Differential D5919

Handle PBA that shares a page with MSI-X table for passthrough devices.
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Authored by jhb on Apr 11 2016, 9:49 PM.

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grehan
neel

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rS297932: Handle PBA that shares a page with MSI-X table for passthrough devices.

Summary

Handle PBA that shares a page with MSI-X table for passthrough devices.

If the PBA shares a page with the MSI-X table, map the shared page via
/dev/mem and emulate accesses to the portion of the PBA in the shared
page by accessing the mapped page.

Test Plan

Pass through a device whose PBA shares a page with the MSI-X table to a bhyve guest. Note that the driver for this device doesn't use the PBA, so I haven't actually tested PBA access.

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Repository

rS FreeBSD src repository - subversion

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Event Timeline

jhb updated this revision to Diff 15090.Apr 11 2016, 9:49 PM

jhb retitled this revision from to Handle PBA that shares a page with MSI-X table for passthrough devices..

jhb updated this object.

jhb edited the test plan for this revision. (Show Details)

jhb added reviewers: grehan, neel.

Herald added a subscriber: imp. · View Herald TranscriptApr 11 2016, 9:49 PM

4096 should eventually be PAGE_SIZE but you inherited that :)

This revision is now accepted and ready to land.Apr 13 2016, 5:03 AM

Closed by commit rS297932: Handle PBA that shares a page with MSI-X table for passthrough devices. (authored by jhb). · Explain WhyApr 13 2016, 6:39 PM

This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Path

Size

head/

usr.sbin/

bhyve/

2 lines

117 lines

Diff 15169

head/usr.sbin/bhyve/pci_emul.h

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head/usr.sbin/bhyve/pci_passthru.c

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