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Re: [Xen-devel] [PATCH v3 01/11] x86/boot: enumerate documentation for the x86 hardware_subarch
- To: Andy Lutomirski <luto@xxxxxxxxxxxxxx>, Kees Cook <keescook@xxxxxxxxxxxx>
- From: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>
- Date: Wed, 24 Feb 2016 17:18:56 -0800
- Cc: Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, X86 ML <x86@xxxxxxxxxx>, lguest@xxxxxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, linux-security-module <linux-security-module@xxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, David Vrabel <david.vrabel@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Thu, 25 Feb 2016 01:19:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Feb 24, 2016 8:40 AM, "Andy Lutomirski" <luto@xxxxxxxxxxxxxx> wrote:
>
> On Feb 24, 2016 12:33 AM, "Ingo Molnar" <mingo@xxxxxxxxxx> wrote:
> >
> > For hard coded platform quirks I'd suggest we add x86_platform.quirks flags. For
> > example the F00F hack for Xen could be done via:
> >
> >Â Â Â Â Âx86_platform.quirks.idt_remap = 0;
> >
>
> Don't we unconditionally remap the IDT? I think Kees did it for
> general purpose hardening due to our complete inability to hide the
> IDT address. I.e. I think we can remove the f00f condition entirely.
>
Kees can you confirm ?
 Luis
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