This series modernises the setup of VDSO:
- Switch to using _install_special_mapping() which has replaced
install_special_mapping()
- Move datapage in front of text like most other architectures to simplify its
localisation
- Perform link time symbol resolution instead of runtime
This leads to a huge size reduction of vdso.c
Replaces the two following series:
[v1,1/9] powerpc/vdso: Remove BUG_ON() in vdso_init()
[v2,1/5] powerpc/vdso: Remove DBG()
This series is based on top of the series to the C generic VDSO.
It is functionnaly independant but some trivial merge conflict
occurs in some files. I may rebase it on top of merge if the
C generic VDSO series cannot be merged soon.
Christophe Leroy (30):
powerpc/vdso: Stripped VDSO is not needed, don't build it
powerpc/vdso: Add missing includes and clean vdso_setup_syscall_map()
powerpc/vdso: Rename syscall_map_32/64 to simplify
vdso_setup_syscall_map()
powerpc/vdso: Remove get_page() in vdso_pagelist initialization
powerpc/vdso: Remove NULL termination element in vdso_pagelist
powerpc/vdso: Refactor 32 bits and 64 bits pages setup
powerpc/vdso: Remove unnecessary ifdefs in vdso_pagelist
initialization
powerpc/vdso: Use VDSO size in arch_setup_additional_pages()
powerpc/vdso: Simplify arch_setup_additional_pages() exit
powerpc/vdso: Move to _install_special_mapping() and remove
arch_vma_name()
powerpc/vdso: Provide vdso_remap()
powerpc/vdso: Replace vdso_base by vdso
powerpc/vdso: Move vdso datapage up front
powerpc/vdso: Simplify __get_datapage()
powerpc/vdso: Remove unused \tmp param in __get_datapage()
powerpc/vdso: Retrieve sigtramp offsets at buildtime
powerpc/vdso: Use builtin symbols to locate fixup section
powerpc/vdso: Merge __kernel_sync_dicache_p5() into
__kernel_sync_dicache()
powerpc/vdso: Remove vdso32_pages and vdso64_pages
powerpc/vdso: Remove __kernel_datapage_offset
powerpc/vdso: Remove runtime generated sigtramp offsets
powerpc/vdso: Remove vdso_patches[] and associated functions
powerpc/vdso: Remove unused text member in struct lib32/64_elfinfo
powerpc/vdso: Remove symbol section information in struct
lib32/64_elfinfo
powerpc/vdso: Remove lib32_elfinfo and lib64_elfinfo
powerpc/vdso: Remove vdso_setup()
powerpc/vdso: Remove vdso_ready
powerpc/vdso: Remove DBG()
powerpc/vdso: Remove VDSO32_LBASE and VDSO64_LBASE
powerpc/vdso: Cleanup vdso.h
arch/powerpc/Makefile | 24 +-
arch/powerpc/include/asm/book3s/32/mmu-hash.h | 2 +-
arch/powerpc/include/asm/book3s/64/mmu.h | 2 +-
arch/powerpc/include/asm/elf.h | 2 +-
arch/powerpc/include/asm/mm-arch-hooks.h | 25 -
arch/powerpc/include/asm/mmu_context.h | 6 +-
arch/powerpc/include/asm/nohash/32/mmu-40x.h | 2 +-
arch/powerpc/include/asm/nohash/32/mmu-44x.h | 2 +-
arch/powerpc/include/asm/nohash/32/mmu-8xx.h | 2 +-
arch/powerpc/include/asm/nohash/mmu-book3e.h | 2 +-
arch/powerpc/include/asm/vdso.h | 29 +-
arch/powerpc/include/asm/vdso/gettimeofday.h | 4 +-
arch/powerpc/include/asm/vdso_datapage.h | 17 +-
arch/powerpc/kernel/asm-offsets.c | 6 +-
arch/powerpc/kernel/signal_32.c | 8 +-
arch/powerpc/kernel/signal_64.c | 4 +-
arch/powerpc/kernel/vdso.c | 682 +++---------------
arch/powerpc/kernel/vdso32/Makefile | 27 +-
arch/powerpc/kernel/vdso32/cacheflush.S | 19 +-
arch/powerpc/kernel/vdso32/datapage.S | 7 +-
.../powerpc/kernel/vdso32/gen_vdso_offsets.sh | 16 +
arch/powerpc/kernel/vdso32/vdso32.lds.S | 24 +-
arch/powerpc/kernel/vdso64/Makefile | 25 +-
arch/powerpc/kernel/vdso64/cacheflush.S | 18 +-
arch/powerpc/kernel/vdso64/datapage.S | 7 +-
.../powerpc/kernel/vdso64/gen_vdso_offsets.sh | 16 +
arch/powerpc/kernel/vdso64/vdso64.lds.S | 23 +-
arch/powerpc/perf/callchain_32.c | 8 +-
arch/powerpc/perf/callchain_64.c | 4 +-
29 files changed, 267 insertions(+), 746 deletions(-)
delete mode 100644 arch/powerpc/include/asm/mm-arch-hooks.h
create mode 100755 arch/powerpc/kernel/vdso32/gen_vdso_offsets.sh
create mode 100755 arch/powerpc/kernel/vdso64/gen_vdso_offsets.sh
--
2.25.0
