This is a note to let you know that I've just added the patch titled
parisc: Fix encoding of swp_entry due to added SWP_EXCLUSIVE flag
to the 6.3-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:
parisc-fix-encoding-of-swp_entry-due-to-added-swp_exclusive-flag.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6f9e98849edaa8aefc4030ff3500e41556e83ff7 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Sat, 13 May 2023 22:30:06 +0200
Subject: parisc: Fix encoding of swp_entry due to added SWP_EXCLUSIVE flag
From: Helge Deller <deller@xxxxxx>
commit 6f9e98849edaa8aefc4030ff3500e41556e83ff7 upstream.
Fix the __swp_offset() and __swp_entry() macros due to commit 6d239fc78c0b
("parisc/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE") which introduced the
SWP_EXCLUSIVE flag by reusing the _PAGE_ACCESSED flag.
Reported-by: Christoph Biedl <linux-kernel.bfrz@xxxxxxxxxxxxxxxxxx>
Tested-by: Christoph Biedl <linux-kernel.bfrz@xxxxxxxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Helge Deller <deller@xxxxxx>
Fixes: 6d239fc78c0b ("parisc/mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE")
Cc: <stable@xxxxxxxxxxxxxxx> # v6.3+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/include/asm/pgtable.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -413,12 +413,12 @@ extern void paging_init (void);
* For the 64bit version, the offset is extended by 32bit.
*/
#define __swp_type(x) ((x).val & 0x1f)
-#define __swp_offset(x) ( (((x).val >> 6) & 0x7) | \
- (((x).val >> 8) & ~0x7) )
+#define __swp_offset(x) ( (((x).val >> 5) & 0x7) | \
+ (((x).val >> 10) << 3) )
#define __swp_entry(type, offset) ((swp_entry_t) { \
((type) & 0x1f) | \
- ((offset & 0x7) << 6) | \
- ((offset & ~0x7) << 8) })
+ ((offset & 0x7) << 5) | \
+ ((offset >> 3) << 10) })
#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) })
#define __swp_entry_to_pte(x) ((pte_t) { (x).val })
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-6.3/parisc-fix-encoding-of-swp_entry-due-to-added-swp_exclusive-flag.patch
