On Sun, Jan 21, 2018 at 12:43:43PM +0000, Nick Lowe wrote: > Hi, > > On an APU2C4 which uses a AMD GX-412TC SOC, this is incorrectly > flagged as being vulnerable to Meltdown in 4.9.77 > > root@LEDE:/sys/devices/system/cpu/vulnerabilities# cat meltdown > Vulnerable > > root@LEDE:/sys/devices/system/cpu/vulnerabilities# cat /proc/cpuinfo > processor : 0 > vendor_id : AuthenticAMD > cpu family : 22 > model : 48 > model name : AMD GX-412TC SOC > stepping : 1 > microcode : 0x7030105 > cpu MHz : 600.000 > cache size : 2048 KB > physical id : 0 > siblings : 4 > core id : 0 > cpu cores : 4 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 13 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt > pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc > extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor ssse3 cx16 > sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm > extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit > wdt topoext perfctr_nb bpext ptsc perfctr_l2 cpb hw_pstate retpoline > retpoline_amd vmmcall bmi1 xsaveopt arat npt lbrv svm_lock nrip_save > tsc_scale flushbyasid decodeassists pausefilter pfthreshold > overflow_recov > bugs : fxsave_leak sysret_ss_attrs null_seg cpu_meltdown spectre_v1 spectre_v2 > bogomips : 1996.12 > TLB size : 1024 4K pages > clflush size : 64 > cache_alignment : 64 > address sizes : 40 bits physical, 48 bits virtual > power management: ts ttp tm 100mhzsteps hwpstate cpb acc_power [13] > > <snip> What does the latest 4.14.y release, or Linus's tree show for this CPU? thanks, greg k-h