iotune or throttle group, after
reverting snapshot, if I login vm, and run fio, I/O performance drops a
lot in both QEMU6 and QEMU8, do anyone know the reason? Any explanation
would be appreciated!
On 2024/3/28 07:32, Chun Feng Wu wrote:
Hi,
I am testing throttle filter chain(multipl
Hi,
I am testing throttle filter chain(multiple throttle-groups on disk)
with the following steps:
1. start guest vm(chained throttle filters applied on disk per
https://github.com/qemu/qemu/blob/master/docs/throttle.txt)
2. take snapshot
3. revert snapshot
after step3, I noticed qemu process
Yes, you’re right, QEMU >=6.0.0 works well, I failed test because I did it on
QEMU 4.2.1
From: Daniel P. Berrangé
Date: Wednesday, March 6, 2024 at 22:43
To: Chun Feng Wu , qemu-devel@nongnu.org
Subject: [EXTERNAL] Re: Does "-object" support structured options now?
On Wed, Mar 0
m-x86_64: -object
{"qom-type":"throttle-group","id":"limits0","limits":{"iops-total":200}}:
Parameter 'id' is missing
Do you know why such error happens?
--
Thanks and Regards,
Wu
From: Daniel P. Berrangé
Date: Monday, March
Hi,
I noticed that throttle-group can be created with “-object”, however, per qemu
doc(https://github.com/qemu/qemu/blob/master/docs/throttle.txt), “-object”
doesn’t support structured options at that moment:
“
A throttle-group can also be created with the -object command line
option but at the
Hi,
I am trying to use “'throttle' block filter” mentioned at
https://github.com/qemu/qemu/blob/master/docs/throttle.txt, however, it seems
not work with the following steps, did I miss or mis-understand anything?
1. In RHEL 8.8, I created one vm
qemu-kvm -m 2048 -drive file=/virt/images/focal
The Trigger Mode field of IOAPIC must match the Trigger Mode in
the IRTE according to VT-d Spec 5.1.5.1.
Signed-off-by: Feng Wu
---
hw/i386/intel_iommu.c | 12
1 file changed, 12 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 28c31a2..f32ad5c 100644
io_regions[x] when handling XEN_PT_BAR_FLAG_UPPER.
Signed-off-by: Feng Wu
---
I cannot test this patch sicne I don't have such a device, if
someone have it, it would be highly appreicated if he can help
to verfiy this patch.
hw/xen/xen_pt_config_init.c | 22 +++---
1 files chang
Define new VFIO data structure for VT-d Posted-Interrupts.
Signed-off-by: Feng Wu
---
linux-headers/linux/kvm.h | 11 +++
1 file changed, 11 insertions(+)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 1937afa..6463b28 100644
--- a/linux-headers/linux/kvm.h
update the IRTE with
the new guest interrupt configuration.
Signed-off-by: Feng Wu
---
hw/misc/vfio.c | 60 ++-
1 files changed, 58 insertions(+), 2 deletions(-)
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index fd318a1..5bdc49c 100644
--- a
Define new VFIO data structure for VT-d Posted-Interrupts.
Signed-off-by: Feng Wu
---
linux-headers/linux/kvm.h | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 1937afa..48edf23 100644
--- a/linux
1->v2:
* Enable this feature based on VFIO mechanism
v2->v3:
* KVM_DEV_VFIO_DEVICE_POSTING_IRQ --> KVM_DEV_VFIO_DEVICE_POST_IRQ
* Add KVM_DEV_VFIO_DEVICE_UPPOST_IRQ attribute in linux header file
Feng Wu (2):
kvm, vfio: Define new VFIO data structure for VT-d Posted-Interrupts.
kvm,
update the IRTE with
the new guest interrupt configuration.
Signed-off-by: Feng Wu
---
hw/misc/vfio.c | 60 --
1 file changed, 58 insertions(+), 2 deletions(-)
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index fd318a1..5bdc49c 100644
--- a
gt;v2:
Enable this feature based on VFIO mechanism
v2->v3:
KVM_DEV_VFIO_DEVICE_POSTING_IRQ --> KVM_DEV_VFIO_DEVICE_POST_IRQ
Feng Wu (2):
kvm, vfio: Define new VFIO data structure for VT-d Posted-Interrupts.
kvm, vfio: Update VT-d Posted-Interrupts related information
hw/misc/
gt;v2:
Enable this feature based on VFIO mechanism
Feng Wu (2):
kvm, vfio: Define new VFIO data structure for VT-d Posted-Interrupts.
kvm, vfio: Update VT-d Posted-Interrupts related information
hw/misc/vfio.c| 60 +++-
linux-headers/
update the IRTE with
the new guest interrupt configuration.
Signed-off-by: Feng Wu
---
hw/misc/vfio.c | 60 ++-
1 files changed, 58 insertions(+), 2 deletions(-)
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index fd318a1..3e88358 100644
--- a
Define new VFIO data structure for VT-d Posted-Interrupts.
Signed-off-by: Feng Wu
---
linux-headers/linux/kvm.h | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 1937afa..2253d01 100644
--- a/linux
associated IRTE according to VT-d PI Spec.
Feng Wu (2):
linux-headers: Update KVM headers
x86: Update VT-d Posted-Interrupts related information
hw/misc/vfio.c| 60 +++-
linux-headers/linux/kvm.h | 10 +++
2 files changed, 68 insertions
Sync-up KVM related Linux headers from KVM tree using
scripts/update-linux-header.sh
New VFIO attribute and data structure for VT-d Posted-Interrupts.
Signed-off-by: Feng Wu
---
linux-headers/linux/kvm.h | 10 ++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/linux
update the IRTE with
the new guest interrupt configuration.
Signed-off-by: Feng Wu
---
hw/misc/vfio.c | 60 ++-
1 files changed, 58 insertions(+), 2 deletions(-)
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index fd318a1..d453db4 100644
--- a
KVM side.
You can find the VT-d Posted-Interrtups Spec. in the following URL:
http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/vt-directed-io-spec.html
Feng Wu (1):
x86: Update VT-d Posted-Interrupts related information
hw/i386/kvm/pci-assign.c | 24
update the IRTE with
the new guest interrtup configuration.
Signed-off-by: Feng Wu
---
hw/i386/kvm/pci-assign.c | 24
linux-headers/linux/kvm.h |2 ++
target-i386/kvm.c |5 +
target-i386/kvm_i386.h|1 +
4 files changed, 32 insertions(+), 0
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