nvme: Add a quirk for page aligned admin queue buffers

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Apple controllers seem to require any queue buffers on the admin queue
to be aligned to the NVMe controller page size. Weirdly, this constraint
does not apply to the i/o queue where any alignment is fine. This has
always been required on pre-M1 controllers and is required starting with
macOS 15 firmware or post-M4 controllers again. On M1/M2/M3 we only got
away with this because there was a chicken bit to disable this
requirement. Let's add a quirk that enforces this alignment.

Tested-by: Joshua Peisach <jpeisach@ubuntu.com>
Tested-by: Janne Grunau <j@jannau.net>
Tested-by: Nick Chan <towinchenmi@gmail.com>
Signed-off-by: Sven Peter <sven@kernel.org>

...

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Sven Peter 2026-08-06 17:27:36 +02:00 • committed by Keith Busch

parent cc0fec9b42

commit 69d22a6b2f

2 changed files with 11 additions and 1 deletions

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5

drivers/nvme/host/core.c

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7

drivers/nvme/host/nvme.h

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