Date: Sun, 08 Mar 2026 18:39:50 +0100 From: "Herbert J. Skuhra" <herbert@gojira.at> To: Andrew Turner <andrew@FreeBSD.org> Cc: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: Re: git: c499ad6f997c - main - virtio: Use bus_dma for ring and indirect buffer allocations Message-ID: <87ecludxuh.wl-herbert@gojira.at> In-Reply-To: <69a71c75.40215.43f39fc6@gitrepo.freebsd.org>
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On Tue, 03 Mar 2026 18:37:57 +0100, Andrew Turner wrote: > > The branch main has been updated by andrew: > > URL: https://cgit.FreeBSD.org/src/commit/?id=c499ad6f997c8c5f61c88925e6d1e826d0c0f6c4 > > commit c499ad6f997c8c5f61c88925e6d1e826d0c0f6c4 > Author: Sarah Walker <sarah.walker2@arm.com> > AuthorDate: 2026-03-03 16:08:11 +0000 > Commit: Andrew Turner <andrew@FreeBSD.org> > CommitDate: 2026-03-03 16:29:15 +0000 > > virtio: Use bus_dma for ring and indirect buffer allocations > > While the majority of virtio platforms will be fully coherent, some may > require cache maintenance or other specific device memory handling (eg for > secure partitioning). Using bus_dma allows for these usecases. > > The virtio buffers are marked as coherent; this should ensure that sync > calls are no-ops in the common cases. > > Reviewed by: andrew > Sponsored by: Arm Ltd > Differential Revision: https://reviews.freebsd.org/D54959 > --- > sys/dev/virtio/virtio_ring.h | 27 ++++-- > sys/dev/virtio/virtqueue.c | 216 +++++++++++++++++++++++++++++++++++++------ > 2 files changed, 209 insertions(+), 34 deletions(-) After this change I see a lot of "kernel: vtnet0: watchdog timeout on queue xx" errors on amd64 (arm64 seems to be OK). Reverting this commit resolves the issue.home | help
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