* Bulk pagetable unmap
@ 2009-03-09 16:29 Mick Jordan
2009-03-09 17:12 ` Mark Williamson
2009-03-09 17:52 ` Keir Fraser
0 siblings, 2 replies; 3+ messages in thread
From: Mick Jordan @ 2009-03-09 16:29 UTC (permalink / raw)
To: xen-devel
Is it possible to use HYPERVISOR_mmu_update to unmap an area of the
virtual address range and achieve the TLB update at the same time. I.e.,
a bulk version of:
return HYPERVISOR_update_va_mapping(addr), val,
(unsigned long)UVMF_ALL | UVMF_INVLPG);
Mick.
P.S. What happened to the developer manual for 3.3? The xen.org site
only shows a user manual.
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Bulk pagetable unmap
2009-03-09 16:29 Bulk pagetable unmap Mick Jordan
@ 2009-03-09 17:12 ` Mark Williamson
2009-03-09 17:52 ` Keir Fraser
1 sibling, 0 replies; 3+ messages in thread
From: Mark Williamson @ 2009-03-09 17:12 UTC (permalink / raw)
To: xen-devel, Mick.Jordan
I've only ever known this done by batching multiple hypercalls using a
multicall - saves multiple Guest<->Xen transitions, which I assume is what you
are aiming for? Would that do for your purposes?
Cheers,
Mark
On Monday 09 March 2009 16:29:18 Mick Jordan wrote:
> Is it possible to use HYPERVISOR_mmu_update to unmap an area of the
> virtual address range and achieve the TLB update at the same time. I.e.,
> a bulk version of:
>
> return HYPERVISOR_update_va_mapping(addr), val,
> (unsigned long)UVMF_ALL | UVMF_INVLPG);
>
> Mick.
>
> P.S. What happened to the developer manual for 3.3? The xen.org site
> only shows a user manual.
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Bulk pagetable unmap
2009-03-09 16:29 Bulk pagetable unmap Mick Jordan
2009-03-09 17:12 ` Mark Williamson
@ 2009-03-09 17:52 ` Keir Fraser
1 sibling, 0 replies; 3+ messages in thread
From: Keir Fraser @ 2009-03-09 17:52 UTC (permalink / raw)
To: Mick.Jordan@sun.com, xen-devel@lists.xensource.com
On 09/03/2009 16:29, "Mick Jordan" <Mick.Jordan@sun.com> wrote:
> Is it possible to use HYPERVISOR_mmu_update to unmap an area of the
> virtual address range and achieve the TLB update at the same time. I.e.,
> a bulk version of:
>
> return HYPERVISOR_update_va_mapping(addr), val,
> (unsigned long)UVMF_ALL | UVMF_INVLPG);
You'll have to do a multicall of HYPERVISOR_mmu_update followed by
HYPERVISOR_mmuext_op.
> Mick.
>
> P.S. What happened to the developer manual for 3.3? The xen.org site
> only shows a user manual.
There's no actively maintained developer manual.
-- Keir
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-03-09 16:29 Bulk pagetable unmap Mick Jordan
2009-03-09 17:12 ` Mark Williamson
2009-03-09 17:52 ` Keir Fraser
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