2018-05-15 16:46 GMT+08:00 Vincent Chen <[email protected]>: > The following 3 issues are fixed in this patchset > > 1. In function flush_dacache_page and copy_user_highpage, the local irq is > enabled when the cache of the page at address page_address(page) is written > back to memory. It possibly causes data corruption. To fix this problem, > the local irq is disabled before executing d-cache write-back and > invalidate in this patchset. > > 2. According to Documentation/cachetlb.txt, the cache of the page at vmaddr > shall be flushed in flush_anon_page instead of the cache of the page at > page_address(page). We correct it and add the modification to this > patchset. > > 3. Removing unneeded cache invalidation in copy_user_highpage function. > > > Vincent Chen (3): > nds32: Correct flush_dcache_page function > nds32: Flush the cache of the page at vmaddr instead of kaddr in > flush_anon_page > nds32: Disable local irq before calling cpu_dcache_wb_page in > copy_user_highpage > > arch/nds32/mm/cacheflush.c | 34 ++++++++++++++++++++-------------- > 1 files changed, 20 insertions(+), 14 deletions(-) >
Thank you, Vincent. Reviewed-by: Greentime Hu <[email protected]>
