linux-kernel - Re: [PATCH v3 1/1] x86_64: fix KASan shadow region page tables

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Message-ID: <20150602084939.GA412@gmail.com>
Date:	Tue, 2 Jun 2015 10:49:39 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Alexander Popov <alpopov@...ecurity.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrey Ryabinin <a.ryabinin@...sung.com>,
	Andrey Konovalov <adech.fo@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kees Cook <keescook@...omium.org>,
	"Peter Zijlstra (Intel)" <peterz@...radead.org>,
	Andy Lutomirski <luto@...capital.net>,
	Alexander Kuleshov <kuleshovmail@...il.com>,
	Borislav Petkov <bp@...e.de>,
	Denys Vlasenko <dvlasenk@...hat.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/1] x86_64: fix KASan shadow region page tables


* Alexander Popov <alpopov@...ecurity.com> wrote:

> KASan shadow region page tables can't be filled statically because
> physical addresses in these page tables depend on phys_base.
> Initialize KASan shadow region page tables in kasan_early_init().

Yeah, so please use the customary changelog style we use in the kernel:

  " Current code does (A), this causes problem (B) when doing (C).

    In that case the user notices (D).

    We can improve this doing (E), because (F)."

Please fill in (A)-(E) accordingly.

Thanks,

        Ingo
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