[tip: objtool/core] objtool/x86: Remove 0xea hack

tip-bot2 for Peter Zijlstra
2025-10-14T11:48:02Z

The following commit has been merged into the objtool/core branch of tip:

Commit-ID: c5df4e1ab8c00c4dc13094fa44e219bc48d910f4
Gitweb: https://git.kernel.org/tip/c5df4e1ab8c00c4dc13094fa44e219bc48d910f4
Author: Peter Zijlstra <peterz@infradead.org>
AuthorDate: Wed, 24 Sep 2025 15:22:46 +02:00
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Tue, 14 Oct 2025 13:43:10 +02:00

objtool/x86: Remove 0xea hack

Was properly fixed in the decoder with commit 4b626015e1bf ("x86/insn:
Stop decoding i64 instructions in x86-64 mode at opcode")

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
---
tools/objtool/arch/x86/decode.c | 9 ---------
1 file changed, 9 deletions(-)

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index 0ad5cc7..ce16fb2 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -189,15 +189,6 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
op2 = ins.opcode.bytes[1];
op3 = ins.opcode.bytes[2];

- /*
- * XXX hack, decoder is buggered and thinks 0xea is 7 bytes long.
- */
- if (op1 == 0xea) {
- insn->len = 1;
- insn->type = INSN_BUG;
- return 0;
- }
-
if (ins.rex_prefix.nbytes) {
rex = ins.rex_prefix.bytes[0];
rex_w = X86_REX_W(rex) >> 3;