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Re: [Xen-devel] [PATCH] HVM guests are allowed to use the entire virtual
| To: | Tim Deegan <Tim.Deegan@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] HVM guests are allowed to use the entire virtual address space for |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 25 May 2010 16:04:55 +0100 |
| Cc: | |
| Delivery-date: | Tue, 25 May 2010 08:08:54 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] HVM guests are allowed to use the entire virtual address space for |
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I think this is already handled correctly by guest_access.h, which is what
really matters. Nowadays copy_{to,from}_user (but not __copy_{to,from}_user)
are mainly for private usage only by the guest-access macros, and just a few
other arch-dependent PV_specific bits of code. Of course the __ versions are
still generally useful as 'copy but catch any fault' functions.
-- Keir
On 25/05/2010 15:49, "Tim Deegan" <Tim.Deegan@xxxxxxxxxx> wrote:
> whatever they want, without any Xen hole. __addr_ok() is therefore
> always true for such guests.
>
> Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
>
>
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