Author: markj
Date: Tue Aug 14 19:21:31 2018
New Revision: 337813
URL: https://svnweb.freebsd.org/changeset/base/337813
Log:
Help ensure that the copy loop doesn't get converted to a memcpy() call.
Reported and reviewed by: kib
X-MFC with: r337715
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/x86/x86/ucode.c
Modified: head/sys/x86/x86/ucode.c
==============================================================================
--- head/sys/x86/x86/ucode.c Tue Aug 14 19:12:45 2018 (r337812)
+++ head/sys/x86/x86/ucode.c Tue Aug 14 19:21:31 2018 (r337813)
@@ -346,7 +346,7 @@ ucode_load_bsp(uintptr_t free)
addr = map_ucode(free, len);
/* We can't use memcpy() before ifunc resolution. */
for (i = 0; i < len; i++)
- addr[i] = match[i];
+ addr[i] = ((volatile uint8_t *)match)[i];
match = addr;
if (loader->load(match, false) == 0) {
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