On Thu, Nov 04, 2021 at 06:04:45PM +0000, Catalin Marinas wrote: > The cachetlb.rst doc states the two cases where flush_dcache_page() > should be called: > > 1. After writing to a page cache page (that's what we need on arm64 for > the I-cache). > > 2. Before reading from a page cache page and user mappings potentially > exist. I think arm32 ensures the D-cache user aliases are coherent > with the kernel one (added rmk to confirm). Yes, where necessary, we flush the user aliases in flush_dcache_page(). -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
