Hi Gavin, On Wed, Sep 23, 2020 at 03:37:19PM +1000, Gavin Shan wrote: > The feature of color zero pages isn't enabled on arm64, meaning all > read-only (anonymous) VM areas are backed up by same zero page. It > leads pressure to L1 (data) cache on reading data from them. This > tries to enable color zero pages. > > PATCH[1/2] decouples the zero PGD table from zero page > PATCH[2/2] allocates the needed zero pages according to L1 cache size
To save you (and potential reviewers) some time, please include in the cover letter details of a realistic workload/benchmark that is improved by this patchset, backed by numbers. Just because it's doable and the patches aren't too complex is not a good enough reason for merging. Thanks. -- Catalin
