TWx Linux Repository
2984f7f3bb
The tlb_sync_pending flag was necessary for correctness in the Mediatek M4U driver, but since it offered a small theoretical optimisation for all io-pgtable users it was implemented as a high-level thing. However, now that some users may not be using a synchronising lock, there are several ways this flag can go wrong for them, and at worst it could result in incorrect behaviour. Since we've addressed the correctness issue within the Mediatek driver itself, and fixing the optimisation aspect to be concurrency-safe would be quite a headache (and impose extra overhead on every operation for the sake of slightly helping one case which will virtually never happen in typical usage), let's just retire it. This reverts commit 88492a4700360a086e55d8874ad786105a5e8b0f. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.