From: Paul Mackerras <paulus@samba.org>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman <mpe@ellerman.id.au>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Paul Mackerras <paulus@samba.org>
Subject: [RFC PATCH 8/9] powerpc/mm/book3s-64: Move software-used bits in PTE
Date: Sat, 20 Feb 2016 17:12:39 +1100 [thread overview]
Message-ID: <1455948760-24710-9-git-send-email-paulus@samba.org> (raw)
In-Reply-To: <1455948760-24710-1-git-send-email-paulus@samba.org>
This moves the _PAGE_BUSY, _PAGE_SPECIAL and _PAGE_SOFT_DIRTY bits
in the Linux PTE on 64-bit Book 3S systems to bit positions which
are designated for software use in the radix PTE format used by
PowerISA v3.0 CPUs in radix mode.
Signed-off-by: Paul Mackerras <paulus@samba.org>
---
arch/powerpc/include/asm/book3s/64/hash.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h
index 0fc750c..f355a8b 100644
--- a/arch/powerpc/include/asm/book3s/64/hash.h
+++ b/arch/powerpc/include/asm/book3s/64/hash.h
@@ -26,11 +26,11 @@
#define _PAGE_WRITETHRU 0x00040 /* W: cache write-through */
#define _PAGE_DIRTY 0x00080 /* C: page changed */
#define _PAGE_ACCESSED 0x00100 /* R: page referenced */
-#define _PAGE_BUSY 0x00800 /* software: PTE & hash are busy */
-#define _PAGE_SPECIAL 0x10000 /* software: special page */
+#define _PAGE_BUSY 0x00200 /* software: PTE & hash are busy */
+#define _PAGE_SPECIAL 0x00400 /* software: special page */
#ifdef CONFIG_MEM_SOFT_DIRTY
-#define _PAGE_SOFT_DIRTY 0x20000 /* software: software dirty tracking */
+#define _PAGE_SOFT_DIRTY 0x00800 /* software: software dirty tracking */
#else
#define _PAGE_SOFT_DIRTY 0x00000
#endif
--
2.5.0
next prev parent reply other threads:[~2016-02-20 6:13 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-20 6:12 [RFC PATCH 0/9] powerpc/mm: Restructure Linux PTE on Book3S/64 to radix format Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 1/9] powerpc/mm/book3s-64: Clean up some obsolete or misleading comments Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 2/9] powerpc/mm/book3s-64: Free up 7 high-order bits in the Linux PTE Paul Mackerras
2016-02-20 16:16 ` Aneesh Kumar K.V
2016-02-21 22:43 ` Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 3/9] powerpc/mm/64: Use physical addresses in upper page table tree levels Paul Mackerras
2016-02-20 16:35 ` Aneesh Kumar K.V
2016-02-21 22:45 ` Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 4/9] powerpc/mm/book3s-64: Move _PAGE_PRESENT to the most significant bit Paul Mackerras
2016-02-20 8:33 ` kbuild test robot
2016-02-20 16:41 ` Aneesh Kumar K.V
2016-02-21 22:40 ` Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 5/9] powerpc/mm/book3s-64: Move _PAGE_PTE to 2nd " Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 6/9] powerpc/mm/book3s-64: Move HPTE-related bits in PTE to upper end Paul Mackerras
2016-02-20 6:12 ` [RFC PATCH 7/9] powerpc/mm/book3s-64: Shuffle read, write, execute and user bits in PTE Paul Mackerras
2016-02-21 7:30 ` Aneesh Kumar K.V
2016-02-21 22:36 ` Paul Mackerras
2016-02-22 0:27 ` Michael Ellerman
2016-02-20 6:12 ` Paul Mackerras [this message]
2016-02-20 6:12 ` [RFC PATCH 9/9] powerpc/mm/book3s-64: Expand the real page number field of the Linux PTE Paul Mackerras
2016-02-20 14:40 ` [RFC PATCH 0/9] powerpc/mm: Restructure Linux PTE on Book3S/64 to radix format Aneesh Kumar K.V
2016-02-20 15:32 ` Aneesh Kumar K.V
2016-02-21 7:41 ` Aneesh Kumar K.V
2016-02-21 22:31 ` Paul Mackerras
2016-02-22 0:30 ` Michael Ellerman
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