Messages in this thread | | | Date | Thu, 6 Sep 2018 20:31:57 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 0/6] x86/alternatives: text_poke() fixes |
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On Thu, Sep 06, 2018 at 11:09:23AM -0700, Andy Lutomirski wrote: > > On Sep 6, 2018, at 10:58 AM, Nadav Amit <namit@vmware.com> wrote: > > It depends what security you want. Some may consider even the short > > time-window in which the kernel code is writable from other cores as > > insufficient for security. > > > > In addition, the set removes the need for remote TLB shootdowns that > > text_poke() - with this fix - requires. > > > > I’m personally in favor of not needing a global broadcast flush to install kprobes.
That's fine. But at that point its an optimization, not a correctness issue.
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