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* [PATCH v3 00/15] Enable CONFIG_VMAP_STACK on PPC32
@ 2019-09-10  9:16 Christophe Leroy
  2019-09-10  9:16 ` [PATCH v3 01/15] powerpc/32: replace MTMSRD() by mtmsr Christophe Leroy
                   ` (14 more replies)
  0 siblings, 15 replies; 16+ messages in thread
From: Christophe Leroy @ 2019-09-10  9:16 UTC (permalink / raw)
  To: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman, npiggin, dja
  Cc: linux-mm, linuxppc-dev, linux-kernel

The purpose of this serie is to enable CONFIG_VMAP_STACK on PPC32.

rfc v1: initial support on 8xx

rfc v2: added stack overflow detection.

v3:
- Stack overflow detection works, tested with LKDTM STACK_EXHAUST test
- Support for book3s32 added

Christophe Leroy (15):
  powerpc/32: replace MTMSRD() by mtmsr
  powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h
  powerpc/32: save DEAR/DAR before calling handle_page_fault
  powerpc/32: move MSR_PR test into EXCEPTION_PROLOG_0
  powerpc/32: add a macro to get and/or save DAR and DSISR on stack.
  powerpc/32: prepare for CONFIG_VMAP_STACK
  powerpc: align stack to 2 * THREAD_SIZE with VMAP_STACK
  powerpc/32: Add early stack overflow detection with VMAP stack.
  powerpc/8xx: Use alternative scratch registers in DTLB miss handler
  powerpc/8xx: drop exception entries for non-existing exceptions
  powerpc/8xx: move DataStoreTLBMiss perf handler
  powerpc/8xx: split breakpoint exception
  powerpc/8xx: Enable CONFIG_VMAP_STACK
  powerpc/32s: reorganise DSI handler.
  powerpc/32s: Activate CONFIG_VMAP_STACK

 arch/powerpc/include/asm/irq.h         |   1 +
 arch/powerpc/include/asm/processor.h   |   6 ++
 arch/powerpc/include/asm/thread_info.h |  18 ++++
 arch/powerpc/kernel/asm-offsets.c      |   6 ++
 arch/powerpc/kernel/entry_32.S         |  55 ++++++++--
 arch/powerpc/kernel/head_32.S          |  57 ++++++----
 arch/powerpc/kernel/head_32.h          | 129 ++++++++++++++++++++---
 arch/powerpc/kernel/head_40x.S         |   2 +
 arch/powerpc/kernel/head_8xx.S         | 186 +++++++++++++++------------------
 arch/powerpc/kernel/head_booke.h       |   2 +
 arch/powerpc/kernel/head_fsl_booke.S   |   1 +
 arch/powerpc/kernel/irq.c              |   1 +
 arch/powerpc/kernel/setup_32.c         |   3 +-
 arch/powerpc/kernel/setup_64.c         |   2 +-
 arch/powerpc/kernel/traps.c            |  15 ++-
 arch/powerpc/kernel/vmlinux.lds.S      |   2 +-
 arch/powerpc/mm/book3s32/hash_low.S    |  46 +++++---
 arch/powerpc/mm/book3s32/mmu.c         |   9 +-
 arch/powerpc/perf/8xx-pmu.c            |  12 ++-
 arch/powerpc/platforms/Kconfig.cputype |   3 +
 20 files changed, 379 insertions(+), 177 deletions(-)

-- 
2.13.3


^ permalink raw reply	[flat|nested] 16+ messages in thread

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Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-10  9:16 [PATCH v3 00/15] Enable CONFIG_VMAP_STACK on PPC32 Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 01/15] powerpc/32: replace MTMSRD() by mtmsr Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 02/15] powerpc/32: Add EXCEPTION_PROLOG_0 in head_32.h Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 03/15] powerpc/32: save DEAR/DAR before calling handle_page_fault Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 04/15] powerpc/32: move MSR_PR test into EXCEPTION_PROLOG_0 Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 05/15] powerpc/32: add a macro to get and/or save DAR and DSISR on stack Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 06/15] powerpc/32: prepare for CONFIG_VMAP_STACK Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 07/15] powerpc: align stack to 2 * THREAD_SIZE with VMAP_STACK Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 08/15] powerpc/32: Add early stack overflow detection with VMAP stack Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 09/15] powerpc/8xx: Use alternative scratch registers in DTLB miss handler Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 10/15] powerpc/8xx: drop exception entries for non-existing exceptions Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 11/15] powerpc/8xx: move DataStoreTLBMiss perf handler Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 12/15] powerpc/8xx: split breakpoint exception Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 13/15] powerpc/8xx: Enable CONFIG_VMAP_STACK Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 14/15] powerpc/32s: reorganise DSI handler Christophe Leroy
2019-09-10  9:16 ` [PATCH v3 15/15] powerpc/32s: Activate CONFIG_VMAP_STACK Christophe Leroy

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