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From: David Woodhouse <dwmw2@infradead.org>
To: Thomas Gleixner <tglx@linutronix.de>,
	Chandler Carruth <chandlerc@google.com>
Cc: karahmed@amazon.de, x86@kernel.org, kvm@vger.kernel.org,
	torvalds@linux-foundation.org, pbonzini@redhat.com,
	linux-kernel@vger.kernel.org, bp@alien8.de, peterz@infradead.org,
	jmattson@google.com, rkrcmar@redhat.com,
	arjan.van.de.ven@intel.com, dave.hansen@intel.com,
	mingo@kernel.org
Subject: Re: [PATCH v3 4/4] x86/retpoline: Support retpoline build with Clang
Date: Tue, 20 Feb 2018 08:45:51 +0000	[thread overview]
Message-ID: <1519116351.7876.104.camel@infradead.org> (raw)
In-Reply-To: <alpine.DEB.2.21.1802200935300.24268@nanos.tec.linutronix.de>

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On Tue, 2018-02-20 at 09:36 +0100, Thomas Gleixner wrote:
> On Mon, 19 Feb 2018, David Woodhouse wrote:
> 
> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
> 
> > 
> > +/* Clang doesn't have a way to turn it off per-function, yet. */
>
> Is that going to happen in the foreseable future? Hmm, why am I asking,
> clang is going to break anyway once we require asm-gotos hard.

It's only minor optimisation so I told them there was no massive
urgency to get it implemented. Unlike asm-goto.

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  reply	other threads:[~2018-02-20  8:46 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-19 10:50 [PATCH v3 0/4] Speculation control improvements David Woodhouse
2018-02-19 10:50 ` [PATCH v3 1/4] x86/speculation: Use IBRS if available before calling into firmware David Woodhouse
2018-02-20  7:44   ` Thomas Gleixner
2018-02-20 10:29   ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-02-19 10:50 ` [PATCH v3 2/4] x86/speculation: Support "Enhanced IBRS" on future CPUs David Woodhouse
2018-02-20  8:31   ` Thomas Gleixner
2018-02-20  8:53     ` David Woodhouse
2018-02-20 10:37       ` Thomas Gleixner
2018-02-20 10:42         ` Thomas Gleixner
2018-02-20 11:22           ` David Woodhouse
2018-02-20 11:28             ` Paolo Bonzini
2018-02-26 19:55             ` Thomas Gleixner
2018-02-20 11:26   ` Paolo Bonzini
2018-02-19 10:50 ` [PATCH v3 3/4] Revert "x86/retpoline: Simplify vmexit_fill_RSB()" David Woodhouse
2018-02-20  8:35   ` Thomas Gleixner
2018-02-20 10:28   ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-02-19 10:50 ` [PATCH v3 4/4] x86/retpoline: Support retpoline build with Clang David Woodhouse
2018-02-20  8:36   ` Thomas Gleixner
2018-02-20  8:45     ` David Woodhouse [this message]
2018-02-20 10:29   ` [tip:x86/pti] x86/retpoline: Support retpoline builds " tip-bot for David Woodhouse

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