On Wed, Mar 25, 2020 at 11:44:54AM +0800, Huacai Chen wrote: > LDDIR/LDPTE is Loongson-3's acceleration for Page Table Walking. If BD > (Base Directory, the 4th page directory) is not enabled, then GDOffset > is biased by BadVAddr[63:62]. So, if GDOffset (aka. BadVAddr[47:36] for > Loongson-3) is big enough, "0b11(BadVAddr[63:62])|BadVAddr[47:36]|...." > can far beyond pg_swapper_dir. This means the pg_swapper_dir may NOT be > accessed by LDDIR correctly, so fix it by set PWDirExt in CP0_PWCtl. > > Cc: <stable@xxxxxxxxxxxxxxx> > Signed-off-by: Pei Huang <huangpei@xxxxxxxxxxx> > Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx> > --- > arch/mips/mm/tlbex.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
