684500f29f
[ Upstream commit e675a4fd6d1f8990d3bed5dada3d20edfa000423 ] This series [1] reduced the kmalloc() minimum alignment on arm64 to 8 bytes (from 128). In libsas, this will cause SMP requests to be 8-byte aligned through kmalloc() allocation. However, for hisi_sas hardware, all command addresses must be 16-byte-aligned. Otherwise, the commands fail to be executed. ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA operations, so use ARCH_DMA_MINALIGN as the alignment for SMP request. Link: https://lkml.kernel.org/r/20230612153201.554742-1-catalin.marinas@arm.com [1] Signed-off-by: Yihang Li <liyihang9@huawei.com> Link: https://lore.kernel.org/r/20240328090626.621147-1-liyihang9@huawei.com Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: John Garry <john.g.garry@oracle.com> Reviewed-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.