/*
* is_cpu_clflushopt_present -- checks if CLFLUSHOPT instruction is supported
*/
int
is_cpu_clflushopt_present(void)
{
if (!is_cpu_genuine_intel())
return 0;
int ret = is_cpu_feature_present(0x7, EBX_IDX, bit_CLFLUSHOPT);
LOG(4, "CLFLUSHOPT %ssupported", ret == 0 ? "not " : "");
return ret;
}
/*
* is_cpu_clwb_present -- checks if CLWB instruction is supported
*/
int
is_cpu_clwb_present(void)
{
if (!is_cpu_genuine_intel())
return 0;
int ret = is_cpu_feature_present(0x7, EBX_IDX, bit_CLWB);
LOG(4, "CLWB %ssupported", ret == 0 ? "not " : "");
return ret;
}
/*
* is_cpu_pcommit_present -- checks if PCOMMIT instruction is supported
*/
int is_cpu_pcommit_present(void) {
unsigned cpuinfo[4] = {0};
if (!is_cpu_genuine_intel()) return 0;
cpuid(0x7, 0x0, cpuinfo);
int ret = (cpuinfo[EBX_IDX] & bit_PCOMMIT) != 0;
return ret;
}
