On Thu, Jan 26, 2023 at 03:33:46PM +0100, Fabio M. De Francesco 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. > > Therefore, if ARCH_HAS_FLUSH_ON_KUNMAP is defined, call > kunmap_flush_on_unmap() on an aligned-down to page address computed with > the PTR_ALIGN_DOWN() macro. You missed a spot. Sent the version I've had in my tree for a few days.
