linux-kernel - Re: [PATCh] x86: overmapped fix when 4K pages on tail

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <86802c440807092357x293224bfh212665a164a41553@mail.gmail.com>
Date:	Wed, 9 Jul 2008 23:57:40 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Suresh Siddha" <suresh.b.siddha@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>
Subject: Re: [PATCh] x86: overmapped fix when 4K pages on tail - 64bit

On Wed, Jul 9, 2008 at 11:53 PM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
>> fix phys_pmd_init to make sure not to return big value than end.
>>
>> also print out range split:1G/2M/4K
>
> applied to tip/x86/core, thanks Yinghai. Lets hope it all goes well,
> this is a rather scary change - but it's also fairly clean.
>
> perhaps add a comment to the limit of 5 of mapping ranges - to point out
> that the number of mapping ranges depends on our programming, not on any
> external factor. I.e. if anyone adds a new mapping range to the kernel
> for any purpose, it must be extended - but otherwise it cannot run out
> due to new hardware.

4k, 2M, 1G, 2M, 4k

some day will get 512g page?

YH
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/