Will be joining in ~ 5 mins. Getting Chromium set up here. ----- Original Message ----- > From: "Jiri Kosina" <jikos@xxxxxxxxxx> > To: "Josh Poimboeuf" <jpoimboe@xxxxxxxxxx> > Cc: "Peter Zijlstra" <peterz@xxxxxxxxxxxxx>, "Heiko Carstens" <heiko.carstens@xxxxxxxxxx>, "Paul Mackerras" > <paulus@xxxxxxxxx>, "H . Peter Anvin" <hpa@xxxxxxxxx>, "Ingo Molnar" <mingo@xxxxxxxxxx>, "Andrea Arcangeli" > <aarcange@xxxxxxxxxx>, linux-s390@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, "Will Deacon" <will.deacon@xxxxxxx>, "Linus > Torvalds" <torvalds@xxxxxxxxxxxxxxxxxxxx>, "Catalin Marinas" <catalin.marinas@xxxxxxx>, "Waiman Long" > <longman@xxxxxxxxxx>, linux-arch@xxxxxxxxxxxxxxx, "Jon Masters" <jcm@xxxxxxxxxx>, "Borislav Petkov" <bp@xxxxxxxxx>, > "Andy Lutomirski" <luto@xxxxxxxxxx>, "Thomas Gleixner" <tglx@xxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, > "Greg Kroah-Hartman" <gregkh@xxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, "Tyler Hicks" <tyhicks@xxxxxxxxxxxxx>, > "Martin Schwidefsky" <schwidefsky@xxxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx > Sent: Thursday, April 4, 2019 2:49:05 PM > Subject: Re: [PATCH RFC 3/5] powerpc/speculation: Add support for 'cpu_spec_mitigations=' cmdline options > On Thu, 4 Apr 2019, Josh Poimboeuf wrote: > >> Configure powerpc CPU runtime speculation bug mitigations in accordance >> with the 'cpu_spec_mitigations=' cmdline options. This affects >> Meltdown, Spectre v1, Spectre v2, and Speculative Store Bypass. > [ ... snip ... ] >> - if (!no_nospec) >> + if (!no_nospec && cpu_spec_mitigations != CPU_SPEC_MITIGATIONS_OFF) > > '!no_nospec' is something that I am sure will come back to hunt me in my > bad dreams. > > But that's been there already, and fixing it is out of scope of this > patch. Other than that, as discussed previously -- I really like this new > global option. Feel free to add > > Reviewed-by: Jiri Kosina <jkosina@xxxxxxx> > > for the whole set. > > Thanks, > > -- > Jiri Kosina > SUSE Labs
