Bug 1814612

Summary: USB4 enablement in bolt
Product: Red Hat Enterprise Linux 8 Reporter: Christian Kellner <ckellner>
Component: boltAssignee: Christian Kellner <ckellner>
Status: CLOSED ERRATA QA Contact: Fendy Tjahjadi <ftjahjad>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.3CC: ckellner, kbenoit, oliver, rvr, tpopela
Target Milestone: rcKeywords: Rebase
Target Release: 8.0   
Hardware: x86_64   
OS: Unspecified   
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Fixed In Version: bolt-0.9-1.el8 Doc Type: If docs needed, set a value
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Last Closed: 2020-11-04 02:07:47 UTC Type: Bug
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Description Christian Kellner 2020-03-18 11:28:39 UTC 
USB4 is the public specification of Thunderbolt 3 protocol. Besides the kernel level changes ([1]) it also needs bolt to authorize the PCIe tunnels, very much as Thunderbolt 3. It is expected that USB4 hardware is accompanied with an IOMMU based DMA protection which the existing bolt (version 0.8) already supports. But there are additional information, including whether a system is Thunderbolt 3 or USB4 (hardware generation), that needs to be exposed, which require a newer (yet unreleased) bolt. Especially the hardware generation information is important for user facing tools and software like GNOME Settings to properly communicate the hardware information (read: "USB4" strings instead of "Thunderbolt", which could otherwise be confusing). 

[1] https://lore.kernel.org/lkml/20191001113830.13028-1-mika.westerberg@linux.intel.com/
Comment 2 Christian Kellner 2020-06-15 20:30:21 UTC 
Built bolt-0.9-1.el8 (https://brewweb.engineering.redhat.com/brew/buildinfo?buildID=1226118) for bolt 0.9.
Comment 8 errata-xmlrpc 2020-11-04 02:07:47 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (bolt bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2020:4577