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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-01-28 14:32:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-01-28 14:32:03 -0800 |
| commit | 05dbaf8dd8bf537d4b4eb3115ab42a5fb40ff1f5 (patch) | |
| tree | d8821d07913f49548ee1c3601ee8b0d21e0a52e2 | |
| parent | b88fe2b5dd018c2b856fd6c32b82f25033e908d4 (diff) | |
| parent | 1105ab42a84bc11c62597005f78ccad2434fbd66 (diff) | |
Merge tag 'x86-urgent-2025-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
"Fix a potential early boot crash in SEV-SNP guests, where certain
config and build environment combinations can generate absolute
references to symbols in the early boot code"
* tag 'x86-urgent-2025-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sev: Disable jump tables in SEV startup code
| -rw-r--r-- | arch/x86/coco/sev/Makefile | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/coco/sev/Makefile b/arch/x86/coco/sev/Makefile index 08de37559307..dcb06dc8b5ae 100644 --- a/arch/x86/coco/sev/Makefile +++ b/arch/x86/coco/sev/Makefile @@ -2,6 +2,10 @@ obj-y += core.o +# jump tables are emitted using absolute references in non-PIC code +# so they cannot be used in the early SEV startup code +CFLAGS_core.o += -fno-jump-tables + ifdef CONFIG_FUNCTION_TRACER CFLAGS_REMOVE_core.o = -pg endif |