peter/spectre-meltdown-checker
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spectre-meltdown-checker
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fix issue with empty result

This commit is contained in:
Hans-Joachim Kliemeck 2018-12-16 21:00:44 +01:00
parent 486bab7a1e
commit 8b01194630
1 changed files with 4 additions and 4 deletions
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8
spectre-meltdown-checker.sh
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@ -3891,13 +3891,13 @@ check_CVE_2018_3646_linux()
l1d_xen_hypervisor=$(xl dmesg | grep 'Xen settings:' | grep 'L1D_FLUSH' | head -1) l1d_xen_hypervisor=$(xl dmesg | grep 'Xen settings:' | grep 'L1D_FLUSH' | head -1)
l1d_xen_pv_domU=$(xl dmesg | grep 'PV L1TF shadowing:' | grep 'DomU enabled' | head -1) l1d_xen_pv_domU=$(xl dmesg | grep 'PV L1TF shadowing:' | grep 'DomU enabled' | head -1)
if [ -z "$l1d_xen_hardware" ] && [ -z "$l1d_xen_hypervisor" ] && [ -z "$l1d_xen_pv_domU" ]; then if [ -n "$l1d_xen_hardware" ] && [ -n "$l1d_xen_hypervisor" ] && [ -n "$l1d_xen_pv_domU" ]; then
l1d_mode=5 l1d_mode=5
pstatus green YES "for XEN guests" pstatus green YES "for XEN guests"
elif [ -z "$l1d_xen_hardware" ] && [ -z "$l1d_xen_hypervisor" ]; then elif [ -n "$l1d_xen_hardware" ] && [ -n "$l1d_xen_hypervisor" ]; then
l1d_mode=4 l1d_mode=4
pstatus yellow YES "for XEN guests (HVM only)" pstatus yellow YES "for XEN guests (HVM only)"
elif [ -z "$l1d_xen_pv_domU" ]; then elif [ -n "$l1d_xen_pv_domU" ]; then
l1d_mode=3 l1d_mode=3
pstatus yellow YES "for XEN guests (PV only)" pstatus yellow YES "for XEN guests (PV only)"
else else
@ -3920,7 +3920,7 @@ check_CVE_2018_3646_linux()
_info_nol " * Hardware-backed L1D flush supported: " _info_nol " * Hardware-backed L1D flush supported: "
if [ "$opt_live" = 1 ]; then if [ "$opt_live" = 1 ]; then
if grep -qw flush_l1d "$procfs/cpuinfo" || [ -z "$l1d_xen_hardware" ]; then if grep -qw flush_l1d "$procfs/cpuinfo" || [ -n "$l1d_xen_hardware" ]; then
pstatus green YES "performance impact of the mitigation will be greatly reduced" pstatus green YES "performance impact of the mitigation will be greatly reduced"
else else
pstatus blue NO "flush will be done in software, this is slower" pstatus blue NO "flush will be done in software, this is slower"