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

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:	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

--
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/