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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-26 10:42:40 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-11-26 10:42:40 -0800 |
commit | 1d87200446f1d10dfe9672ca8edb027a82612f8c (patch) | |
tree | 45cc71ff8e4d1bcde9b07ce8203277f2b8982941 /arch/xtensa | |
parent | 5c4a1c090d8676d8b84e2ac40671602be44afdfc (diff) | |
parent | f01ec4fca8207e31b59a010c3de679c833f3a877 (diff) | |
download | linux-stable-1d87200446f1d10dfe9672ca8edb027a82612f8c.tar.gz linux-stable-1d87200446f1d10dfe9672ca8edb027a82612f8c.tar.bz2 linux-stable-1d87200446f1d10dfe9672ca8edb027a82612f8c.zip |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"The main changes in this cycle were:
- Cross-arch changes to move the linker sections for NOTES and
EXCEPTION_TABLE into the RO_DATA area, where they belong on most
architectures. (Kees Cook)
- Switch the x86 linker fill byte from x90 (NOP) to 0xcc (INT3), to
trap jumps into the middle of those padding areas instead of
sliding execution. (Kees Cook)
- A thorough cleanup of symbol definitions within x86 assembler code.
The rather randomly named macros got streamlined around a
(hopefully) straightforward naming scheme:
SYM_START(name, linkage, align...)
SYM_END(name, sym_type)
SYM_FUNC_START(name)
SYM_FUNC_END(name)
SYM_CODE_START(name)
SYM_CODE_END(name)
SYM_DATA_START(name)
SYM_DATA_END(name)
etc - with about three times of these basic primitives with some
label, local symbol or attribute variant, expressed via postfixes.
No change in functionality intended. (Jiri Slaby)
- Misc other changes, cleanups and smaller fixes"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (67 commits)
x86/entry/64: Remove pointless jump in paranoid_exit
x86/entry/32: Remove unused resume_userspace label
x86/build/vdso: Remove meaningless CFLAGS_REMOVE_*.o
m68k: Convert missed RODATA to RO_DATA
x86/vmlinux: Use INT3 instead of NOP for linker fill bytes
x86/mm: Report actual image regions in /proc/iomem
x86/mm: Report which part of kernel image is freed
x86/mm: Remove redundant address-of operators on addresses
xtensa: Move EXCEPTION_TABLE to RO_DATA segment
powerpc: Move EXCEPTION_TABLE to RO_DATA segment
parisc: Move EXCEPTION_TABLE to RO_DATA segment
microblaze: Move EXCEPTION_TABLE to RO_DATA segment
ia64: Move EXCEPTION_TABLE to RO_DATA segment
h8300: Move EXCEPTION_TABLE to RO_DATA segment
c6x: Move EXCEPTION_TABLE to RO_DATA segment
arm64: Move EXCEPTION_TABLE to RO_DATA segment
alpha: Move EXCEPTION_TABLE to RO_DATA segment
x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment
x86/vmlinux: Actually use _etext for the end of the text segment
vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA
...
Diffstat (limited to 'arch/xtensa')
-rw-r--r-- | arch/xtensa/kernel/vmlinux.lds.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index 943f10639a93..0043d5858f14 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -14,6 +14,8 @@ * Joe Taylor <joe@tensilica.com, joetylr@yahoo.com> */ +#define RO_EXCEPTION_TABLE_ALIGN 16 + #include <asm-generic/vmlinux.lds.h> #include <asm/page.h> #include <asm/thread_info.h> @@ -124,18 +126,16 @@ SECTIONS . = ALIGN(16); - RODATA + RO_DATA(4096) /* Relocation table */ .fixup : { *(.fixup) } - EXCEPTION_TABLE(16) - NOTES /* Data section */ _sdata = .; - RW_DATA_SECTION(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE) + RW_DATA(XCHAL_ICACHE_LINESIZE, PAGE_SIZE, THREAD_SIZE) _edata = .; /* Initialization code and data: */ |