On 31/03/17 12:37, Oliver O'Halloran wrote:
On Book3s we have two PTE flags used to mark cache-inhibited mappings:
_PAGE_TOLERANT and _PAGE_NON_IDEMPOTENT. Currently the kernel page
table dumper only looks at the generic _PAGE_NO_CACHE which is
defined to be _PAGE_TOLERANT. This patch modifies the dumper so
both flags are shown in the dump.
Cc: Rashmica Gupta <rashmic...@gmail.com>
Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
Should we also add in _PAGE_SAO that is in Book3s?
---
arch/powerpc/mm/dump_linuxpagetables.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/powerpc/mm/dump_linuxpagetables.c
b/arch/powerpc/mm/dump_linuxpagetables.c
index 49abaf4dc8e3..e7cbfd5a0940 100644
--- a/arch/powerpc/mm/dump_linuxpagetables.c
+++ b/arch/powerpc/mm/dump_linuxpagetables.c
@@ -154,11 +154,24 @@ static const struct flag_info flag_array[] = {
.clear = " ",
}, {
#endif
+#ifndef CONFIG_PPC_BOOK3S_64
.mask = _PAGE_NO_CACHE,
.val = _PAGE_NO_CACHE,
.set = "no cache",
.clear = " ",
}, {
+#else
+ .mask = _PAGE_NON_IDEMPOTENT,
+ .val = _PAGE_NON_IDEMPOTENT,
+ .set = "non-idempotent",
+ .clear = " ",
+ }, {
+ .mask = _PAGE_TOLERANT,
+ .val = _PAGE_TOLERANT,
+ .set = "tolerant",
+ .clear = " ",
+ }, {
+#endif
#ifdef CONFIG_PPC_BOOK3S_64
.mask = H_PAGE_BUSY,
.val = H_PAGE_BUSY,
