Comment 23 for bug 1913395

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bugproxy (bugproxy) wrote : Comment bridged from LTC Bugzilla

------- Comment From <email address hidden> 2021-02-11 09:37 EDT-------
No problem, I suspected this was the case but wanted to be sure.

So, I've run verification on both focal and groovy using the qemu available in -proposed. With the caveat that for focal I used Frank's kernel build provided in 1907421 as we're still waiting for the backport from upstream stable on that for focal.

On both focal and groovy, I created a guest with a vfio-pci passthrough mlx device on s390x and forced data-transfer workloads that could, prior to this fix, quickly and reliably overrun the DMA space and result in transfer stalls / QEMU error messages. No more errors -- looks good!