Re: [Xen-devel] [PATCH] HVM guests are allowed to use the entire virtual address space for

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 16:04 +0100 on 25 May (1274803495), Keir Fraser wrote:
> 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.

OK, can I suggest the attached change instead?  It brings the 
compat guest-handle macros in line with the normal ones.

Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>

There are a few more callers of access_ok() around but at first glance
they seem all to be PV-only. 

Cheers,

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, XenServer Engineering
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

Attachment: compat-handle
Description: Text document

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