[PATCHv2 3/3] powerpc/ptdump: Show the exec flag of kernel mappings on e500

["Ritesh Harjani (IBM)" <ritesh.list@gmail.com>]

On e500, _PAGE_EXEC is made of two bits, _PAGE_BAP_SX and _PAGE_BAP_UX,
and a kernel mapping only has _PAGE_BAP_SX (supervisor bit). The flag
table requires all the bits of the mask to be set to print "X", so
kernel_page_tables never shows a kernel mapping as executable:

w/o this patch:
  0xf1015000-0xf1015fff  0x00000000         4K PTE   r          present  coherent                  accessed

Print "X" when any of the bits is set the same way it is done for
_PAGE_READ and _PAGE_WRITE:

with this patch:
  0xf1015000-0xf1015fff  0x00000000         4K PTE   r      X   present  coherent                  accessed

This only changes what is displayed. ptdump_check_wx() uses pte_exec()
which already tests for either of the bits.

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
---
 arch/powerpc/mm/ptdump/shared.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/mm/ptdump/shared.c b/arch/powerpc/mm/ptdump/shared.c
index edc69da19b85..e28a41a8b1ac 100644
--- a/arch/powerpc/mm/ptdump/shared.c
+++ b/arch/powerpc/mm/ptdump/shared.c
@@ -22,9 +22,9 @@ static const struct flag_info flag_array[] = {
 		.clear	= "w",
 	}, {
 		.mask	= _PAGE_EXEC,
-		.val	= _PAGE_EXEC,
-		.set	= " X ",
-		.clear	= "   ",
+		.val	= 0,
+		.set	= "   ",
+		.clear	= " X ",
 	}, {
 		.mask	= _PAGE_PRESENT,
 		.val	= _PAGE_PRESENT,
--
2.39.5