From: bugzilla-daemon@bugzilla.kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 207147] USB errors: uhci_hcd 0000:01:00.4: swiotlb buffer is full (sz: 8 bytes) ; iommu=off
Date: Tue, 07 Apr 2020 14:01:16 +0000 [thread overview]
Message-ID: <bug-207147-208809-E8q3inMIif@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-207147-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=207147
--- Comment #3 from John.p.donnelly@oracle.com ---
Hi Alan,
wrt to comment 2.
If that is the case that iommu=on is needed on that is fine. I just wanted to
report my observation.
FWIIW - 4.14 Oracle UEK5 kernels and 4.18 Redhat kernels do not require
iommu=on to have the HP iLo devices operate. This is an operational difference
between the 4.x and 5.x kernels.
Our own Oracle servers do not exhibit the same failures as HP Gen9 and Gen10
do. They operation fine regardless of the iommu setting(s).
--
You are receiving this mail because:
You are watching the assignee of the bug.
next prev parent reply other threads:[~2020-04-07 14:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-07 12:55 [Bug 207147] New: USB errors: uhci_hcd 0000:01:00.4: swiotlb buffer is full (sz: 8 bytes) ; iommu=off bugzilla-daemon
2020-04-07 13:41 ` [Bug 207147] " bugzilla-daemon
2020-04-07 14:01 ` bugzilla-daemon [this message]
2020-04-07 14:05 ` bugzilla-daemon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-207147-208809-E8q3inMIif@https.bugzilla.kernel.org/ \
--to=bugzilla-daemon@bugzilla.kernel.org \
--cc=linux-usb@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).