Messages in this thread | | | Subject | Re: [Patch v4 07/18] x86/smt: Convert cpu_smt_control check to cpu_smt_enabled static key | From | Tim Chen <> | Date | Wed, 7 Nov 2018 17:43:10 -0800 |
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On 11/03/2018 11:29 AM, Thomas Gleixner wrote: > Tim, > > On Tue, 30 Oct 2018, Tim Chen wrote: > >> Change the SMT code paths check from using cpu_smt_control to >> cpu_smt_enabled static key. This saves a branching check. > > and adds extra size to the kernel for the patching. The only reason why it > would make sense for kvm is that then the EXPORT of cpu_smt_control can go > away, which takes more space than the patch data. >
Should I just drop this patch then and only replace sched_smt_present with cpu_smt_enabled?
Tim
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