On Thu, Jan 26, 2023 at 12:38:58PM -0800, Andrew Morton wrote: > On Thu, 26 Jan 2023 15:33:46 +0100 "Fabio M. De Francesco" <fmdefrancesco@xxxxxxxxx> wrote: > > > If ARCH_HAS_FLUSH_ON_KUNMAP is defined (PA-RISC case), __kunmap_local() > > calls kunmap_flush_on_unmap(). The latter currently flushes the wrong > > address (as confirmed by Matthew Wilcox and Helge Deller). Al Viro > > proposed to call kunmap_flush_on_unmap() on an aligned-down to page > > address in order to fix this issue. Consensus has been reached on this > > solution. > > What are the user-visible runtime effects of this flaw? The version of this patch I sent out includes this information, as well as the missed alignment for kunmap_atomic().
