linux-kernel - Re: [PATCH v5 4/4] x86/mm/KASLR: Adjust the padding size for the direct mapping.

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Message-ID: <20191214100700.GK28917@MiWiFi-R3L-srv>
Date:   Sat, 14 Dec 2019 18:07:00 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Borislav Petkov <bp@...en8.de>,
        Masayoshi Mizuma <msys.mizuma@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Masayoshi Mizuma <m.mizuma@...fujitsu.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 4/4] x86/mm/KASLR: Adjust the padding size for the
 direct mapping.

On 12/14/19 at 08:13am, Borislav Petkov wrote:
> On Sat, Dec 14, 2019 at 07:29:28AM +0800, Baoquan He wrote:
> > OK, you mean parsing SRAT again before kernel_randomize_memory(). I
> > think this is what Masa made this patchset to avoid. Then we will have
> > three times SRAT parsing.
> 
> Can the SRAT parsing be *moved* up so that it is done before
> kernel_randomize_memory() ?
> 
> So that it doesn't happen 3 times and acpi_numa_init() can simply use
> the already parsed results.

Not very sure, It could be doable. Maybe Masa can have a try.