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From: "Woodhouse, David" <dwmw@amazon.co.uk>
To: Tom Lendacky <thomas.lendacky@amd.com>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"andi@firstfloor.org" <andi@firstfloor.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"peterz@infradead.org" <peterz@infradead.org>,
	"tim.c.chen@linux.intel.com" <tim.c.chen@linux.intel.com>,
	"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
	"ak@linux.intel.com" <ak@linux.intel.com>,
	"x86@kernel.org" <x86@kernel.org>,
	"luto@kernel.org" <luto@kernel.org>,
	"pjt@google.com" <pjt@google.com>,
	"dave.hansen@intel.com" <dave.hansen@intel.com>,
	"jikos@kernel.org" <jikos@kernel.org>,
	"gregkh@linux-foundation.org" <gregkh@linux-foundation.org>
Subject: Re: [PATCH v3 3/3] x86/retpoline: Convert generic specific retpolines to use RETPOLINE_GENERIC
Date: Wed, 10 Jan 2018 15:20:37 +0000	[thread overview]
Message-ID: <1515597637.22302.185.camel@amazon.co.uk> (raw)
In-Reply-To: <1e4e8acb-7f21-aa13-5c0c-5dccb2c4c8e4@amd.com>

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On Wed, 2018-01-10 at 09:18 -0600, Tom Lendacky wrote:
> 
> Ok, hence my caveat on the underflow in the reply.  If it's to eliminate
> userspace addresses, then yes, it needs to be applied for AMD as well.
> 
> In that case maybe the comments in arch/x86/entry/entry_{32,64}.S need to
> be updated since they only talk about underflow.

I think we're dropping that patch anyway. qv¹.

(¹ About to hit 'send' on that...)

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  reply	other threads:[~2018-01-10 15:21 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-10  2:28 Update retpoline boot fix Andi Kleen
2018-01-10  2:28 ` [PATCH v3 1/3] x86/retpoline: Add X86_FEATURE_RETPOLINE_GENERIC Andi Kleen
2018-01-10  2:28 ` [PATCH v3 2/3] x86/retpoline: Use better sequences for NOSPEC_CALL/JMP Andi Kleen
2018-01-10 13:26   ` Woodhouse, David
2018-01-10  2:28 ` [PATCH v3 3/3] x86/retpoline: Convert generic specific retpolines to use RETPOLINE_GENERIC Andi Kleen
2018-01-10 13:15   ` Woodhouse, David
2018-01-10 14:23     ` Tom Lendacky
2018-01-10 14:46       ` Woodhouse, David
2018-01-10 15:18         ` Tom Lendacky
2018-01-10 15:20           ` Woodhouse, David [this message]
2018-01-10 10:41 ` Update retpoline boot fix Thomas Gleixner

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