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Skuhra" To: Andrew Turner 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 In-Reply-To: <69a71c75.40215.43f39fc6@gitrepo.freebsd.org> References: <69a71c75.40215.43f39fc6@gitrepo.freebsd.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/31.0 Mule/6.0 List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-2.60 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.996]; R_SPF_ALLOW(-0.20)[+ip4:103.168.172.128/27]; R_DKIM_ALLOW(-0.20)[gojira.at:s=fm1,messagingengine.com:s=fm1]; RCVD_IN_DNSWL_LOW(-0.10)[103.168.172.149:from]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; ASN(0.00)[asn:151847, ipnet:103.168.172.0/24, country:AU]; DWL_DNSWL_NONE(0.00)[messagingengine.com:dkim]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; DMARC_NA(0.00)[gojira.at]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; RCVD_TLS_LAST(0.00)[]; MLMMJ_DEST(0.00)[dev-commits-src-all@FreeBSD.org,dev-commits-src-main@FreeBSD.org]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gojira.at:+,messagingengine.com:+] X-Rspamd-Queue-Id: 4fTS8B4pJ4z40vD X-Spamd-Bar: -- 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 > AuthorDate: 2026-03-03 16:08:11 +0000 > Commit: Andrew Turner > 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.