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x86: Properly match CPU features in /proc/cpuinfo [BZ #27222]

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Search " YYY " and " YYY\n", instead of "YYY", to avoid matching
"XXXYYYZZZ" with "YYY".

Update /proc/cpuinfo CPU feature names:

/proc/cpuinfo                     glibc
------------------------------------------------
avx512vbmi                        AVX512_VBMI
dts                               DS
pni                               SSE3
tsc_deadline_timer                TSC_DEADLINE
This commit is contained in:
H.J. Lu
2021-01-21 11:12:30 -08:00
parent f543259500
commit 5f478eb0fb
1 changed files with 31 additions and 14 deletions
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45
sysdeps/x86/tst-cpu-features-cpuinfo.c
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@ -53,30 +53,47 @@ get_cpuinfo (void)
}
int
check_proc (const char *proc_name, int flag, int usable, const char *name)
check_proc (const char *proc_name, const char *search_name, int flag,
int usable, const char *name)
{
int found = 0;
printf ("Checking %s:\n", name);
if (!usable)
{
printf (" %s: insufficient usable info, skipped\n", name);
return 0;
}
printf (" %s: %d\n", name, flag);
if (strstr (cpu_flags, proc_name) != NULL)
char *str = strstr (cpu_flags, search_name);
if (str == NULL)
{
/* If searching for " XXX " failed, try " XXX\n". */
size_t len = strlen (search_name);
char buffer[80];
if (len >= sizeof buffer)
abort ();
memcpy (buffer, search_name, len + 1);
buffer[len - 1] = '\n';
str = strstr (cpu_flags, buffer);
}
if (str != NULL)
found = 1;
printf (" cpuinfo (%s): %d\n", proc_name, found);
if (found != flag)
printf (" *** failure ***\n");
{
if (found || usable)
printf (" *** failure ***\n");
else
{
printf (" *** missing in /proc/cpuinfo ***\n");
return 0;
}
}
return (found != flag);
}
#define CHECK_PROC(str, name) \
check_proc (#str, HAS_CPU_FEATURE (name), CPU_FEATURE_USABLE (name), \
"HAS_CPU_FEATURE (" #name ")");
check_proc (#str, " "#str" ", HAS_CPU_FEATURE (name), \
CPU_FEATURE_USABLE (name), \
"HAS_CPU_FEATURE (" #name ")")
static int
do_test (int argc, char **argv)
@ -99,7 +116,7 @@ do_test (int argc, char **argv)
fails += CHECK_PROC (avx512_bf16, AVX512_BF16);
fails += CHECK_PROC (avx512_bitalg, AVX512_BITALG);
fails += CHECK_PROC (avx512ifma, AVX512_IFMA);
fails += CHECK_PROC (avx512_vbmi, AVX512_VBMI);
fails += CHECK_PROC (avx512vbmi, AVX512_VBMI);
fails += CHECK_PROC (avx512_vbmi2, AVX512_VBMI2);
fails += CHECK_PROC (avx512_vnni, AVX512_VNNI);
fails += CHECK_PROC (avx512_vp2intersect, AVX512_VP2INTERSECT);
@ -125,7 +142,7 @@ do_test (int argc, char **argv)
fails += CHECK_PROC (dca, DCA);
fails += CHECK_PROC (de, DE);
fails += CHECK_PROC (zero_fcs_fds, DEPR_FPU_CS_DS);
fails += CHECK_PROC (ds, DS);
fails += CHECK_PROC (dts, DS);
fails += CHECK_PROC (ds_cpl, DS_CPL);
fails += CHECK_PROC (dtes64, DTES64);
fails += CHECK_PROC (est, EIST);
@ -206,7 +223,7 @@ do_test (int argc, char **argv)
fails += CHECK_PROC (ssbd, SSBD);
fails += CHECK_PROC (sse, SSE);
fails += CHECK_PROC (sse2, SSE2);
fails += CHECK_PROC (sse3, SSE3);
fails += CHECK_PROC (pni, SSE3);
fails += CHECK_PROC (sse4_1, SSE4_1);
fails += CHECK_PROC (sse4_2, SSE4_2);
fails += CHECK_PROC (sse4a, SSE4A);
@ -223,7 +240,7 @@ do_test (int argc, char **argv)
fails += CHECK_PROC (intel_pt, TRACE);
fails += CHECK_PROC (tsc, TSC);
fails += CHECK_PROC (tsc_adjust, TSC_ADJUST);
fails += CHECK_PROC (tsc_deadline, TSC_DEADLINE);
fails += CHECK_PROC (tsc_deadline_timer, TSC_DEADLINE);
fails += CHECK_PROC (tsxldtrk, TSXLDTRK);
fails += CHECK_PROC (umip, UMIP);
fails += CHECK_PROC (vaes, VAES);