On 21/08/17 14:18, Christoph Hellwig wrote: > Can you try the patch below please? > > --- > From d5f59cb7a629de8439b318e1384660e6b56e7dd8 Mon Sep 17 00:00:00 2001 > From: Christoph Hellwig <[email protected]> > Date: Mon, 21 Aug 2017 14:24:11 +0200 > Subject: virtio_pci: fix cpu affinity support > > Commit 0b0f9dc5 ("Revert "virtio_pci: use shared interrupts for > virtqueues"") removed the adjustment of the pre_vectors for the virtio > MSI-X vector allocation which was added in commit fb5e31d9 ("virtio: > allow drivers to request IRQ affinity when creating VQs"). This will > lead to an incorrect assignment of MSI-X vectors, and potential > deadlocks when offlining cpus. > > Signed-off-by: Christoph Hellwig <[email protected]> > Fixes: 0b0f9dc5 ("Revert "virtio_pci: use shared interrupts for virtqueues") > Reported-by: YASUAKI ISHIMATSU <[email protected]>
Just gave it a go on an arm64 VM, and the behaviour seems much saner (the virtio queue affinity now spans the whole system). Tested-by: Marc Zyngier <[email protected]> Thanks, M. -- Jazz is not dead. It just smells funny...
