On Thu, Jul 25, 2013 at 12:11:15PM +0200, Andrea Arcangeli wrote:
> MADV_DONTFORK prevents fork to fail with -ENOMEM if the default
> overcommit heuristics decides there's too much anonymous virtual
> memory allocated. If the KVM secondary MMU is synchronized with MMU
> notifiers or not, doesn't ma
Il 06/08/2013 18:55, Andreas Färber ha scritto:
> Am 25.07.2013 12:32, schrieb Andrea Arcangeli:
>> On Thu, Jul 25, 2013 at 11:16:44AM +0100, Peter Maydell wrote:
>>> On 25 July 2013 11:11, Andrea Arcangeli wrote:
diff --git a/exec.c b/exec.c
index c99a883..d3bb58d 100644
--- a/exec
Le Thursday 25 Jul 2013 à 12:11:15 (+0200), Andrea Arcangeli a écrit :
> MADV_DONTFORK prevents fork to fail with -ENOMEM if the default
> overcommit heuristics decides there's too much anonymous virtual
> memory allocated. If the KVM secondary MMU is synchronized with MMU
> notifiers or not, doesn
Am 25.07.2013 12:32, schrieb Andrea Arcangeli:
> On Thu, Jul 25, 2013 at 11:16:44AM +0100, Peter Maydell wrote:
>> On 25 July 2013 11:11, Andrea Arcangeli wrote:
>>> diff --git a/exec.c b/exec.c
>>> index c99a883..d3bb58d 100644
>>> --- a/exec.c
>>> +++ b/exec.c
>>> @@ -1162,6 +1162,7 @@ ram_addr_
On Thu, Jul 25, 2013 at 11:16:44AM +0100, Peter Maydell wrote:
> On 25 July 2013 11:11, Andrea Arcangeli wrote:
> > diff --git a/exec.c b/exec.c
> > index c99a883..d3bb58d 100644
> > --- a/exec.c
> > +++ b/exec.c
> > @@ -1162,6 +1162,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size,
> > vo
On 25 July 2013 11:11, Andrea Arcangeli wrote:
> diff --git a/exec.c b/exec.c
> index c99a883..d3bb58d 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -1162,6 +1162,7 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size,
> void *host,
>
> qemu_ram_setup_dump(new_block->host, size);
> qemu_ma
MADV_DONTFORK prevents fork to fail with -ENOMEM if the default
overcommit heuristics decides there's too much anonymous virtual
memory allocated. If the KVM secondary MMU is synchronized with MMU
notifiers or not, doesn't make a difference in that regard.
Secondly it's always more efficient to av
