drew Cooper
>> ; George Dunlap ; Ian
>> Jackson
>> ; Roger Pau Monne ;
>> 'VolodymyrBabchuk'
>> ; 'Stefano Stabellini' ;
>> 'xen-
>> de...@lists.xenproject.org' ; 'Konrad
>> Rzeszutek Wilk'
>> ; 'Tamas K Lengyel' ; Tim
>> (Xen.org) ; 'Wei
&g
> 'VolodymyrBabchuk'
> ; 'Stefano Stabellini' ;
> 'xen-
> de...@lists.xenproject.org' ; 'Konrad
> Rzeszutek Wilk'
> ; 'Tamas K Lengyel' ; Tim
> (Xen.org) ; 'Wei
> Liu'
> Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) construction of
> IOMMU page tables
On 29.08.2019 11:33, Paul Durrant wrote:
> TBH I've seen sufficient numbers of domain create failures when using
> auto-ballooning that I stopped using it some time ago (besides the fact
> that it's slow). If you're happy with the simplistic
> double-the-page-table-reservation calculation then I
> 'VolodymyrBabchuk'
> ; 'Stefano Stabellini' ;
> 'xen-
> de...@lists.xenproject.org' ; 'Konrad
> Rzeszutek Wilk'
> ; 'Tamas K Lengyel' ; Tim
> (Xen.org) ; 'Wei
> Liu'
> Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) construction of
> IOMMU page tables
&
odymyrBabchuk
> ; Stefano Stabellini ;
> xen-
> de...@lists.xenproject.org; Konrad Rzeszutek Wilk ;
> Tamas K Lengyel
> ; Tim (Xen.org) ; Wei Liu
> Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) construction of
> IOMMU page tables
>
> On 12.08.2019 17:41, P
)
;
George Dunlap ; 'Julien Grall'
; 'Tamas K Lengyel'
; Ian Jackson ; 'Alexandru Isaila'
; 'xen-devel@lists.xenproject.org'
;
'VolodymyrBabchuk' ; Roger Pau Monne
Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) construction of
IOMMU page tables
-Original Message-
[snip
On 12.08.2019 18:26, Paul Durrant wrote:
-Original Message-
[snip]
On 30.07.2019 15:44, Paul Durrant wrote:
NOTE: This patch will cause a small amount of extra resource to be used
to accommodate IOMMU page tables that may never be used, since the
per-domain IOMMU flag
On 12.08.2019 17:41, Paul Durrant wrote:
From: Jan Beulich
Sent: 07 August 2019 11:32
On 30.07.2019 15:44, Paul Durrant wrote:
@@ -625,8 +548,7 @@ static void iommu_dump_p2m_table(unsigned char key)
ops = iommu_get_ops();
for_each_domain(d)
{
-if (
> (Xen.org) ;
> George Dunlap ; 'Julien Grall'
> ; 'Tamas K Lengyel'
> ; Ian Jackson ; 'Alexandru
> Isaila'
> ; 'xen-devel@lists.xenproject.org'
> ;
> 'VolodymyrBabchuk' ; Roger Pau Monne
>
> Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) const
> -Original Message-
[snip]
> >
> > On 30.07.2019 15:44, Paul Durrant wrote:
> > > NOTE: This patch will cause a small amount of extra resource to be used
> > >to accommodate IOMMU page tables that may never be used, since the
> > >per-domain IOMMU flag enable flag is
lodymyrBabchuk ; George
> Dunlap
> ; Ian Jackson ; Stefano
> Stabellini
> ; Konrad Rzeszutek Wilk ;
> Tamas K Lengyel
> ; Tim (Xen.org) ; Wei Liu
> Subject: Re: [Xen-devel] [PATCH 3/6] remove late (on-demand) construction of
> IOMMU page tables
>
> On 30.07.2019 15:
On 30.07.2019 15:44, Paul Durrant wrote:
NOTE: This patch will cause a small amount of extra resource to be used
to accommodate IOMMU page tables that may never be used, since the
per-domain IOMMU flag enable flag is currently set to the value
of the global iommu_enable
On 30.07.2019 16:44, Paul Durrant wrote:
> Now that there is a per-domain IOMMU enable flag, which should be enabled if
> any device is going to be passed through, stop deferring page table
> construction until the assignment is done. Also don't tear down the tables
> again when the last device
Now that there is a per-domain IOMMU enable flag, which should be enabled if
any device is going to be passed through, stop deferring page table
construction until the assignment is done. Also don't tear down the tables
again when the last device is de-assigned; defer that task until domain
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