RE: [Xen-devel] EPS Signature

["Kaushik Barde" <Kaushik_Barde@xxxxxxxxxxx>]

But is the usage HYPERVISOR_update_descriptor(...) appropriate?  

-Kaushik

-----Original Message-----
From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx] 
Sent: Sunday, February 11, 2007 4:58 PM
To: Kaushik Barde; Ian Pratt; Xen devel list
Subject: Re: [Xen-devel] EPS Signature 

On 11/2/07 23:39, "Kaushik Barde" <Kaushik_Barde@xxxxxxxxxxx> wrote:

> gdt_table  = get_cpu_gdt_table(cpu);
> l_entry_ma = virt_to_bus(&(gdt_table[l_Request.entryNum]));
> l_desc_64  = *( (u64 *) &l_Desc);

This should be fine, assuming gdt_table is a normal kernel virtual
address
(e.g., returned by kmalloc()). I/O memory is a different matter in Xen,
in
that virt_to_bus() won't work. In fact the same restriction holds in
native
Linux as well (I/O memory shouldn't be virt_to_bus()ed).

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel