powerpc/ptdump: Add _PAGE_COHERENT flag

For platforms using shared.c (4xx, Book3e, Book3s/32), also handle the
_PAGE_COHERENT flag which corresponds to the M bit of the WIMG flags.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Make it more verbose, use "coherent" rather than "m"]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/324c3d860717e8e91fca3bb6c0f8b23e1644a404.1589866984.git.christophe.leroy@csgroup.eu

diff --git a/arch/powerpc/mm/ptdump/shared.c b/arch/powerpc/mm/ptdump/shared.c
index f7ed2f1..784f8df 100644 (file)
--- a/arch/powerpc/mm/ptdump/shared.c
+++ b/arch/powerpc/mm/ptdump/shared.c
@@ -30,6 +30,11 @@ static const struct flag_info flag_array[] = {
                .val    = _PAGE_PRESENT,
                .set    = "present",
                .clear  = "       ",
+       }, {
+               .mask   = _PAGE_COHERENT,
+               .val    = _PAGE_COHERENT,
+               .set    = "coherent",
+               .clear  = "        ",
        }, {
                .mask   = _PAGE_GUARDED,
                .val    = _PAGE_GUARDED,