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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: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 05/16] powerpc/32: always populate page tables for Abatron BDI.
Date: Thu, 21 Feb 2019 08:04:53 +0000 (UTC)	[thread overview]
Message-ID: <133a78db72f9a053c249574390491620e974a826.1550692943.git.christophe.leroy@c-s.fr> (raw)
In-Reply-To: <cover.1550692943.git.christophe.leroy@c-s.fr>

When CONFIG_BDI_SWITCH is set, the page tables have to be populated
allthough large TLBs are used, because the BDI switch knows nothing
about those large TLBs which are handled directly in TLB miss logic.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 arch/powerpc/mm/pgtable_32.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 2bf9bf8867d4..f54922f0d792 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -263,7 +263,10 @@ void __init mapin_ram(void)
 		if (base >= top)
 			continue;
 		base = mmu_mapin_ram(base, top);
-		__mapin_ram_chunk(base, top);
+		if (IS_ENABLED(CONFIG_BDI_SWITCH))
+			__mapin_ram_chunk(reg->base, top);
+		else
+			__mapin_ram_chunk(base, top);
 	}
 }
 
-- 
2.13.3


  parent reply	other threads:[~2019-02-21  8:04 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-21  8:04 [PATCH v4 00/16] powerpc/32: Use BATs/LTLBs for STRICT_KERNEL_RWX Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 01/16] powerpc/wii: properly disable use of BATs when requested Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 02/16] powerpc/mm/32: add base address to mmu_mapin_ram() Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 03/16] powerpc/mm/32s: rework mmu_mapin_ram() Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 04/16] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks Christophe Leroy
2019-02-21 13:51   ` Michael Ellerman
2019-02-21 14:38     ` Christophe Leroy
2019-02-21 19:02     ` Christophe Leroy
2019-02-21  8:04 ` Christophe Leroy [this message]
2019-02-21  8:04 ` [PATCH v4 06/16] powerpc/wii: remove wii_mmu_mapin_mem2() Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 07/16] powerpc/mm/32s: use _PAGE_EXEC in setbat() Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 08/16] powerpc/32: add helper to write into segment registers Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 09/16] powerpc/mmu: add is_strict_kernel_rwx() helper Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 10/16] powerpc/kconfig: define PAGE_SHIFT inside Kconfig Christophe Leroy
2019-02-21  8:04 ` [PATCH v4 11/16] powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT Christophe Leroy
2019-02-21  8:05 ` [PATCH v4 12/16] powerpc/mm/32s: add setibat() clearibat() and update_bats() Christophe Leroy
2019-02-21  8:05 ` [PATCH v4 13/16] powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX Christophe Leroy
2019-02-21  8:05 ` [PATCH v4 14/16] powerpc/kconfig: make _etext and data areas alignment configurable on Book3s 32 Christophe Leroy
2019-02-21  8:05 ` [PATCH v4 15/16] powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX Christophe Leroy
2019-02-21  8:05 ` [PATCH v4 16/16] powerpc/kconfig: make _etext and data areas alignment configurable on 8xx Christophe Leroy

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