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Date: Thu, 11 Sep 2014 09:25:46 +0400
From: Andrey Ryabinin <a.ryabinin@samsung.com>
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To: Andi Kleen <andi@firstfloor.org>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Sasha Levin <sasha.levin@oracle.com>, Dave Hansen <dave.hansen@intel.com>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Dmitry Vyukov <dvyukov@google.com>,
        Konstantin Serebryany <kcc@google.com>,
        Dmitry Chernenkov <dmitryc@google.com>,
        Andrey Konovalov <adech.fo@gmail.com>,
        Yuri Gribov <tetra2005@gmail.com>,
        Konstantin Khlebnikov <koct9i@gmail.com>,
        Christoph Lameter <cl@linux.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Vegard Nossum <vegard.nossum@gmail.com>,
        "x86@kernel.org" <x86@kernel.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>
Subject: Re: [RFC/PATCH v2 02/10] x86_64: add KASan support
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On 09/11/2014 08:46 AM, Andi Kleen wrote:
> On Wed, Sep 10, 2014 at 09:33:11PM -0700, H. Peter Anvin wrote:
>> On 09/10/2014 09:29 PM, Sasha Levin wrote:
>>> On 09/11/2014 12:26 AM, H. Peter Anvin wrote:
>>>> Except you just broke PVop kernels.
>>>
>>> So is this why v2 refuses to boot on my KVM guest? (was digging
>>> into that before I send a mail out).
>>>
>>
>> No, KVM should be fine.  It is Xen PV which ends up as a smoldering crater.
> 
> Just exclude it in Kconfig? I assume PV will eventually go away anyways.
> 
> -Andi
> 

That's done already in this patch:

--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -135,6 +135,7 @@ config X86
 	select HAVE_ACPI_APEI if ACPI
 	select HAVE_ACPI_APEI_NMI if ACPI
 	select ACPI_LEGACY_TABLES_LOOKUP if ACPI
+	select HAVE_ARCH_KASAN if X86_64 && !XEN