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Differential D53469

bhyve/virtio-scsi: preallocate all I/O requests
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Authored by rosenfeld_grumpf.hope-2000.org on Thu, Oct 30, 7:38 AM.
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Reviewers
jhb
corvink
markj
Group Reviewers
bhyve
Summary

By preallocating all I/O requests on all queues, we can take most
allocations out of the hot I/O code paths and simplify the code
significantly. While here, make sure we check all allocations for
success and make sure to handle failures gracefully.

Additionally, check for I/O request validity as early as possible,
and return illegal requests immediately.

Diff Detail

Repository
rG FreeBSD src repository
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Unit
Tests Skipped
Build Status
Buildable 68273
Build 65156: arc lint + arc unit

Revision Contents
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PathSize
usr.sbin/
bhyve/
387 lines

Diff 165411

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usr.sbin/bhyve/pci_virtio_scsi.c

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