Messages in this thread | | | Date | Wed, 31 Jan 2018 11:01:19 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH 20/24] objtool: Another static block fail |
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On Tue, Jan 30, 2018 at 09:12:21PM -0600, Josh Poimboeuf wrote: > > Or, maybe we should just forget the whole thing and just stick with the > dynamic IBRS checks with lfence. Yes, it's less ideal for the kernel, > but adding these acrobatics to objtool also has a cost.
For now, IBRS seems off the table entirely. But no, I really don't want to have to unconditionally eat the LFENCE cost in all those sites.
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