From: Christoph Hellwig <hch@infradead.org>
To: Balbir Singh <balbirs@nvidia.com>
Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Robin Murphy" <robin.murphy@arm.com>,
"Christian König" <christian.koenig@amd.com>,
"Ingo Molnar" <mingo@kernel.org>, "Kees Cook" <kees@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Peter Zijlstra" <peterz@infradead.org>,
"Andy Lutomirski" <luto@kernel.org>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Bert Karwatzki" <spasswolf@web.de>,
"Christoph Hellwig" <hch@infradead.org>
Subject: Re: [PATCH] dma/mapping.c: dev_dbg support for dma_addressing_limited
Date: Mon, 14 Apr 2025 04:14:55 -0700 [thread overview]
Message-ID: <Z_zuL6tIjeTLTNKK@infradead.org> (raw)
In-Reply-To: <20250414110647.3294017-1-balbirs@nvidia.com>
On Mon, Apr 14, 2025 at 09:06:46PM +1000, Balbir Singh wrote:
> + dev_dbg(dev, "might have lower perf due to bounce buffering\n");
I don't think that's a good message. Report the actual observation,
i.e. "device is DMA addressing limited" and not a guessed conclusion.
next prev parent reply other threads:[~2025-04-14 11:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-14 11:06 Balbir Singh
2025-04-14 11:14 ` Christoph Hellwig [this message]
2025-04-14 11:36 ` Balbir Singh
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