peter/spectre-meltdown-checker
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spectre-meltdown-checker
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remove duplicates 

Only list processors which speculate and are immune to variant 4.
Avoids duplication with non-speculating CPUs listed in is_cpu_specex_free()
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Rob Gill 2018-05-27 19:54:25 +10:00 committed by GitHub
parent 060e63d615
commit d5840a9f87
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 24 deletions
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spectre-meltdown-checker.sh
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@ -444,12 +444,9 @@ is_cpu_ssb_free()
{
# return true (0) if the CPU isn't affected by speculative store bypass, false (1) if it does.
# if it's not in the list we know, return false (1).
# source: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/cpu/common.c#n945
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_PINEVIEW },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_LINCROFT },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_PENWELL },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CLOVERVIEW },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_CEDARVIEW },
# source1: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/cpu/common.c#n945
# source2: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/tree/arch/x86/kernel/cpu/common.c
# Only list CPUs that speculate but are immune, to avoid duplication of cpus listed in is_cpu_specex_free()
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT1 },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_AIRMONT },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT2 },
@ -457,43 +454,30 @@ is_cpu_ssb_free()
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_CORE_YONAH },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_XEON_PHI_KNL },
#{ X86_VENDOR_INTEL, 6, INTEL_FAM6_XEON_PHI_KNM },
#{ X86_VENDOR_CENTAUR, 5, },
#{ X86_VENDOR_INTEL, 5, },
#{ X86_VENDOR_NSC, 5, },
#{ X86_VENDOR_AMD, 0x12, },
#{ X86_VENDOR_AMD, 0x11, },
#{ X86_VENDOR_AMD, 0x10, },
#{ X86_VENDOR_AMD, 0xf, },
#{ X86_VENDOR_ANY, 4, },
parse_cpu_details
if is_intel; then
if [ "$cpu_family" = 6 ]; then
if [ "$cpu_model" = "$INTEL_FAM6_ATOM_AIRMONT" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_CEDARVIEW" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_CLOVERVIEW" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_LINCROFT" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_MERRIFIELD" ]; then
return 0
elif [ "$cpu_model" = "$INTEL_FAM6_ATOM_PENWELL" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_PINEVIEW" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_SILVERMONT1" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_SILVERMONT2" ] || \
[ "$cpu_model" = "$INTEL_FAM6_ATOM_SILVERMONT1" ]; then
[ "$cpu_model" = "$INTEL_FAM6_ATOM_MERRIFIELD" ]; then
return 0
elif [ "$cpu_model" = "$INTEL_FAM6_CORE_YONAH" ] || \
[ "$cpu_model" = "$INTEL_FAM6_XEON_PHI_KNL" ] || \
[ "$cpu_model" = "$INTEL_FAM6_XEON_PHI_KNM" ]; then
return 0
fi
elif [ "$cpu_family" = 5 ]; then
return 0
fi
fi
if is_amd; then
if [ "$cpu_family" = "18" ] || \ # family 0x12
[ "$cpu_family" = "17" ] || \ # family 0x11
[ "$cpu_family" = "16" ] || \ # family 0x10
[ "$cpu_family" = "15" ]; then # family 0xf
if [ "$cpu_family" = "18" ] || \
[ "$cpu_family" = "17" ] || \
[ "$cpu_family" = "16" ] || \
[ "$cpu_family" = "15" ]; then
return 0
fi
fi