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Date: Mon, 21 Oct 2024 17:19:56 -0500
From: Bjorn Helgaas <helgaas@kernel.org>
To: Damien Le Moal <dlemoal@kernel.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
	Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <kw@linux.com>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Rob Herring <robh@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Jingoo Han <jingoohan1@gmail.com>, linux-pci@vger.kernel.org,
	Rick Wertenbroek <rick.wertenbroek@gmail.com>,
	Niklas Cassel <cassel@kernel.org>
Subject: Re: [PATCH v6 0/6] Improve PCI memory mapping API
Message-ID: <20241021221956.GA851955@bhelgaas>
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In-Reply-To: <20241012113246.95634-1-dlemoal@kernel.org>

On Sat, Oct 12, 2024 at 08:32:40PM +0900, Damien Le Moal wrote:
> This series introduces the new functions pci_epc_mem_map() and
> pci_epc_mem_unmap() to improve handling of the PCI address mapping
> alignment constraints of endpoint controllers in a controller
> independent manner.

Hi Damien, I know this is obvious to everybody except me, but who uses
this mapping?  A driver running on the endpoint that does MMIO?  DMA
(Memory Reads or Writes that target an endpoint BAR)?  I'm still
trying to wrap my head around the whole endpoint driver model.

Bjorn