linux-kernel - Re: [PATCH 04/10] x86, mm: Don't clear page table if next range is ram

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]

Date:	Tue, 9 Oct 2012 18:08:39 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Konrad Rzeszutek Wilk <konrad@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com>,
	Tejun Heo <tj@...nel.org>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/10] x86, mm: Don't clear page table if next range is ram

On Tue, Oct 9, 2012 at 9:04 AM, Konrad Rzeszutek Wilk <konrad@...nel.org> wrote:
> How do we clean it wrongly?
>> And it only happens when we are trying to map range one by one range separately.
>>
>> After we add checking before clearing the related page table, that panic will
>> not happen anymore.
>
> So we do not clean the pages anymore. Is the cleaning of the pages
> addressed somewhere?

that is related calling sequence.

old design assume: we should call that several times under 1G.
--
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/