linux-kernel - [patch V9 00/39] x86/entry: Rework leftovers (was part V)

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Message-Id: <20200521200513.656533920@linutronix.de>
Date:   Thu, 21 May 2020 22:05:13 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Andy Lutomirski <luto@...nel.org>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        X86 ML <x86@...nel.org>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Alexandre Chartre <alexandre.chartre@...cle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Petr Mladek <pmladek@...e.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Brian Gerst <brgerst@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Will Deacon <will@...nel.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        Wei Liu <wei.liu@...nel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Jason Chen CJ <jason.cj.chen@...el.com>,
        Zhao Yakui <yakui.zhao@...el.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: [patch V9 00/39] x86/entry: Rework leftovers (was part V)

Folks!

This is V9 of the rework series. V7 and V8 were never posted but I used the
version numbers for tags while fixing up 0day complaints. The last posted
version was V6 which can be found here:

  https://lore.kernel.org/r/20200515234547.710474468@linutronix.de

The V9 leftover series is based on:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/entry

That branch contains the merged part 1-4 of the original 5 part series.

V9 has the following changes vs. V6:

   - Rebase on tip x86/entry

   - Simplified the hardware latency detector changes by moving the
     invocation to the right place in nmi_enter/exit() and annotate it.

   - Reworked the conditional RCU handling so it is now used
     unconditionally everywhere. That simplified the idtentry_enter/exit
     code significantly and also allowed to simplify the XEN hypercall
     voluntary preemption handling.

   - Moved the run on irq stack logic into an inline to avoid having the
     same conditionals all over the place and fixed up the relevant places.

   - Picked up Acked-by and Reviewed-by tags where appropriate.

The full series is available from:

  git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-v9-the-rest

If we agree on the RCU changes, then these will be applied into the core/rcu branch
first so Paul can pick them up to avoid the next conflict horrors.

Thanks,

	tglx