Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration

[RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-10
[RFC PATCH 1/2] x86: Introduce sync_core_before_usermode · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-10
[RFC PATCH 2/2] Fix: x86: Add missing core serializing instruction on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-10
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Linus Torvalds <torvalds@linux-foundation.org> · 2017-11-10
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-10
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Linus Torvalds <torvalds@linux-foundation.org> · 2017-11-10
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-13
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Linus Torvalds <torvalds@linux-foundation.org> · 2017-11-13
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Avi Kivity <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Avi Kivity <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Peter Zijlstra <peterz@infradead.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Peter Zijlstra <peterz@infradead.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Avi Kivity <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Mathieu Desnoyers <mathieu.desnoyers@efficios.com> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Linus Torvalds <torvalds@linux-foundation.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Andy Lutomirski <luto@kernel.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Thomas Gleixner <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Andy Lutomirski <luto@kernel.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Peter Zijlstra <peterz@infradead.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Daniel Bristot de Oliveira <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Peter Zijlstra <peterz@infradead.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Daniel Bristot de Oliveira <hidden> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Peter Zijlstra <peterz@infradead.org> · 2017-11-14
Re: [RFC PATCH 0/2] x86: Fix missing core serialization on migration · Daniel Bristot de Oliveira <hidden> · 2017-11-14

From: Peter Zijlstra <hidden>
Date: 2017-11-14 17:42:04
Also in: lkml

On Tue, Nov 14, 2017 at 06:17:13PM +0100, Daniel Bristot de Oliveira wrote:

IIRC, if the dest cpu is idle and the system is with idle=poll, no IPI
is fired as well, but that is not a very common case.

You're thinking about wake from idle? That is almost always without IPI,
even without idle=poll.

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