Commit 63c66cde authored by Borislav Petkov's avatar Borislav Petkov
Browse files

x86/alternative: Use insn_decode() 



No functional changes, just simplification.

Signed-off-by: default avatarBorislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210304174237.31945-10-bp@alien8.de
parent 8c98a605

arch/x86/kernel/alternative.c

+3 −3
Original line number Diff line number Diff line
@@ -1274,15 +1274,15 @@ static void text_poke_loc_init(struct text_poke_loc *tp, void *addr, 
			       const void *opcode, size_t len, const void *emulate)

{

	struct insn insn;

	int ret;



	memcpy((void *)tp->text, opcode, len);

	if (!emulate)

		emulate = opcode;



	kernel_insn_init(&insn, emulate, MAX_INSN_SIZE);

	insn_get_length(&insn);

	ret = insn_decode(&insn, emulate, MAX_INSN_SIZE, INSN_MODE_KERN);



	BUG_ON(!insn_complete(&insn));

	BUG_ON(ret < 0);

	BUG_ON(len != insn.length);



	tp->rel_addr = addr - (void *)_stext;