Merge tag 'x86-urgent-2026-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

3f978187 · Linus Torvalds <[email protected]> · 2026-07-26 08:52:38 -07:00

Pull x86 fix from Ingo Molnar:

 - Disable jump/lookup tables in the x86 boot decompressor code
   a bit more widely, because newer versions of LLVM started
   optimizing it a bit better and introduced run-time relocations
   in PIE code (Nathan Chancellor)

* tag 'x86-urgent-2026-07-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/boot/compressed: Disable jump tables

Commit: 3f97818796aa6d6bcdb50b189554562fc475e4bf
Parents: a6671109 · 4a9ec5ec

Merge commit. Changes below are compared with the first parent: a6671109.

Changes

1 files changed · +1 −0

File	Status	Add	Del	Content
arch/x86/boot/compressed/Makefile	modified	+1	−0	View file

arch/x86/boot/compressed/Makefile

View file

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 07e0e64..06934f9 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -27,6 +27,7 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
 KBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS)
 KBUILD_CFLAGS += $(CC_FLAGS_DIALECT)
 KBUILD_CFLAGS += -fno-strict-aliasing -fPIE
+KBUILD_CFLAGS += -fno-jump-tables
 KBUILD_CFLAGS += -Wundef
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
 cflags-$(CONFIG_X86_32) := -march=i386