Am 27.04.2015 um 16:03 schrieb Alexander Graf:
> On 04/27/2015 03:57 PM, Martin Schwidefsky wrote:
>> On Mon, 27 Apr 2015 15:48:42 +0200
>> Alexander Graf wrote:
>>
>>> On 04/23/2015 02:13 PM, Martin Schwidefsky wrote:
On Thu, 23 Apr 2015 14:01:23 +0200
Alexander Graf wrote:
>
On 04/27/2015 03:57 PM, Martin Schwidefsky wrote:
On Mon, 27 Apr 2015 15:48:42 +0200
Alexander Graf wrote:
On 04/23/2015 02:13 PM, Martin Schwidefsky wrote:
On Thu, 23 Apr 2015 14:01:23 +0200
Alexander Graf wrote:
As far as alternative approaches go, I don't have a great idea otoh.
We coul
On Mon, 27 Apr 2015 15:48:42 +0200
Alexander Graf wrote:
> On 04/23/2015 02:13 PM, Martin Schwidefsky wrote:
> > On Thu, 23 Apr 2015 14:01:23 +0200
> > Alexander Graf wrote:
> >
> >> As far as alternative approaches go, I don't have a great idea otoh.
> >> We could have an elf flag indicating th
On 27/04/2015 15:48, Alexander Graf wrote:
> Well, you could also make it a personality flag for example, no? Then
> every new process below a certain one always gets 4k page tables until
> they drop the personality, at which point each child would only get 2k
> page tables again.
But if you hav
On 04/23/2015 02:08 PM, Christian Borntraeger wrote:
Am 23.04.2015 um 14:01 schrieb Alexander Graf:
Am 23.04.2015 um 13:43 schrieb Christian Borntraeger :
Am 23.04.2015 um 13:37 schrieb Alexander Graf:
Am 23.04.2015 um 13:08 schrieb Christian Borntraeger :
From: Martin Schwidefsky
Repl
On 04/23/2015 02:13 PM, Martin Schwidefsky wrote:
On Thu, 23 Apr 2015 14:01:23 +0200
Alexander Graf wrote:
As far as alternative approaches go, I don't have a great idea otoh.
We could have an elf flag indicating that this process needs 4k page
tables to limit the impact to a single process. I
On 04/23/2015 08:07 AM, Paolo Bonzini wrote:
>
>
> On 23/04/2015 13:43, Christian Borntraeger wrote:
Couldn't you make this a hidden kconfig option that gets automatically
selected when kvm is enabled? Or is there a non-kvm case that needs it too?
>> For things like RHEV the defau
On Thu, 23 Apr 2015 14:01:23 +0200
Alexander Graf wrote:
> As far as alternative approaches go, I don't have a great idea otoh.
> We could have an elf flag indicating that this process needs 4k page
> tables to limit the impact to a single process. In fact, could we
> maybe still limit the scope
Am 23.04.2015 um 14:01 schrieb Alexander Graf:
>
>
>> Am 23.04.2015 um 13:43 schrieb Christian Borntraeger
>> :
>>
>>> Am 23.04.2015 um 13:37 schrieb Alexander Graf:
>>>
>>>
Am 23.04.2015 um 13:08 schrieb Christian Borntraeger
:
From: Martin Schwidefsky
Replacing
On 23/04/2015 13:43, Christian Borntraeger wrote:
>> >
>> > Couldn't you make this a hidden kconfig option that gets automatically
>> > selected when kvm is enabled? Or is there a non-kvm case that needs it too?
> For things like RHEV the default could certainly be "enabled", but for normal
> d
> Am 23.04.2015 um 13:43 schrieb Christian Borntraeger :
>
>> Am 23.04.2015 um 13:37 schrieb Alexander Graf:
>>
>>
>>> Am 23.04.2015 um 13:08 schrieb Christian Borntraeger
>>> :
>>>
>>> From: Martin Schwidefsky
>>>
>>> Replacing a 2K page table with a 4K page table while a VMA is active
>>
Am 23.04.2015 um 13:37 schrieb Alexander Graf:
>
>
>> Am 23.04.2015 um 13:08 schrieb Christian Borntraeger
>> :
>>
>> From: Martin Schwidefsky
>>
>> Replacing a 2K page table with a 4K page table while a VMA is active
>> for the affected memory region is fundamentally broken. Rip out the
>> pag
> Am 23.04.2015 um 13:08 schrieb Christian Borntraeger :
>
> From: Martin Schwidefsky
>
> Replacing a 2K page table with a 4K page table while a VMA is active
> for the affected memory region is fundamentally broken. Rip out the
> page table reallocation code and replace it with a simple syste
From: Martin Schwidefsky
Replacing a 2K page table with a 4K page table while a VMA is active
for the affected memory region is fundamentally broken. Rip out the
page table reallocation code and replace it with a simple system
control 'vm.allocate_pgste'. If the system control is set the page
tab
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