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enh: check_cpu: look for cap_stibp and cap_autoibrs

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Stéphane Lesimple
2026-03-31 22:08:02 +02:00
parent b062fe2184
commit e09d0cf221
1 changed files with 18 additions and 3 deletions
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21
src/libs/400_hw_check.sh
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@@ -481,26 +481,27 @@ check_cpu() {
pr_info_nol " * CPU indicates STIBP capability: "
# intel: A processor supports STIBP if it enumerates CPUID (EAX=7H,ECX=0):EDX[27] as 1
# amd: 8000_0008 EBX[15]=1
cap_stibp=''
if is_intel; then
read_cpuid 0x7 0x0 $EDX 27 1 1
ret=$?
if [ $ret = $READ_CPUID_RET_OK ]; then
pstatus green YES "Intel STIBP feature bit"
#cpuid_stibp='Intel STIBP'
cap_stibp='Intel STIBP'
fi
elif is_amd; then
read_cpuid 0x80000008 0x0 $EBX 15 1 1
ret=$?
if [ $ret = $READ_CPUID_RET_OK ]; then
pstatus green YES "AMD STIBP feature bit"
#cpuid_stibp='AMD STIBP'
cap_stibp='AMD STIBP'
fi
elif is_hygon; then
read_cpuid 0x80000008 0x0 $EBX 15 1 1
ret=$?
if [ $ret = $READ_CPUID_RET_OK ]; then
pstatus green YES "HYGON STIBP feature bit"
#cpuid_stibp='HYGON STIBP'
cap_stibp='HYGON STIBP'
fi
else
ret=invalid
@@ -1006,6 +1007,20 @@ check_cpu() {
else
pstatus yellow UNKNOWN "$ret_read_cpuid_msg"
fi
pr_info_nol " * CPU indicates AutoIBRS capability: "
cap_autoibrs=''
read_cpuid 0x80000021 0x0 $EAX 8 1 1
ret=$?
if [ $ret = $READ_CPUID_RET_OK ]; then
pstatus green YES
cap_autoibrs=1
elif [ $ret = $READ_CPUID_RET_KO ]; then
pstatus yellow NO
cap_autoibrs=0
else
pstatus yellow UNKNOWN "$ret_read_cpuid_msg"
fi
fi
pr_info_nol " * CPU supports Transactional Synchronization Extensions (TSX): "