| |
|
 |
|
 |
|
|
|
| |
|
|
xen-devel
Re: [Xen-devel] Question about alignment check in sh_x86_emulate_write
At 20:38 +0800 on 04 Dec (1196800681), Su, Disheng wrote:
> In in sh_x86_emulate_write:
> if ( vaddr & (bytes-1) )
> return X86EMUL_UNHANDLE;
> I met a problem the vaddr is not aligned on word or dword, but have to
> emulate it.
Have you got an OS that does unaligned writes to its pagetables?
Exciting! What is it doing?
> I am wordering about the reason for this check. Is it safe to get rid of
> it?
Not really. Among other things, self-aligned writes never cross page
boundaries.
Tim.
--
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Citrix Systems.
[Company #5334508: XenSource UK Ltd, reg'd c/o EC2Y 5EB, UK.]
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
|
|
| |
|
Home