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Subject[PATCH v5 00/17] Enable CONFIG_VMAP_STACK on PPC32
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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

v4:
- Fixed build failure with CONFIG_KVM (patch 14)
- Fixed boot failure with pmac32_defconfig+VMAP_STACK+KVM (new patch 15)
- Fixed crash with altivec and fpu (patch 16)

v5:
- Reduced ifdefs around tophys/tovirt by using macros (patch 5)
- Reorganised stack overflow handling, making it independent of the existing one which could go away in another series (patch 7)
- Added vmapped stacks for interrupts (new patch 8)

Christophe Leroy (17):
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/32: Use vmapped stacks for interrupts
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: avoid crossing page boundary while changing SRR0/1.
powerpc/32s: Enable CONFIG_VMAP_STACK

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 | 29 +++---
arch/powerpc/kernel/fpu.S | 3 +
arch/powerpc/kernel/head_32.S | 61 ++++++-----
arch/powerpc/kernel/head_32.h | 178 +++++++++++++++++++++++++++----
arch/powerpc/kernel/head_40x.S | 2 +
arch/powerpc/kernel/head_8xx.S | 184 +++++++++++++++------------------
arch/powerpc/kernel/head_booke.h | 2 +
arch/powerpc/kernel/head_fsl_booke.S | 1 +
arch/powerpc/kernel/irq.c | 22 ++++
arch/powerpc/kernel/setup.h | 2 +-
arch/powerpc/kernel/setup_32.c | 17 ++-
arch/powerpc/kernel/setup_64.c | 2 +-
arch/powerpc/kernel/traps.c | 9 ++
arch/powerpc/kernel/vector.S | 3 +
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 +
22 files changed, 435 insertions(+), 182 deletions(-)

--
2.13.3

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