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 00/16] powerpc/32: Use BATs/LTLBs for STRICT_KERNEL_RWX
Date: Thu, 21 Feb 2019 08:04:48 +0000 (UTC) [thread overview]
Message-ID: <cover.1550692943.git.christophe.leroy@c-s.fr> (raw)
The purpose of this serie is to:
- use BATs with STRICT_KERNEL_RWX on book3s (See patch 13 for details.)
- use LTLBs with STRICT_KERNEL_RWX on 8xx (See patch 15 for a few details.)
v4:
- Fixed mapin_ram() to only map mem below total_lowmem (patch 4)
- Fixed sparse warning by making __mmu_mapin_ram static (patch 13)
v3:
- Reordered to avoid build failure due to setibat() not being used for several steps in the serie.
Now the patch using setibat() is next to the one adding setibat().
- Fixed mmu_mapin_ram() in patch 3 to return base in all cases, thanks Jonathan for the test
- Fixed build failure on 8xx when CONFIG_PERF_EVENTS is set due to too many instructions in Exception 0x1200
- Made 8M alignment for data the default on 8xx when STRICT_KERNEL_RWX is selected.
- Added patch 1 to not set additionnal bat on the wii when requesting nobats. The only purpose of this patch
is to be backported, as this function is removed later in the series.
v2:
- Fix patch 2 (was patch 3 in v1) based on feedback from Jonathan.
- Added support for 8xx with LTLBs.
- Added systematic population of pagetables for Abatron BDI.
Christophe Leroy (16):
powerpc/wii: properly disable use of BATs when requested.
powerpc/mm/32: add base address to mmu_mapin_ram()
powerpc/mm/32s: rework mmu_mapin_ram()
powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks.
powerpc/32: always populate page tables for Abatron BDI.
powerpc/wii: remove wii_mmu_mapin_mem2()
powerpc/mm/32s: use _PAGE_EXEC in setbat()
powerpc/32: add helper to write into segment registers
powerpc/mmu: add is_strict_kernel_rwx() helper
powerpc/kconfig: define PAGE_SHIFT inside Kconfig
powerpc/kconfig: define CONFIG_DATA_SHIFT and CONFIG_ETEXT_SHIFT
powerpc/mm/32s: add setibat() clearibat() and update_bats()
powerpc/mm/32s: Use BATs for STRICT_KERNEL_RWX
powerpc/kconfig: make _etext and data areas alignment configurable on
Book3s 32
powerpc/8xx: don't disable large TLBs with CONFIG_STRICT_KERNEL_RWX
powerpc/kconfig: make _etext and data areas alignment configurable on
8xx
arch/powerpc/Kconfig | 60 +++++++++
arch/powerpc/include/asm/book3s/32/mmu-hash.h | 2 +
arch/powerpc/include/asm/book3s/32/pgtable.h | 11 ++
arch/powerpc/include/asm/mmu.h | 11 ++
arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 3 +-
arch/powerpc/include/asm/page.h | 13 +-
arch/powerpc/include/asm/reg.h | 5 +
arch/powerpc/kernel/head_32.S | 35 +++++
arch/powerpc/kernel/head_8xx.S | 54 ++++++--
arch/powerpc/kernel/vmlinux.lds.S | 9 +-
arch/powerpc/mm/40x_mmu.c | 2 +-
arch/powerpc/mm/44x_mmu.c | 2 +-
arch/powerpc/mm/8xx_mmu.c | 33 ++++-
arch/powerpc/mm/fsl_booke_mmu.c | 2 +-
arch/powerpc/mm/init_32.c | 6 +-
arch/powerpc/mm/mmu_decl.h | 10 +-
arch/powerpc/mm/pgtable_32.c | 42 +++---
arch/powerpc/mm/ppc_mmu_32.c | 180 ++++++++++++++++++++++----
arch/powerpc/platforms/embedded6xx/wii.c | 24 ----
19 files changed, 393 insertions(+), 111 deletions(-)
--
2.13.3
next 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 Christophe Leroy [this message]
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 ` [PATCH v4 05/16] powerpc/32: always populate page tables for Abatron BDI Christophe Leroy
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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