Merge tag 'arc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
[sfrench/cifs-2.6.git] / arch / arm64 / kernel / cpufeature.c
1 /*
2  * Contains CPU feature definitions
3  *
4  * Copyright (C) 2015 ARM Ltd.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
17  */
18
19 #define pr_fmt(fmt) "alternatives: " fmt
20
21 #include <linux/types.h>
22 #include <asm/cpu.h>
23 #include <asm/cpufeature.h>
24
25 static const struct arm64_cpu_capabilities arm64_features[] = {
26         {},
27 };
28
29 void check_cpu_capabilities(const struct arm64_cpu_capabilities *caps,
30                             const char *info)
31 {
32         int i;
33
34         for (i = 0; caps[i].desc; i++) {
35                 if (!caps[i].matches(&caps[i]))
36                         continue;
37
38                 if (!cpus_have_cap(caps[i].capability))
39                         pr_info("%s %s\n", info, caps[i].desc);
40                 cpus_set_cap(caps[i].capability);
41         }
42 }
43
44 void check_local_cpu_features(void)
45 {
46         check_cpu_capabilities(arm64_features, "detected feature");
47 }