Messages in this thread | | | Date | Tue, 19 Jun 2018 11:35:52 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/microcode/intel: Ensure new microcode processor flags match with cpu's pf |
| |
On Tue, Jun 19, 2018 at 05:24:20PM +0800, Zhenzhong Duan wrote: > On 2018/6/19 17:12, Borislav Petkov wrote: > > On Tue, Jun 19, 2018 at 12:49:40PM +0800, Zhenzhong Duan wrote: > > > Imagine kernel already found a microcode blob A with extended sig/pf > > > matching current cpu, then another microcode B is checked which doesn't > > > match current cpu... > > Do you see the > > > > if (!microcode_matches(mc_header, uci->cpu_sig.sig)) { > > > > call a couple of lines earlier? > Sure, but it didn't ensure a match in stepping and pf, is that expected?
Do you see the
if (!has_newer_microcode(data, uci->cpu_sig.sig, uci->cpu_sig.pf, uci->cpu_sig.rev))
a couple lines later?
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
| |