> On 27 Jan 2023, at 21:39, Helge Deller <deller@xxxxxx> wrote: > > Matthew Wilcox noticed, that if ARCH_HAS_FLUSH_ON_KUNMAP is defined > (which is the case for PA-RISC), __kunmap_local() calls > kunmap_flush_on_unmap(), which may call the parisc flush functions with > a non-page-aligned address and thus the page might not be fully flushed. > > To prevent similiar cases, page-align any given address in the > following parisc low-level calls: > - clear_page_asm(), > - copy_page_asm(), > - copy_user_page_asm(), > - clear_user_page_asm(), > - flush_kernel_dcache_page_asm(), > - purge_kernel_dcache_page_asm() and > - flush_kernel_icache_page() > > Signed-off-by: Helge Deller <deller@xxxxxx> > Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> > Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > Cc: Ira Weiny <ira.weiny@xxxxxxxxx> > Cc: Fabio M. De Francesco <fmdefrancesco@xxxxxxxxx> Is this patch obsolete as of https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?h=for-next&id=76008c1008dca3cdd7709f4a468b0c3ff9787632 or still relevant? Asking because I want to know if I should carry on testing with it or not. Thanks!
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