From 27f4c235eeab665cf6de59764ebc398af5cb66bd Mon Sep 17 00:00:00 2001
From: Mark Johnston <markj@FreeBSD.org>
Date: Tue, 14 Aug 2018 14:50:06 +0000
Subject: [PATCH] Explain why we aren't using memcpy().

Reported by:	jmg
X-MFC with:	r337715
Sponsored by:	The FreeBSD Foundation
---
 sys/x86/x86/ucode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/x86/x86/ucode.c b/sys/x86/x86/ucode.c
index 319debe9261f..ec1d51c625e4 100644
--- a/sys/x86/x86/ucode.c
+++ b/sys/x86/x86/ucode.c
@@ -344,6 +344,7 @@ ucode_load_bsp(uintptr_t free)
 		match = loader->match(fileaddr, &len);
 		if (match != NULL) {
 			addr = map_ucode(free, len);
+			/* We can't use memcpy() before ifunc resolution. */
 			for (i = 0; i < len; i++)
 				addr[i] = match[i];
 			match = addr;