Messages in this thread | | | From | Marco Elver <> | Date | Fri, 17 Jun 2022 12:18:41 +0200 | Subject | Re: [PATCH v4 1/2] asm-generic: Add memory barrier dma_mb() |
| |
On Fri, 17 Jun 2022 at 01:13, Paul E. McKenney <paulmck@kernel.org> wrote: > > On Mon, May 23, 2022 at 01:35:27PM +0200, Marco Elver wrote: > > On Mon, 23 May 2022 at 13:21, Kefeng Wang <wangkefeng.wang@huawei.com> wrote: > > > > > > The memory barrier dma_mb() is introduced by commit a76a37777f2c > > > ("iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer"), > > > which is used to ensure that prior (both reads and writes) accesses > > > to memory by a CPU are ordered w.r.t. a subsequent MMIO write. > > > > > > Reviewed-by: Arnd Bergmann <arnd@arndb.de> # for asm-generic > > > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > > > > Reviewed-by: Marco Elver <elver@google.com> > > Just checking... Did these ever get picked up? It was suggested > that they go up via the arm64 tree, if I remember correctly.
I don't see them in -next, and as far as I can tell, they're not in the arm64 tree.
Thanks, -- Marco
| |