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e48a12e546
linux/arch/x86
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Ingo Molnar e48a12e546 jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining 
In randconfig testing, certain UBSAN and CC Kconfig combinations
with GCC 10.3.0:

  CONFIG_X86_32=y

  CONFIG_CC_OPTIMIZE_FOR_SIZE=y

  CONFIG_UBSAN=y
  # CONFIG_UBSAN_TRAP is not set
  # CONFIG_UBSAN_BOUNDS is not set
  CONFIG_UBSAN_SHIFT=y
  # CONFIG_UBSAN_DIV_ZERO is not set
  CONFIG_UBSAN_UNREACHABLE=y
  CONFIG_UBSAN_BOOL=y
  # CONFIG_UBSAN_ENUM is not set
  # CONFIG_UBSAN_ALIGNMENT is not set
  # CONFIG_UBSAN_SANITIZE_ALL is not set

... produce this build warning (and build error if
CONFIG_SECTION_MISMATCH_WARN_ONLY=y is set):

  WARNING: modpost: vmlinux.o(.text+0x4c1cc): Section mismatch in reference from the function __jump_label_transform() to the function .init.text:text_poke_early()
  The function __jump_label_transform() references
  the function __init text_poke_early().
  This is often because __jump_label_transform lacks a __init
  annotation or the annotation of text_poke_early is wrong.

  ERROR: modpost: Section mismatches detected.

The problem is that __jump_label_transform() gets uninlined by GCC,
despite there being only a single local scope user of the 'static inline'
function.

Mark the function __always_inline instead, to work around this compiler
bug/artifact.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2021-07-13 06:32:05 +02:00
..
boot Modernize the genimage.sh script, add a 'hdimage' target and EFI support. 2021-06-28 13:05:09 -07:00
configs
crypto crypto: x86/curve25519 - fix cpu feature checking logic in mod_exit 2021-06-11 15:03:29 +08:00
entry arch, mm: wire up memfd_secret system call where relevant 2021-07-08 11:48:21 -07:00
events A fix and a hardware-enablement addition: 2021-07-11 11:10:48 -07:00
hyperv Drivers: hv: Move Hyper-V extended capability check to arch neutral code 2021-06-05 10:22:34 +00:00
ia32 binfmt: remove in-tree usage of MAP_EXECUTABLE 2021-06-29 10:53:50 -07:00
include mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t * 2021-07-08 11:48:22 -07:00
kernel jump_labels: Mark __jump_label_transform() as __always_inlined to work around aggressive compiler un-inlining 2021-07-13 06:32:05 +02:00
kvm Fixes and improvements for FPU handling on x86: 2021-07-07 11:12:01 -07:00
lib - Differentiate the type of exception the #VC handler raises depending 2021-06-28 11:29:12 -07:00
math-emu x86/math-emu: Rename frstor() 2021-06-23 18:16:33 +02:00
mm mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t * 2021-07-08 11:48:22 -07:00
net bpf, x86: Fix extable offset calculation 2021-06-28 15:11:43 +02:00
pci pci-v5.14-changes 2021-07-08 12:06:20 -07:00
platform EFI changes: two driver API cleanups, and a log message tweak. 2021-06-28 11:34:16 -07:00
power - turn the stack canary into a normal __percpu variable on 32-bit which 2021-04-27 17:45:09 -07:00
purgatory kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
ras
realmode A single ELF format fix for a section flags mismatch bug that breaks 2021-06-28 11:35:55 -07:00
tools x86/tools/insn_sanity: Convert to insn_decode() 2021-03-15 12:21:11 +01:00
um x86/uml/syscalls: Remove array index from syscall initializers 2021-05-25 16:59:23 +02:00
video
xen kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
.gitignore
Kbuild
Kconfig Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug
Makefile Kbuild updates for v5.14 2021-07-10 11:01:38 -07:00
Makefile_32.cpu
Makefile.um um: allow not setting extra rpaths in the linux binary 2021-06-17 21:54:15 +02:00