[lkml]   [2021]   [Jan]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH v5 mips-next 0/9] MIPS: sections fixes & cleanup
This series hunts the problems discovered after manual enabling of
- adds the missing PAGE_ALIGNED_DATA() section affecting VDSO
placement (marked for stable);
- stops blind catching of orphan text sections with .text.*
- properly stops .eh_frame section generation.

Compile and runtime tested on MIPS32R2 CPS board with no issues
using two different toolkits:
- Binutils 2.35.1, GCC 10.2.1 (with Alpine patches);
- LLVM stack: 11.0.0 and from latest Git snapshot.

Since v4 [3]:
- new: drop redundant .text.cps-vec creation and blind inclusion
of orphan text sections via .text.* directive in;
- don't assert SIZEOF(.rel.dyn) as it's reported that it may be not
empty on certain machines and compilers (Thomas);
- align GOT table like it's done for ARM64;
- new: catch UBSAN's "unnamed data" sections in generic definitions
- collect Reviewed-bys (Kees, Nathan).

Since v3 [2]:
- fix the third patch as GNU stack emits .rel.dyn into VDSO for
some reason if .cfi_sections is specified.

Since v2 [1]:
- stop discarding .eh_frame and just prevent it from generating
- drop redundant sections assertions (Fangrui);
- place GOT table in .text instead of asserting as it's not empty
when building with LLVM (Nathan);
- catch compound literals in generic definitions when building with
- collect two Reviewed-bys (Kees).

Since v1 [0]:
- catch .got entries too as LLD may produce it (Nathan);
- check for unwanted sections to be zero-sized instead of
discarding (Fangrui).


Alexander Lobakin (9):
MIPS: add missing PAGE_ALIGNED_DATA() section
MIPS: CPS: don't create redundant .text.cps-vec section
MIPS: add ".gnu.attributes" to DISCARDS
MIPS: properly stop .eh_frame generation
MIPS: explicitly catch .rel.dyn symbols
MIPS: explicitly declare .got table catch compound literals into data and BSS catch UBSAN's "unnamed data" into data

arch/mips/Kconfig | 1 +
arch/mips/include/asm/asm.h | 18 ++++++++++++++++++
arch/mips/kernel/cps-vec.S | 1 -
arch/mips/kernel/ | 11 +++++++++--
include/asm-generic/ | 6 +++---
5 files changed, 31 insertions(+), 6 deletions(-)


 \ /
  Last update: 2021-01-10 12:56    [W:0.108 / U:2.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site