** Also affects: qemu (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1912777
Title:
KVM_EXIT_MMIO has increased in Qemu4.0.0 when compared to Qemu
** Description changed:
I was able to generate trace dump in Qemu for kvm_run_exit event in both QEMU
2.11.0 and QEMU 4.0.0
From the trace i noticed that the number of KVM_KXIT_MMIO calls has increased
alot and is causing delay in testcase execution.
I executed same testcase from Qemu 2
** Changed in: qemu
Status: New => Opinion
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Title:
KVM_EXIT_MMIO has increased in Qemu4.0.0 when compared to Qemu 2.11.0
To manage notifi
One observation i made was that adding qemu arguments "-nic none"
improved the testcase performance.
Does "-nic none" reduce KVM_EXIT_MMIO ?
Are there any other qemu arguments that can be used to improve qemu
overall performance ?
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Could someone update on this?
** Changed in: qemu
Status: Incomplete => New
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Title:
KVM_EXIT_MMIO has increased in Qemu4.0.0 when compare
The testcase is a rather a very basic one.
Doing a mmap on a pcie device and triggering a read and write operation on the
Virtual Address, which would in-turn trigger transaction requests on the host
device.
I understand that Qemu v4.0 may be and old one, but the issue is that
test case executio
** Information type changed from Private Security to Public Security
** Also affects: ubuntu
Importance: Undecided
Status: New
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Title:
