linux-kernel - Re: [PATCH] adjust/fix LDT handling for Xen

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Message-Id: <478B96A5.76E4.0078.0@novell.com>
Date:	Mon, 14 Jan 2008 16:06:45 +0000
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	<linux-kernel@...r.kernel.org>,
	"Jeremy Fitzhardinge" <jeremy@...source.com>
Subject: Re: [PATCH] adjust/fix LDT handling for Xen

>>> Ingo Molnar <mingo@...e.hu> 14.01.08 16:48 >>>
>
>* Jan Beulich <jbeulich@...ell.com> wrote:
>
>> Don't rely on kmalloc(PAGE_SIZE) returning PAGE_SIZE aligned memory 
>> (Xen requires GDT *and* LDT to be page-aligned). Using the page 
>> allocator interface also removes the (albeit small) slab allocator 
>> overhead. The same change being done for 64-bits for consistency.
>> 
>> Further, the Xen hypercall interface expects the LDT address to be 
>> virtual, not machine.
>
>coul dyou try this against x86.git as well? We already unified ldt.c as 
>part of the paravirt patches.

Sure, but it may take me a little while.

Jan

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