On Thu, Aug 22, 2024 at 05:25:10AM +0000, LEROY Christophe wrote: > > and this results in a call to dma_direct_allocation(), which has one > > innocent looking memset(): > > > memset() can't be used on non-cached memory, memset_io() has to be used > instead.
No, we use memset on uncached memory all the time. Note that uncached memory != __iomem memory, for which you DO have to use memset_io.
