1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2022 ARM Limited
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <sys/auxv.h>
#include <sys/prctl.h>
#include <asm/hwcap.h>
#include "kselftest.h"
#ifndef AT_HWCAP3
#define AT_HWCAP3 29
#endif
static int set_tagged_addr_ctrl(int val)
{
int ret;
ret = prctl(PR_SET_TAGGED_ADDR_CTRL, val, 0, 0, 0);
if (ret < 0)
ksft_print_msg("PR_SET_TAGGED_ADDR_CTRL: failed %d %d (%s)\n",
ret, errno, strerror(errno));
return ret;
}
static int get_tagged_addr_ctrl(void)
{
int ret;
ret = prctl(PR_GET_TAGGED_ADDR_CTRL, 0, 0, 0, 0);
if (ret < 0)
ksft_print_msg("PR_GET_TAGGED_ADDR_CTRL failed: %d %d (%s)\n",
ret, errno, strerror(errno));
return ret;
}
/*
* Read the current mode without having done any configuration, should
* run first.
*/
void check_basic_read(void)
{
int ret;
ret = get_tagged_addr_ctrl();
if (ret < 0) {
ksft_test_result_fail("check_basic_read\n");
return;
}
if (ret & PR_MTE_TCF_SYNC)
ksft_print_msg("SYNC enabled\n");
if (ret & PR_MTE_TCF_ASYNC)
ksft_print_msg("ASYNC enabled\n");
/* Any configuration is valid */
ksft_test_result_pass("check_basic_read\n");
}
/*
* Attempt to set a specified combination of modes.
*/
void set_mode_test(const char *name, int hwcap2, int hwcap3, int mask)
{
int ret;
if ((getauxval(AT_HWCAP2) & hwcap2) != hwcap2) {
ksft_test_result_skip("%s\n", name);
return;
}
if ((getauxval(AT_HWCAP3) & hwcap3) != hwcap3) {
ksft_test_result_skip("%s\n", name);
return;
}
ret = set_tagged_addr_ctrl(mask);
if (ret < 0) {
ksft_test_result_fail("%s\n", name);
return;
}
ret = get_tagged_addr_ctrl();
if (ret < 0) {
ksft_test_result_fail("%s\n", name);
return;
}
if ((ret & (PR_MTE_TCF_MASK | PR_MTE_STORE_ONLY)) == mask) {
ksft_test_result_pass("%s\n", name);
} else {
ksft_print_msg("Got %x, expected %x\n",
(ret & (int)PR_MTE_TCF_MASK), mask);
ksft_test_result_fail("%s\n", name);
}
}
struct mte_mode {
int mask;
int hwcap2;
int hwcap3;
const char *name;
} mte_modes[] = {
{ PR_MTE_TCF_NONE, 0, 0, "NONE" },
{ PR_MTE_TCF_SYNC, HWCAP2_MTE, 0, "SYNC" },
{ PR_MTE_TCF_ASYNC, HWCAP2_MTE, 0, "ASYNC" },
{ PR_MTE_TCF_SYNC | PR_MTE_TCF_ASYNC, HWCAP2_MTE, 0, "SYNC+ASYNC" },
{ PR_MTE_TCF_SYNC | PR_MTE_STORE_ONLY, HWCAP2_MTE, HWCAP3_MTE_STORE_ONLY, "SYNC+STONLY" },
{ PR_MTE_TCF_ASYNC | PR_MTE_STORE_ONLY, HWCAP2_MTE, HWCAP3_MTE_STORE_ONLY, "ASYNC+STONLY" },
{ PR_MTE_TCF_SYNC | PR_MTE_TCF_ASYNC | PR_MTE_STORE_ONLY, HWCAP2_MTE, HWCAP3_MTE_STORE_ONLY, "SYNC+ASYNC+STONLY" },
};
int main(void)
{
int i;
ksft_print_header();
ksft_set_plan(ARRAY_SIZE(mte_modes));
check_basic_read();
for (i = 0; i < ARRAY_SIZE(mte_modes); i++)
set_mode_test(mte_modes[i].name, mte_modes[i].hwcap2, mte_modes[i].hwcap3,
mte_modes[i].mask);
ksft_print_cnts();
return 0;
}
|
