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Date:   Wed, 6 Feb 2019 18:53:57 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Kees Cook <keescook@chromium.org>
Cc:     Julian Stecklina <jsteckli@amazon.de>,
        Julian Stecklina <js@alien8.de>, X86 ML <x86@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        LKML <linux-kernel@vger.kernel.org>, jschoenh@amazon.de,
        Dave Jiang <dave.jiang@intel.com>, Baoquan He <bhe@redhat.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 2/2] x86/boot: increase maximum number of avoided KASLR
 regions
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On Wed, Feb 06, 2019 at 03:29:06PM +0000, Kees Cook wrote:
> I'm fine adjusting all this to do things better. Ultimately, we're
> still walking two lists to process their intersection.

I'm wondering if we could start with a single range including all memory
and then keep exluding until we're done and then feed those remaining
ranges to slots_fetch_random(). So that mem_avoid[] is not needed
anymore.

Probably need to look for the devil in the detail first.

> Eh, it's just in the boot stub. ;)

They always say something like that. :-)

Thx.

-- 
Regards/Gruss,
    Boris.

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