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 v2 10/15] powerpc/kconfig: define PAGE_SHIFT inside Kconfig
Date: Thu, 10 Jan 2019 15:11:59 +0000 (UTC) [thread overview]
Message-ID: <f9cb8d4b198cf836a4ab15a53649845b336ceb2a.1547132681.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1547132681.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 2890d36eb531..d72caed57f2c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -714,6 +714,13 @@ 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 5c5ea2413413..bc4bb6c6efce 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:[~2019-01-10 15:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 15:11 [PATCH v2 00/15] powerpc/32s: Use BATs/LTLBs for STRICT_KERNEL_RWX Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 01/15] powerpc/mm/32: add base address to mmu_mapin_ram() Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 02/15] powerpc/mm/32s: rework mmu_mapin_ram() Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 03/15] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 04/15] powerpc/32: always populate page tables for Abatron BDI Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 05/15] powerpc/wii: remove wii_mmu_mapin_mem2() Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 06/15] powerpc/mm/32s: use _PAGE_EXEC in setbat() Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 07/15] powerpc/mm/32s: add setibat() clearibat() and update_bats() Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 08/15] powerpc/32: add helper to write into segment registers Christophe Leroy
2019-01-10 15:11 ` [PATCH v2 09/15] powerpc/mmu: add is_strict_kernel_rwx() helper Christophe Leroy
2019-01-10 15:11 ` Christophe Leroy [this message]
2019-01-10 15:12 ` [PATCH v2 11/15] powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT Christophe Leroy
2019-01-10 15:12 ` [PATCH v2 12/15] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2019-01-10 15:12 ` [PATCH v2 13/15] powerpc/kconfig: make _etext and data areas alignment configurable on Book3s 32 Christophe Leroy
2019-01-10 15:12 ` [PATCH v2 14/15] powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX Christophe Leroy
2019-01-10 15:12 ` [PATCH v2 15/15] powerpc/kconfig: make _etext and data areas alignment configurable on 8xx Christophe Leroy
2019-01-13 18:16 ` [PATCH v2 00/15] powerpc/32s: Use BATs/LTLBs for STRICT_KERNEL_RWX Jonathan Neuschäfer
2019-01-13 19:43 ` Christophe Leroy
2019-01-13 21:02 ` Jonathan Neuschäfer
2019-01-14 18:23 ` Christophe Leroy
2019-01-15 0:33 ` Jonathan Neuschäfer
2019-01-15 6:51 ` Christophe Leroy
2019-01-15 10:22 ` Michael Ellerman
2019-01-15 10:57 ` Christophe Leroy
2019-02-20 13:23 ` Michael Ellerman
2019-02-20 15:30 ` Christophe Leroy
2019-01-16 0:35 ` Jonathan Neuschäfer
2019-01-16 6:55 ` Christophe Leroy
2019-01-16 13:16 ` Jonathan Neuschäfer
2019-01-16 13:34 ` Christophe Leroy
2019-01-16 23:48 ` Jonathan Neuschäfer
2019-01-17 10:14 ` Christophe Leroy
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