Page MenuHomeFreeBSD
Differential D33739

bhyve: Map the right BAR in init_msix_table()
ClosedPublic
Actions

Authored by markj on Jan 4 2022, 7:11 PM.
Tags
None
Referenced Files
Unknown Object (File)
Sun, Feb 2, 3:04 AM
Unknown Object (File)
Sun, Jan 26, 8:23 AM
Unknown Object (File)
Fri, Jan 10, 10:58 AM
Unknown Object (File)
Dec 5 2024, 10:48 PM
Unknown Object (File)
Dec 2 2024, 11:50 PM
Unknown Object (File)
Nov 22 2024, 4:05 PM
Unknown Object (File)
Nov 21 2024, 2:30 PM
Unknown Object (File)
Nov 18 2024, 8:16 AM
View All 87 Files
Subscribers
bcran
imp
rgrimes

Details

Reviewers
jhb
Group Reviewers
bhyve
Commits
rG4558c11f1b4d: bhyve: Correct unmapping of the MSI-X table BAR
rG76b45e688ae8: bhyve: Map the right BAR in init_msix_table()
Summary

The PBA and MSI-X table can reside in different BARs.

Reported by: Andy Fiddaman <andy@omniosce.org>
Fixes: 7fa233534736 ("bhyve: Map the MSI-X table unconditionally for passthrough")
MFC after: 3 days

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 43700
Build 40588: arc lint + arc unit

Event Timeline

markj created this revision.Jan 4 2022, 7:11 PM
Herald added a reviewer: bhyve. · View Herald TranscriptJan 4 2022, 7:11 PM
Herald added subscribers: bcran, rgrimes, imp. · View Herald Transcript
markj requested review of this revision.Jan 4 2022, 7:11 PM
Harbormaster completed remote builds in B43700: Diff 100933.Jan 4 2022, 7:11 PM
markj mentioned this in D32359: bhyve: Map the MSI-X table unconditionally when passthrough is enabled.Jan 4 2022, 7:13 PM
markj updated this revision to Diff 100944.Jan 4 2022, 9:32 PM

Fix a second bug, also reported by Andy:

If the last page containing the table is not also the last page
of the BAR, then we would call mprotect(PROT_NONE) on the wrong
portion of the mapping.

Harbormaster completed remote builds in B43709: Diff 100944.Jan 4 2022, 9:32 PM
jhb accepted this revision.Jan 4 2022, 10:35 PM
This revision is now accepted and ready to land.Jan 4 2022, 10:35 PM
Closed by commit rG76b45e688ae8: bhyve: Map the right BAR in init_msix_table() (authored by markj). · Explain WhyJan 5 2022, 3:12 PM
This revision was automatically updated to reflect the committed changes.
markj added a commit: rG76b45e688ae8: bhyve: Map the right BAR in init_msix_table().
markj added a commit: rG4558c11f1b4d: bhyve: Correct unmapping of the MSI-X table BAR.

Revision Contents
Changeset List

PathSize
usr.sbin/
bhyve/
2 lines

Diff 100933

View Options

usr.sbin/bhyve/pci_passthru.c

Loading...