On 11/20/2018 04:44 PM, Jiri Kosina wrote: > On Tue, 20 Nov 2018, Tim Chen wrote: > >> diff --git a/Documentation/admin-guide/kernel-parameters.txt >> b/Documentation/admin-guide/kernel-parameters.txt >> index d2255f7..89b193c 100644 >> --- a/Documentation/admin-guide/kernel-parameters.txt >> +++ b/Documentation/admin-guide/kernel-parameters.txt >> @@ -4227,12 +4227,17 @@ >> and STIBP mitigations against Spectre V2 >> attacks. >> If the CPU is not vulnerable, "off" is >> selected. >> If the CPU is vulnerable, the default >> mitigation >> - is "prctl". >> + is architecture and Kconfig dependent. See >> below. >> prctl - Enable mitigations per thread by restricting >> indirect branch speculation via prctl. >> Mitigation for a thread is not enabled by >> default to >> avoid mitigation overhead. The state of >> of the control is inherited on fork. >> + seccomp - Same as "prctl" above, but all seccomp threads >> + will disable SSB unless they explicitly opt >> out. > > As Dave already pointed out elsewhere -- the "SSB" here is probably a > copy/paste error. It should read something along the lines of "... will > restrict indirect branch speculation ..." >
Thanks. Should have caught it. Tim
