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From: Alexander Popov <alpopov@ptsecurity.com>
To: Borislav Petkov <bp@alien8.de>, Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
	Andrey Konovalov <adech.fo@gmail.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	Andy Lutomirski <luto@kernel.org>,
	Alexander Kuleshov <kuleshovmail@gmail.com>,
	Denys Vlasenko <dvlasenk@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Kees Cook <keescook@chromium.org>, <x86@kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 1/2] x86_64: remove not needed clear_page for init_level4_page
Date: Wed, 17 Jun 2015 14:43:13 +0300	[thread overview]
Message-ID: <55815D51.4050309@ptsecurity.com> (raw)
In-Reply-To: <20150616154611.GJ17786@pd.tnic>

On 16.06.2015 18:46, Borislav Petkov wrote:
> On Tue, Jun 16, 2015 at 02:45:06PM +0300, Andrey Ryabinin wrote:
>> Can't we just move clear_page(init_level4_pgt) higher? Before or right
>> after clear_bss() (iow before kasan_early_init()).
> 
> That sounds much better. And I don't see anything depending on
> init_level4_pgt before we clear it. And it boots here if I move it
> before
> 
> 	kasan_map_early_shadow(early_level4_pgt);

Thanks, Borislav and Andrey.
I'll return with version 6.

Best regards,
Alexander


  reply	other threads:[~2015-06-17 11:42 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-09  9:41 [PATCH v5 0/2] x86_64: fix KASan shadow region page tables Alexander Popov
2015-06-09  9:42 ` [PATCH v5 1/2] x86_64: remove not needed clear_page for init_level4_page Alexander Popov
2015-06-16 11:16   ` Borislav Petkov
2015-06-16 11:34     ` Borislav Petkov
2015-06-16 11:45       ` Andrey Ryabinin
2015-06-16 15:46         ` Borislav Petkov
2015-06-17 11:43           ` Alexander Popov [this message]
2015-06-09  9:42 ` [PATCH v5 2/2] x86_64: fix KASan shadow region page tables Alexander Popov
2015-06-12 17:13   ` Andrey Ryabinin

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