On 04/24/2017 06:09 PM, David Miller wrote:
> From: John Paul Adrian Glaubitz
> Date: Mon, 24 Apr 2017 22:37:40 +0200
>
>> Would be really nice to able to have a canonical solution for this issue,
>> it's been biting us on SPARC for quite a while now due to the fact that
>> virtual address space
From: John Paul Adrian Glaubitz
Date: Mon, 24 Apr 2017 22:37:40 +0200
> Would be really nice to able to have a canonical solution for this issue,
> it's been biting us on SPARC for quite a while now due to the fact that
> virtual address space has been 52 bits on SPARC for a while now.
It's goin
On Mon, Apr 24, 2017 at 10:37:40PM +0200, John Paul Adrian Glaubitz wrote:
> On 04/24/2017 06:19 PM, Kirill A. Shutemov wrote:
> > In proposed implementation, we also use hint address, but in different
> > way: by default, if hint address is NULL, kernel would not create mappings
> > above 47-bits,
On 04/24/2017 06:19 PM, Kirill A. Shutemov wrote:
> In proposed implementation, we also use hint address, but in different
> way: by default, if hint address is NULL, kernel would not create mappings
> above 47-bits, preserving compatibility.
Ooooh, that would solve a lot of problems actually if i
On 04/24/2017 03:03 PM, Andi Kleen wrote:
> In old Linux hint was a search hint, so if there isn't a hole
> at the hinted area it will search starting from there for a hole
> instead of giving up immediately.
Yep, that's what I meant. It used to work like that and it still
works like that on NetBS
On Sun, Apr 23, 2017 at 12:53:46PM +0200, John Paul Adrian Glaubitz wrote:
> Hi Kirill!
>
> I recently read the LWN article on your and your colleagues work to
> add five-level page table support for x86 to the Linux kernel [1]
> and I got your email address from the last patch of the series.
>
>
> Can you explain what the issue is? What used to work on Linux and
> doesn't any more? The man page is quite clear:
In old Linux hint was a search hint, so if there isn't a hole
at the hinted area it will search starting from there for a hole
instead of giving up immediately.
Now it just gives
On Sun, Apr 23, 2017 at 3:53 AM, John Paul Adrian Glaubitz
wrote:
> Hi Kirill!
>
> I recently read the LWN article on your and your colleagues work to
> add five-level page table support for x86 to the Linux kernel [1]
> and I got your email address from the last patch of the series.
>
> Since thi
Hi Kirill!
I recently read the LWN article on your and your colleagues work to
add five-level page table support for x86 to the Linux kernel [1]
and I got your email address from the last patch of the series.
Since this extends the address space beyond 48-bits, as you may know,
it will cause pote
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