Now
netbsd-8 commitmail json YAML
src/sys/arch/x86/include/specialreg.h@1.98.2.6
/
diff
/
nxr@1.98.2.6
src/sys/arch/x86/x86/identcpu.c@1.55.2.5 / diff / nxr@1.55.2.5
src/sys/arch/x86/x86/identcpu.c@1.55.2.5 / diff / nxr@1.55.2.5
Pull up following revision(s) (requested by maya in ticket #912):
sys/arch/x86/x86/identcpu.c: revision 1.79
sys/arch/x86/include/specialreg.h: revision 1.127
Disable MWAIT/MONITOR on Apollo Lake CPUs to workaround APL30 errata.
We use MWAIT/MONITOR to hatch secondary CPUs. The errata means that
the wakeup may not happen, so SMP boot fails.
Use wrmsr to disable it in hardware too, for extra paranoia.
PR port-amd64/53420,
also reported on netbsd-users by joern clausen and ssartor.
sys/arch/x86/x86/identcpu.c: revision 1.79
sys/arch/x86/include/specialreg.h: revision 1.127
Disable MWAIT/MONITOR on Apollo Lake CPUs to workaround APL30 errata.
We use MWAIT/MONITOR to hatch secondary CPUs. The errata means that
the wakeup may not happen, so SMP boot fails.
Use wrmsr to disable it in hardware too, for extra paranoia.
PR port-amd64/53420,
also reported on netbsd-users by joern clausen and ssartor.