This is a note to let you know that I've just added the patch titled
powerpc/mm: Use the correct pointer when setting a 2MB pte
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-mm-use-the-correct-pointer-when-setting-a-2mb-pte.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a0615a16f7d0ceb5804d295203c302d496d8ee91 Mon Sep 17 00:00:00 2001
From: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
Date: Wed, 25 Jan 2017 09:54:33 -0600
Subject: powerpc/mm: Use the correct pointer when setting a 2MB pte
From: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
commit a0615a16f7d0ceb5804d295203c302d496d8ee91 upstream.
When setting a 2MB pte, radix__map_kernel_page() is using the address
ptep = (pte_t *)pudp;
Fix this conversion to use pmdp instead. Use pmdp_ptep() to do this
instead of casting the pointer.
Fixes: 2bfd65e45e87 ("powerpc/mm/radix: Add radix callbacks for early init routines")
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/mm/pgtable-radix.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -65,7 +65,7 @@ int radix__map_kernel_page(unsigned long
if (!pmdp)
return -ENOMEM;
if (map_page_size == PMD_SIZE) {
- ptep = (pte_t *)pudp;
+ ptep = pmdp_ptep(pmdp);
goto set_the_pte;
}
ptep = pte_alloc_kernel(pmdp, ea);
@@ -90,7 +90,7 @@ int radix__map_kernel_page(unsigned long
}
pmdp = pmd_offset(pudp, ea);
if (map_page_size == PMD_SIZE) {
- ptep = (pte_t *)pudp;
+ ptep = pmdp_ptep(pmdp);
goto set_the_pte;
}
if (!pmd_present(*pmdp)) {
Patches currently in stable-queue which might be from arbab@xxxxxxxxxxxxxxxxxx are
queue-4.9/powerpc-mm-use-the-correct-pointer-when-setting-a-2mb-pte.patch
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