From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
j.neuschaefer@gmx.net
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH v5 10/16] powerpc/kconfig: define PAGE_SHIFT inside Kconfig
Date: Thu, 21 Feb 2019 19:08:46 +0000 (UTC) [thread overview]
Message-ID: <48b5bf4da0842d93319202c3d4fb1041e6443f31.1550775950.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1550775950.git.christophe.leroy@c-s.fr>
This patch defined CONFIG_PPC_PAGE_SHIFT in order
to be able to use PAGE_SHIFT value inside Kconfig.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/Kconfig | 7 +++++++
arch/powerpc/include/asm/page.h | 13 ++-----------
2 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 849b0d5ac3d1..417e52a27f63 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -708,6 +708,13 @@ config PPC_256K_PAGES
endchoice
+config PPC_PAGE_SHIFT
+ int
+ default 18 if PPC_256K_PAGES
+ default 16 if PPC_64K_PAGES
+ default 14 if PPC_16K_PAGES
+ default 12
+
config THREAD_SHIFT
int "Thread shift" if EXPERT
range 13 15
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index aa4497175bd3..ed870468ef6f 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -20,20 +20,11 @@
/*
* On regular PPC32 page size is 4K (but we support 4K/16K/64K/256K pages
- * on PPC44x). For PPC64 we support either 4K or 64K software
+ * on PPC44x and 4K/16K on 8xx). For PPC64 we support either 4K or 64K software
* page size. When using 64K pages however, whether we are really supporting
* 64K pages in HW or not is irrelevant to those definitions.
*/
-#if defined(CONFIG_PPC_256K_PAGES)
-#define PAGE_SHIFT 18
-#elif defined(CONFIG_PPC_64K_PAGES)
-#define PAGE_SHIFT 16
-#elif defined(CONFIG_PPC_16K_PAGES)
-#define PAGE_SHIFT 14
-#else
-#define PAGE_SHIFT 12
-#endif
-
+#define PAGE_SHIFT CONFIG_PPC_PAGE_SHIFT
#define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
#ifndef __ASSEMBLY__
--
2.13.3
next prev parent reply other threads:[~2019-02-21 19:27 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-21 19:08 [PATCH v5 00/16] powerpc/32: Use BATs/LTLBs for STRICT_KERNEL_RWX Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 01/16] powerpc/wii: properly disable use of BATs when requested Christophe Leroy
2019-02-26 3:27 ` [v5, " Michael Ellerman
2019-02-21 19:08 ` [PATCH v5 02/16] powerpc/mm/32: add base address to mmu_mapin_ram() Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 03/16] powerpc/mm/32s: rework mmu_mapin_ram() Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 04/16] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 05/16] powerpc/32: always populate page tables for Abatron BDI Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 06/16] powerpc/wii: remove wii_mmu_mapin_mem2() Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 07/16] powerpc/mm/32s: use _PAGE_EXEC in setbat() Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 08/16] powerpc/32: add helper to write into segment registers Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 09/16] powerpc/mmu: add is_strict_kernel_rwx() helper Christophe Leroy
2019-02-21 19:08 ` Christophe Leroy [this message]
2019-02-21 19:08 ` [PATCH v5 11/16] powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 12/16] powerpc/mm/32s: add setibat() clearibat() and update_bats() Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2019-06-15 11:23 ` Andreas Schwab
2019-06-15 13:22 ` Christophe Leroy
2019-06-16 8:20 ` christophe leroy
2019-06-16 9:29 ` Andreas Schwab
2019-06-16 10:13 ` Andreas Schwab
2019-06-15 12:28 ` Andreas Schwab
2019-06-16 8:01 ` christophe leroy
2019-06-16 8:45 ` Andreas Schwab
2019-06-15 12:47 ` [PATCH] powerpc/mm/32s: only use MMU to mark initmem NX if STRICT_KERNEL_RWX Andreas Schwab
2019-06-15 13:25 ` Christophe Leroy
2019-06-15 14:36 ` Andreas Schwab
2019-06-16 8:06 ` christophe leroy
2019-06-17 21:22 ` [PATCH] powerpc/mm/32s: fix condition that is always true Andreas Schwab
2019-06-17 21:47 ` Christophe Leroy
2019-06-30 8:37 ` Michael Ellerman
2019-02-21 19:08 ` [PATCH v5 14/16] powerpc/kconfig: make _etext and data areas alignment configurable on Book3s 32 Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 15/16] powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX Christophe Leroy
2019-02-21 19:08 ` [PATCH v5 16/16] powerpc/kconfig: make _etext and data areas alignment configurable on 8xx 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=48b5bf4da0842d93319202c3d4fb1041e6443f31.1550775950.git.christophe.leroy@c-s.fr \
--to=christophe.leroy@c-s.fr \
--cc=benh@kernel.crashing.org \
--cc=j.neuschaefer@gmx.net \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mpe@ellerman.id.au \
--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).