes v1(RFC) -> v2:
Patch 2:
- clean the code [Paolo]
- use pthread_condattr_setclock when initializing qemu-cond. [Paolo]
Patch 3:
- new added, make the qemu-sem code neater. [Longpeng]
Longpeng (M
remove CONFIG_SEM_TIMEDWAIT in this way? No, because some systems
(e.g. mac os) mark the sem_xxx API as deprecated.
So maybe remove the usage of POSIX semaphore and turn to use the
pthread variant for all systems looks better.
Signed-off-by: Longpeng(Mike)
---
include/qemu/thread-posix.h | 4
Use CLOCK_MONOTONIC, so the timeout isn't affected by changes to
the system time. It depends on the pthread_condattr_setclock(),
while some systems(e.g. mac os) does not support it, so the behavior
won't change in these systems.
Signed-off-by: Longpeng(Mike)
---
meson.build | 11
of the realtime clock, this could
make sure we would not be affected by the system time anymore.
Longpeng (Mike) (2):
sem-posix: remove the posix semaphore support
sem-posix: use monotonic clock instead
include/qemu/thread-posix.h | 5 +--
meson.build | 12 ++-
util/qemu-thread
Use CLOCK_MONOTONIC, so the timeout isn't affected by changes
to the system time. It depends on the pthread_condattr_setclock(),
while some systems(e.g. mac os) do not support it, the behavior
won't change in these systems.
Signed-off-by: Longpeng(Mike)
---
include/qemu/thread-posix.h | 1
remove CONFIG_SEM_TIMEDWAIT in this way? No, because some systems
(e.g. mac os) mark the sem_xxx API as deprecated.
So maybe remove the usage of POSIX semaphore and turn to use the
pthread variant for all systems looks better.
Signed-off-by: Longpeng(Mike)
---
include/qemu/thread-posix.h | 4
From: Longpeng
Implements the .set_status interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 100 ++-
1 file changed, 99 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index 7bf07fef9b..99722c88a1
From: Longpeng
Add helpers to get the "Transitional PCI Device ID" and "class_id"
of the device specified by the "Virtio Device ID".
These helpers will be used to build the generic vDPA device later.
Signed-off-by: Longpeng
---
hw/virtio/virtio-pci.c | 77
From: Longpeng
Implements the .realize interface.
Signed-off-by: Longpeng
---
hw/virtio/vdpa-dev.c | 101 +++
include/hw/virtio/vdpa-dev.h | 8 +++
2 files changed, 109 insertions(+)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index
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