From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Dominik Brodowski <linux@dominikbrodowski.net>,
Geoff Levand <geoff@infradead.org>, Jens Axboe <axboe@kernel.dk>,
Kumar Gala <galak@kernel.crashing.org>,
Li Yang <leoyang.li@nxp.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Paul Mackerras <paulus@samba.org>, Scott Wood <oss@buserror.net>,
aneesh.kumar@linux.vnet.ibm.com
Cc: linux-arm-kernel@lists.infradead.org,
linux-block@vger.kernel.org, linux-fbdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
dri-devel@lists.freedesktop.org
Subject: [PATCH v2 14/24] powerpc/mm: drop unused page flags
Date: Wed, 12 Sep 2018 15:58:42 +0000 (UTC) [thread overview]
Message-ID: <d5036d6c9b61e9552eba111ceace1afa2c532df5.1536692743.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1536692743.git.christophe.leroy@c-s.fr>
The following page flags in pte-common.h can be dropped:
_PAGE_ENDIAN is only used in mm/fsl_booke_mmu.c and is defined in
asm/nohash/32/pte-fsl-booke.h
_PAGE_4K_PFN is nowhere defined nor used
_PAGE_READ, _PAGE_WRITE and _PAGE_PTE are only defined and used
in book3s/64
The following page flags in book3s/64/pgtable.h can be dropped as
they are not used on this platform nor by common code.
_PAGE_NA, _PAGE_RO, _PAGE_USER and _PAGE_PSIZE
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 10 +---------
arch/powerpc/include/asm/pte-common.h | 17 +----------------
2 files changed, 2 insertions(+), 25 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 56eddd79ab7d..8cf44faa6ff3 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -14,10 +14,6 @@
*/
#define _PAGE_BIT_SWAP_TYPE 0
-#define _PAGE_NA 0
-#define _PAGE_RO 0
-#define _PAGE_USER 0
-
#define _PAGE_EXEC 0x00001 /* execute permission */
#define _PAGE_WRITE 0x00002 /* write access allowed */
#define _PAGE_READ 0x00004 /* read access allowed */
@@ -123,10 +119,6 @@
#define _PAGE_KERNEL_RWX (_PAGE_PRIVILEGED | _PAGE_DIRTY | \
_PAGE_RW | _PAGE_EXEC)
/*
- * No page size encoding in the linux PTE
- */
-#define _PAGE_PSIZE 0
-/*
* _PAGE_CHG_MASK masks of bits that are to be preserved across
* pgprot changes
*/
@@ -149,7 +141,7 @@
* pages. We always set _PAGE_COHERENT when SMP is enabled or
* the processor might need it for DMA coherency.
*/
-#define _PAGE_BASE_NC (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_PSIZE)
+#define _PAGE_BASE_NC (_PAGE_PRESENT | _PAGE_ACCESSED)
#define _PAGE_BASE (_PAGE_BASE_NC)
/* Permission masks used to generate the __P and __S table,
diff --git a/arch/powerpc/include/asm/pte-common.h b/arch/powerpc/include/asm/pte-common.h
index bef56141a549..5a5ba43bdf98 100644
--- a/arch/powerpc/include/asm/pte-common.h
+++ b/arch/powerpc/include/asm/pte-common.h
@@ -14,18 +14,12 @@
#ifndef _PAGE_EXEC
#define _PAGE_EXEC 0
#endif
-#ifndef _PAGE_ENDIAN
-#define _PAGE_ENDIAN 0
-#endif
#ifndef _PAGE_COHERENT
#define _PAGE_COHERENT 0
#endif
#ifndef _PAGE_WRITETHRU
#define _PAGE_WRITETHRU 0
#endif
-#ifndef _PAGE_4K_PFN
-#define _PAGE_4K_PFN 0
-#endif
#ifndef _PAGE_SAO
#define _PAGE_SAO 0
#endif
@@ -39,9 +33,6 @@
#define _PAGE_RW 0
#endif
-#ifndef _PAGE_PTE
-#define _PAGE_PTE 0
-#endif
/* At least one of _PAGE_PRIVILEGED or _PAGE_USER must be defined */
#ifndef _PAGE_PRIVILEGED
#define _PAGE_PRIVILEGED 0
@@ -122,7 +113,7 @@ static inline bool pte_user(pte_t pte)
/* Mask of bits returned by pte_pgprot() */
#define PAGE_PROT_BITS (_PAGE_GUARDED | _PAGE_COHERENT | _PAGE_NO_CACHE | \
- _PAGE_WRITETHRU | _PAGE_ENDIAN | _PAGE_4K_PFN | \
+ _PAGE_WRITETHRU | \
_PAGE_USER | _PAGE_ACCESSED | _PAGE_RO | _PAGE_NA | \
_PAGE_PRIVILEGED | \
_PAGE_RW | _PAGE_HWWRITE | _PAGE_DIRTY | _PAGE_EXEC)
@@ -208,12 +199,6 @@ static inline bool pte_user(pte_t pte)
#define PAGE_AGP (PAGE_KERNEL_NC)
#define HAVE_PAGE_AGP
-#ifndef _PAGE_READ
-/* if not defined, we should not find _PAGE_WRITE too */
-#define _PAGE_READ 0
-#define _PAGE_WRITE _PAGE_RW
-#endif
-
#ifndef H_PAGE_4K_PFN
#define H_PAGE_4K_PFN 0
#endif
--
2.13.3
next prev parent reply other threads:[~2018-09-12 15:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-12 15:58 [PATCH v2 00/24] ban the use of _PAGE_XXX flags outside platform specific code Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 01/24] powerpc/32: Add ioremap_wt() and ioremap_coherent() Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 02/24] drivers/video/fbdev: use ioremap_wc/wt() instead of __ioremap() Christophe Leroy
2018-09-13 13:33 ` Daniel Vetter
2018-09-13 17:02 ` Bartlomiej Zolnierkiewicz
2018-09-12 15:58 ` [PATCH v2 03/24] drivers/block/z2ram: use ioremap_wt() instead of __ioremap(_PAGE_WRITETHRU) Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 04/24] soc/fsl/qbman: use ioremap_cache() instead of ioremap_prot(0) Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 05/24] powerpc: don't use ioremap_prot() nor __ioremap() unless really needed Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 06/24] powerpc/mm: properly set PAGE_KERNEL flags in ioremap() Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 07/24] powerpc: handover page flags with a pgprot_t parameter Christophe Leroy
2018-09-18 17:21 ` Christophe LEROY
2018-09-12 15:58 ` [PATCH v2 08/24] powerpc/mm: don't use _PAGE_EXEC in book3s/32 Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 09/24] powerpc/mm: move some nohash pte helpers in nohash/[32:64]/pgtable.h Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 10/24] powerpc/mm: add pte helpers to query and change pte flags Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 11/24] powerpc/mm: don't use _PAGE_EXEC for calling hash_preload() Christophe Leroy
2018-09-17 7:59 ` Aneesh Kumar K.V
2018-09-12 15:58 ` [PATCH v2 12/24] powerpc/mm: use pte helpers in generic code Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 13/24] powerpc/mm: Split dump_pagelinuxtables flag_array table Christophe Leroy
2018-09-12 15:58 ` Christophe Leroy [this message]
2018-09-12 15:58 ` [PATCH v2 15/24] powerpc/mm: move __P and __S tables in the common pgtable.h Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 16/24] powerpc/book3s/32: do not include pte-common.h Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 17/24] powerpc/mm: Move pte_user() into nohash/pgtable.h Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 18/24] powerpc/mm: Distribute platform specific PAGE and PMD flags and definitions Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 19/24] powerpc/nohash/64: do not include pte-common.h Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 20/24] powerpc/mm: Allow platforms to redefine some helpers Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 21/24] powerpc/mm: Define platform default caches related flags Christophe Leroy
2018-09-12 15:58 ` [PATCH v2 22/24] powerpc/mm: Get rid of pte-common.h Christophe Leroy
2018-09-12 15:59 ` [PATCH v2 23/24] powerpc/8xx: change name of a few page flags to avoid confusion Christophe Leroy
2018-09-12 15:59 ` [PATCH v2 24/24] powerpc/book3s64: Avoid multiple endian conversion in pte helpers Christophe Leroy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=d5036d6c9b61e9552eba111ceace1afa2c532df5.1536692743.git.christophe.leroy@c-s.fr \
--to=christophe.leroy@c-s.fr \
--cc=aneesh.kumar@linux.vnet.ibm.com \
--cc=axboe@kernel.dk \
--cc=b.zolnierkie@samsung.com \
--cc=benh@kernel.crashing.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=galak@kernel.crashing.org \
--cc=geoff@infradead.org \
--cc=leoyang.li@nxp.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-block@vger.kernel.org \
--cc=linux-fbdev@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@dominikbrodowski.net \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--cc=npiggin@gmail.com \
--cc=oss@buserror.net \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).