2011/4/19 Ariane van der Steldt :
> You now have feedback. People don't like your diff, told you why. You
> now have options:
> You didn't get negative feedback on the reserved entry. It works for
> your map, maybe it'll also work for the kernel_map? Most comments here
> are against the kentry map.
On Tue, Apr 19, 2011 at 11:26:16AM +0600, Anton Maksimenkov wrote:
> 2011/4/19 Ariane van der Steldt :
> > Your diff is reducable to:
> > ?static struct vm_map_entry kentries[REALLY_BIG_NUMBER];
> > And then managing that memory using vmmap.
>
> Yes, more or less... But your example eats VA memory
2011/4/19 Ariane van der Steldt :
> Your diff is reducable to:
> static struct vm_map_entry kentries[REALLY_BIG_NUMBER];
> And then managing that memory using vmmap.
Yes, more or less... But your example eats VA memory and physical
pages immediately and forever, while my diff tried to eat it on d
On Mon, Apr 18, 2011 at 10:24:32AM +0600, Anton Maksimenkov wrote:
> 2011/4/18 Ted Unangst :
> > +if (uvm.numof_free_kentries < 1) /*check to be safe*/
> > +panic("uvm.numof_free_kentries[%d] < 1\n",
> uvm.numof_free_kentries);
> >>> This diff would take us back to the bad old days whe
2011/4/18 Ted Unangst :
> +if (uvm.numof_free_kentries < 1) /*check to be safe*/
> +panic("uvm.numof_free_kentries[%d] < 1\n",
uvm.numof_free_kentries);
>>> This diff would take us back to the bad old days when running out of
entries led
>>> to a panic.
>> Totally conversely. As It was
On Sun, Apr 17, 2011 at 12:49 AM, Anton Maksimenkov
wrote:
+if (uvm.numof_free_kentries < 1) /*check to be safe*/
+panic("uvm.numof_free_kentries[%d] < 1\n", uvm.numof_free_kentries);
>> This diff would take us back to the bad old days when running out of
entries led
>> to a panic.
2011/4/17 Ted Unangst :
>> This kentry_map must be used only for kentries allocation. Since all
> This really isn't that much different than the static entries we have
> now. You are pre-reserving them.
No. Now, we have to trust to kmthread to preallocate pages. It is not
possible to predict when
On Sat, Apr 16, 2011 at 2:49 PM, Anton Maksimenkov wrote:
> So I decide to create another special map called "kentry_map".
> This kentry_map must be used only for kentries allocation. Since all
This really isn't that much different than the static entries we have
now. You are pre-reserving them.
