Re: [Xen-ia64-devel] [PATCH] fix vtlb flush

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

On Wed, Aug 13, 2008 at 03:44:50PM +0900, Kouya Shimura wrote:
> Isaku Yamahata writes:
> > Are you planning to send another patches
> > which should be included in the 3.3 release?
> > (of course it would depend on test resuts...)
> 
> I'm slight uneasy about the following dom0's dmesg.
> "xencomm_privcmd_hvm_op: unknown HVMOP 8"
> 
> Shoud we implement HVMOP_set_mem_type?
> There seems to be no problem without it, though.

I suppose there is no urgent need for it now.
On x86, it's used only by guest bios to protect virtual rom area
from guest.
For the 3.3 release it would be reasonable to implement
xencomm routine in dom0, and -ENOSYS in xen vmm.
(or if qemu complains, returning 0 doing nothing as work around)

I can think of some ia64 specific regions which should be
protected from guest, but not very urgent.
The xen/ia64 already has similar fanctionality internally,
ASSIGN_readonly. So I guess it's not much work to implement it.

-- 
yamahata

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