Date: Wed, 27 Apr 2016 17:30:10 +0200
From: Pavel Machek <pavel@ucw.cz>
To: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org,
        linux-doc@vger.kernel.org, x86@kernel.org,
        linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com,
        linux-mm@kvack.org, iommu@lists.linux-foundation.org,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Arnd Bergmann <arnd@arndb.de>, Jonathan Corbet <corbet@lwn.net>,
        Matt Fleming <matt@codeblueprint.co.uk>,
        Joerg Roedel <joro@8bytes.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
        Paolo Bonzini <pbonzini@redhat.com>, Ingo Molnar <mingo@redhat.com>,
        Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
        Alexander Potapenko <glider@google.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [RFC PATCH v1 02/18] x86: Secure Memory Encryption (SME) build
 enablement
Message-ID: <20160427153010.GA7861@amd>
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 <20160322130150.GB16528@xo-6d-61-c0.localdomain>
 <5720D810.9060602@amd.com>
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On Wed 2016-04-27 10:17:36, Tom Lendacky wrote:
> On 03/22/2016 08:01 AM, Pavel Machek wrote:
> > On Tue 2016-04-26 17:56:14, Tom Lendacky wrote:
> >> Provide the Kconfig support to build the SME support in the kernel.
> > 
> > 
> > Probably should go last in the series?
> 
> Yeah, I've seen arguments both ways for this. Doing it early
> allows compiling and testing with it enabled and doing it late
> doesn't enable anything until it's all there. I just chose the
> former.

Doing it early will break bisect, right?
							Pavel

> >> +config AMD_MEM_ENCRYPT
> >> +	bool "Secure Memory Encryption support for AMD"
> >> +	depends on X86_64 && CPU_SUP_AMD
> >> +	---help---
> >> +	  Say yes to enable the encryption of system memory. This requires
> >> +	  an AMD processor that supports Secure Memory Encryption (SME).
> >> +	  The encryption of system memory is disabled by default but can be
> >> +	  enabled with the mem_encrypt=on command line option.
> >> +
> >>  # Common NUMA Features
> >>  config NUMA
> >>  	bool "Numa Memory Allocation and Scheduler Support"
> > 

-- 
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