From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported
Date: Fri, 24 Nov 2023 15:30:16 +0000 [thread overview]
Message-ID: <bug-215740-208809-hKMHIMcWVd@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-215740-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=215740
--- Comment #24 from Alan Stern (stern@rowland.harvard.edu) ---
Sorry, submitted the update too soon. I meant to add:
Incidentally, the check for overlapping DMA mappings does not take into account
the possibility that a mapping can extend over several cache lines. Maybe this
wasn't deemed important enough to check for.
But in any case, it seems clear that on x86 there shouldn't be anything wrong
with allowing several different mappings to refer to the same cache line.
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next prev parent reply other threads:[~2023-11-24 15:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-24 15:18 [Bug 215740] New: kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported bugzilla-daemon
2022-03-31 6:52 ` [Bug 215740] " bugzilla-daemon
2022-03-31 6:54 ` bugzilla-daemon
2022-03-31 7:41 ` [Bug 215740] New: " Thorsten Leemhuis
2022-04-05 5:19 ` Christoph Hellwig
2022-03-31 7:41 ` [Bug 215740] " bugzilla-daemon
2022-03-31 7:54 ` bugzilla-daemon
2022-04-05 5:19 ` bugzilla-daemon
2022-05-04 8:10 ` bugzilla-daemon
2022-05-04 10:17 ` bugzilla-daemon
2023-10-10 20:19 ` bugzilla-daemon
2023-11-12 20:46 ` bugzilla-daemon
2023-11-13 22:11 ` bugzilla-daemon
2023-11-14 3:25 ` bugzilla-daemon
2023-11-15 20:24 ` bugzilla-daemon
2023-11-16 2:19 ` bugzilla-daemon
2023-11-17 22:13 ` bugzilla-daemon
2023-11-19 16:47 ` bugzilla-daemon
2023-11-19 21:12 ` bugzilla-daemon
2023-11-20 19:43 ` bugzilla-daemon
2023-11-21 19:31 ` bugzilla-daemon
2023-11-21 20:51 ` bugzilla-daemon
2023-11-23 21:27 ` bugzilla-daemon
2023-11-24 12:02 ` bugzilla-daemon
2023-11-24 12:07 ` bugzilla-daemon
2023-11-24 15:27 ` bugzilla-daemon
2023-11-24 15:30 ` bugzilla-daemon [this message]
2023-11-24 15:40 ` bugzilla-daemon
2023-11-24 15:50 ` bugzilla-daemon
2023-11-24 16:09 ` bugzilla-daemon
2023-11-24 16:21 ` bugzilla-daemon
2023-11-24 21:05 ` bugzilla-daemon
2023-11-24 22:22 ` bugzilla-daemon
2023-11-25 2:03 ` bugzilla-daemon
2023-11-25 20:50 ` bugzilla-daemon
2023-11-25 21:17 ` bugzilla-daemon
2023-11-25 22:15 ` bugzilla-daemon
2023-11-28 19:04 ` bugzilla-daemon
2023-11-28 21:28 ` bugzilla-daemon
2023-11-29 15:44 ` bugzilla-daemon
2023-11-30 19:35 ` bugzilla-daemon
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