Re: [RFC PATCH 5/6] x86/alternatives: use temporary mm for text poking
From: Dave Hansen <hidden>
Date: 2018-08-29 16:37:17
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On 08/29/2018 09:32 AM, Andy Lutomirski wrote:
It's plausible that there are workloads where the current code is faster, such as where we're munmapping a single page via syscall and we'd prefer to only flush that one TLB entry even if the flush operation is slower as a result.
Yeah, I don't specifically remember testing it. But, I know I wanted to avoid throwing away thousands of TLB entries when we only want to rid ourselves of one.