From: Andi Kleen <ak@suse.de>
To: Magnus Damm <magnus@valinux.co.jp>
Cc: ebiederm@xmission.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] kexec: Avoid overwriting the current pgd (x86_64)
Date: 02 May 2006 08:45:59 +0200 [thread overview]
Message-ID: <p73ejzc7wm0.fsf@bragg.suse.de> (raw)
In-Reply-To: <20060501095407.16902.78809.sendpatchset@cherry.local>
Magnus Damm <magnus@valinux.co.jp> writes:
> --===============82697867595349228==
>
> kexec: Avoid overwriting the current pgd (x86_64)
>
> This patch upgrades the x86_64-specific kexec code to avoid overwriting the
> current pgd. Overwriting the current pgd is bad when CONFIG_CRASH_DUMP is used
> to start a secondary kernel that dumps the memory of the previous kernel.
Why is it bad?
-Andi
next prev parent reply other threads:[~2006-05-02 6:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-01 9:52 [PATCH] kexec: Avoid overwriting the current pgd (x86_64) Magnus Damm
2006-05-02 6:45 ` Andi Kleen [this message]
2006-05-02 7:21 ` Magnus Damm
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