Message-id: <5562D989.3030206@samsung.com>
Date: Mon, 25 May 2015 11:12:57 +0300
From: Andrey Ryabinin <a.ryabinin@samsung.com>
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To: Alexander Popov <alpopov@ptsecurity.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Andrey Konovalov <adech.fo@gmail.com>,
        Denys Vlasenko <dvlasenk@redhat.com>,
        Andy Lutomirski <luto@amacapital.net>,
        Alexander Kuleshov <kuleshovmail@gmail.com>,
        Sergey Kovalev <SKovalev@ptsecurity.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] x86_64: fix KASan shadow region page tables
References: <1432310581-11965-1-git-send-email-alpopov@ptsecurity.com>
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On 05/22/2015 07:03 PM, Alexander Popov wrote:
> Physical addresses in KASan shadow region page tables need fixup:
> kernel halts without it if phys_base is not zero.
> 

Indeed.
Since we have to patch page tables anyway, compile-time created kasan
page tables become pointless.
So, I'd suggest to create them in runtime. This could be done in plain C
in kasan_map_early_shadow().


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