From: Ingo Molnar <mingo@elte.hu>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>
Subject: Re: [PATCH] xen: fix allocation and use of large ldts
Date: Mon, 28 Jul 2008 14:26:48 +0200 [thread overview]
Message-ID: <20080728122648.GC5515@elte.hu> (raw)
In-Reply-To: <488C97FE.2010606@goop.org>
* Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> When the ldt gets to more than 1 page in size, the kernel uses vmalloc
> to allocate it. This means that:
> - when making the ldt RO, we must update the pages in both the vmalloc
> mapping and the linear mapping to make sure there are no RW aliases.
> - we need to use arbitrary_virt_to_machine to compute the machine addr
> for each update
applied to tip/x86/xen, thanks Jeremy.
Ingo
next prev parent reply other threads:[~2008-07-28 12:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-27 15:45 [PATCH] xen: fix allocation and use of large ldts Jeremy Fitzhardinge
2008-07-28 12:26 ` Ingo Molnar [this message]
2008-07-28 20:33 ` Jeremy Fitzhardinge
2008-07-31 15:10 ` Ingo Molnar
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