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Subject[PULL 00/30] xtensa updates for v5.5
Date
Hi Linus,

please pull the following batch of updates for the Xtensa architecture.
There's a merge conflict in arch/xtensa/kernel/vmlinux.lds.S that has
obvious part (the conflicting part itself) and non-obvious part (another
copy of RW_DATA_SECTION macro which was renamed in c9174047b48d
("vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA")) that doesn't
conflict, but will result in build error if left unfixed. My resolution
of this conflict is available at

git://github.com/jcmvbkbc/linux-xtensa.git tags/xtensa-20191201-mainline-merge

The following changes since commit 7d194c2100ad2a6dded545887d02754948ca5241:

Linux 5.4-rc4 (2019-10-20 15:56:22 -0400)

are available in the Git repository at:

git://github.com/jcmvbkbc/linux-xtensa.git tags/xtensa-20191201

for you to fetch changes up to 9d9043f6a81713248d82d88983c06b1eaedda287:

xtensa: clean up system_call/xtensa_rt_sigreturn interaction (2019-11-29 19:37:12 -0800)

----------------------------------------------------------------
Xtensa updates for v5.5:

- add support for execute in place (XIP) kernels
- improvements in inline assembly: use named arguments and "m"
constraints where possible
- improve stack dumping
- clean up system_call code and syscall tracing
- various small fixes and cleanups

----------------------------------------------------------------
Max Filippov (27):
xtensa: update arch features
xtensa: clean up empty include files
xtensa: move XCHAL_KIO_* definitions to kmem_layout.h
xtensa: move MPU constants from .data to .ref.rodata
xtensa: fix section name for start_info
xtensa: use correct symbol for the end of .rodata
xtensa: move kernel memory layout to platform options
xtensa: add XIP kernel support
xtensa: merge .fixup with .text
xtensa: use "m" constraint instead of "a" in uaccess.h assembly
xtensa: use macros to generate *_bit and test_and_*_bit functions
xtensa: use named assembly arguments in bitops.h
xtensa: use "m" constraint instead of "a" in bitops.h assembly
xtensa: use named assembly arguments in atomic.h
xtensa: use "m" constraint instead of "a" in atomic.h assembly
xtensa: use named assembly arguments in cmpxchg.h
xtensa: use "m" constraint instead of "a" in cmpxchg.h assembly
xtensa: use "m" constraint instead of "r" in futex.h assembly
xtensa: improve stack dumping
xtensa: make stack dump size configurable
xtensa: fix TLB sanity checker
xtensa: use MEMBLOCK_ALLOC_ANYWHERE for KASAN shadow map
xtensa: drop unneeded headers from coprocessor.S
xtensa: fix syscall_set_return_value
xtensa: rearrange syscall tracing
xtensa: fix system_call interaction with ptrace
xtensa: clean up system_call/xtensa_rt_sigreturn interaction

Mike Rapoport (2):
xtensa: mm: fix PMD folding implementation
xtensa: get rid of __ARCH_USE_5LEVEL_HACK

Valentin Schneider (1):
xtensa: entry: Remove unneeded need_resched() loop

.../features/core/tracehook/arch-support.txt | 2 +-
arch/xtensa/Kconfig | 396 ++++++++++++---------
arch/xtensa/Kconfig.debug | 7 +
arch/xtensa/Makefile | 3 +-
arch/xtensa/boot/Makefile | 5 +
arch/xtensa/configs/xip_kc705_defconfig | 119 +++++++
arch/xtensa/include/asm/Kbuild | 2 +
arch/xtensa/include/asm/atomic.h | 124 +++----
arch/xtensa/include/asm/bitops.h | 323 +++++------------
arch/xtensa/include/asm/cache.h | 6 +
arch/xtensa/include/asm/cmpxchg.h | 71 ++--
arch/xtensa/include/asm/fixmap.h | 8 +-
arch/xtensa/include/asm/futex.h | 10 +-
arch/xtensa/include/asm/hw_irq.h | 14 -
arch/xtensa/include/asm/initialize_mmu.h | 3 +-
arch/xtensa/include/asm/kmem_layout.h | 29 ++
arch/xtensa/include/asm/page.h | 11 +
arch/xtensa/include/asm/pgtable.h | 4 -
arch/xtensa/include/asm/processor.h | 3 +-
arch/xtensa/include/asm/syscall.h | 4 +-
arch/xtensa/include/asm/uaccess.h | 16 +-
arch/xtensa/include/asm/user.h | 20 --
arch/xtensa/include/asm/vectors.h | 44 +--
arch/xtensa/kernel/coprocessor.S | 10 +-
arch/xtensa/kernel/entry.S | 22 +-
arch/xtensa/kernel/head.S | 13 +-
arch/xtensa/kernel/process.c | 2 +
arch/xtensa/kernel/ptrace.c | 18 +-
arch/xtensa/kernel/setup.c | 7 +
arch/xtensa/kernel/signal.c | 4 +-
arch/xtensa/kernel/traps.c | 27 +-
arch/xtensa/kernel/vmlinux.lds.S | 58 ++-
arch/xtensa/mm/fault.c | 16 +-
arch/xtensa/mm/init.c | 4 +-
arch/xtensa/mm/kasan_init.c | 12 +-
arch/xtensa/mm/mmu.c | 4 +-
arch/xtensa/mm/tlb.c | 14 +-
37 files changed, 772 insertions(+), 663 deletions(-)
create mode 100644 arch/xtensa/configs/xip_kc705_defconfig
delete mode 100644 arch/xtensa/include/asm/hw_irq.h
delete mode 100644 arch/xtensa/include/asm/user.h

Thanks.
-- Max

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