linux-kernel - Re: [tip:x86/urgent] x86/mm/KASLR: Compute the size of the vmemmap section properly

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Message-ID: <20190608074959.GA31866@zn.tnic>
Date:   Sat, 8 Jun 2019 09:49:59 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Baoquan He <bhe@...hat.com>
Cc:     tglx@...utronix.de, stable@...r.kernel.org, mingo@...nel.org,
        x86@...nel.org, linux-kernel@...r.kernel.org, peterz@...radead.org,
        keescook@...omium.org, luto@...nel.org, hpa@...or.com,
        kirill@...ux.intel.com, dave.hansen@...ux.intel.com,
        linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/urgent] x86/mm/KASLR: Compute the size of the vmemmap
 section properly

On Sat, Jun 08, 2019 at 10:14:04AM +0800, Baoquan He wrote:
> Here, 4PB = 4*2^50 = 4*1024^5, the vmemmap should be 64 TB, am I right?

PB is 1000^5 petabytes.

1024^5 is PiB or pebibytes.

https://en.wikipedia.org/wiki/Petabyte

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Mary Higgins, Sri Rasiah, HRB 21284 (AG Nürnberg)
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