This patch introduces a memory allocator specifically tailored for
persistent memory within the kernel. The allocator maintains
kernel-specific states like DMA passthrough device states, IOMMU state, and
more across kexec.
The current implementation provides a foundation for custom solutions that
Hi Stanislav,
On 09/25/23 at 02:27pm, Stanislav Kinsburskii wrote:
> This patch introduces a memory allocator specifically tailored for
> persistent memory within the kernel. The allocator maintains
> kernel-specific states like DMA passthrough device states, IOMMU state, and
> more across kexec.
On Wed, Sep 27, 2023 at 01:44:38PM +0800, Baoquan He wrote:
> Hi Stanislav,
>
> On 09/25/23 at 02:27pm, Stanislav Kinsburskii wrote:
> > This patch introduces a memory allocator specifically tailored for
> > persistent memory within the kernel. The allocator maintains
> > kernel-specific states li
On 09/27/23 at 09:13am, Stanislav Kinsburskii wrote:
> On Wed, Sep 27, 2023 at 01:44:38PM +0800, Baoquan He wrote:
> > Hi Stanislav,
> >
> > On 09/25/23 at 02:27pm, Stanislav Kinsburskii wrote:
> > > This patch introduces a memory allocator specifically tailored for
> > > persistent memory within
On 9/27/23 09:13, Stanislav Kinsburskii wrote:
> Once deposited, these pages can't be accessed by Linux anymore and thus
> must be preserved in "used" state across kexec, as hypervisor state is
> unware of kexec.
If Linux can't access them, they're not RAM any more. I'd much rather
remove them fr
On Thu, Sep 28, 2023 at 06:25:44PM +0800, Baoquan He wrote:
> On 09/27/23 at 09:13am, Stanislav Kinsburskii wrote:
> > On Wed, Sep 27, 2023 at 01:44:38PM +0800, Baoquan He wrote:
> > > Hi Stanislav,
> > >
> > > On 09/25/23 at 02:27pm, Stanislav Kinsburskii wrote:
> > > > This patch introduces a me
On Thu, Sep 28, 2023 at 06:22:54AM -0700, Dave Hansen wrote:
> On 9/27/23 09:13, Stanislav Kinsburskii wrote:
> > Once deposited, these pages can't be accessed by Linux anymore and thus
> > must be preserved in "used" state across kexec, as hypervisor state is
> > unware of kexec.
>
> If Linux can
On 28.09.23 12:25, Baoquan He wrote:
On 09/27/23 at 09:13am, Stanislav Kinsburskii wrote:
On Wed, Sep 27, 2023 at 01:44:38PM +0800, Baoquan He wrote:
Hi Stanislav,
On 09/25/23 at 02:27pm, Stanislav Kinsburskii wrote:
This patch introduces a memory allocator specifically tailored for
persisten
On 9/27/23 16:25, Stanislav Kinsburskii wrote:
> On Thu, Sep 28, 2023 at 06:22:54AM -0700, Dave Hansen wrote:
>> On 9/27/23 09:13, Stanislav Kinsburskii wrote:
>>> Once deposited, these pages can't be accessed by Linux anymore and thus
>>> must be preserved in "used" state across kexec, as hypervis
On 28.09.23 15:22, Dave Hansen wrote:
On 9/27/23 09:13, Stanislav Kinsburskii wrote:
Once deposited, these pages can't be accessed by Linux anymore and thus
must be preserved in "used" state across kexec, as hypervisor state is
unware of kexec.
If Linux can't access them, they're not RAM any m
On 9/28/23 10:35, David Hildenbrand wrote:
> On 28.09.23 15:22, Dave Hansen wrote:
>> On 9/27/23 09:13, Stanislav Kinsburskii wrote:
>>> Once deposited, these pages can't be accessed by Linux anymore and thus
>>> must be preserved in "used" state across kexec, as hypervisor state is
>>> unware of k
On Thu, Sep 28, 2023 at 10:29:32AM -0700, Dave Hansen wrote:
> On 9/27/23 16:25, Stanislav Kinsburskii wrote:
> > On Thu, Sep 28, 2023 at 06:22:54AM -0700, Dave Hansen wrote:
> >> On 9/27/23 09:13, Stanislav Kinsburskii wrote:
> >>> Once deposited, these pages can't be accessed by Linux anymore and
On 9/27/23 17:02, Stanislav Kinsburskii wrote:
> On Thu, Sep 28, 2023 at 10:29:32AM -0700, Dave Hansen wrote:
...
> Well, not exactly. That's something I'd like to have indeed, but from my
> POV this goal is out of scope of discussion at the moment.
> Let me try to express it the same way you did a
On Thu, Sep 28, 2023 at 11:00:12AM -0700, Dave Hansen wrote:
> On 9/27/23 17:02, Stanislav Kinsburskii wrote:
> > On Thu, Sep 28, 2023 at 10:29:32AM -0700, Dave Hansen wrote:
> ...
> > Well, not exactly. That's something I'd like to have indeed, but from my
> > POV this goal is out of scope of disc
On 9/27/23 17:38, Stanislav Kinsburskii wrote:
> On Thu, Sep 28, 2023 at 11:00:12AM -0700, Dave Hansen wrote:
>> On 9/27/23 17:02, Stanislav Kinsburskii wrote:
>>> On Thu, Sep 28, 2023 at 10:29:32AM -0700, Dave Hansen wrote:
>> ...
>>> Well, not exactly. That's something I'd like to have indeed, bu
On Thu, Sep 28, 2023 at 12:16:31PM -0700, Dave Hansen wrote:
> On 9/27/23 17:38, Stanislav Kinsburskii wrote:
> > On Thu, Sep 28, 2023 at 11:00:12AM -0700, Dave Hansen wrote:
> >> On 9/27/23 17:02, Stanislav Kinsburskii wrote:
> >>> On Thu, Sep 28, 2023 at 10:29:32AM -0700, Dave Hansen wrote:
> >>
On 09/27/23 at 07:46pm, Stanislav Kinsburskii wrote:
> On Thu, Sep 28, 2023 at 12:16:31PM -0700, Dave Hansen wrote:
> > On 9/27/23 17:38, Stanislav Kinsburskii wrote:
> > > On Thu, Sep 28, 2023 at 11:00:12AM -0700, Dave Hansen wrote:
> > >> On 9/27/23 17:02, Stanislav Kinsburskii wrote:
> > >>> On
On Fri, Sep 29, 2023 at 07:56:37AM +0800, Baoquan He wrote:
> On 09/27/23 at 07:46pm, Stanislav Kinsburskii wrote:
> > On Thu, Sep 28, 2023 at 12:16:31PM -0700, Dave Hansen wrote:
> > > On 9/27/23 17:38, Stanislav Kinsburskii wrote:
> > > > On Thu, Sep 28, 2023 at 11:00:12AM -0700, Dave Hansen wrot
On Wed, Sep 27, 2023 at 07:46:36PM -0700, Stanislav Kinsburskii wrote:
> I'd answer yes, "System MAP" must be persisted across kexec.
> Could you elaborate on why there should be a mechanism to tell the
> kernel anything special about the existent "System map" in this context?
> Say, one can reserv
On Fri, Sep 29, 2023 at 01:13:24PM +0300, Shutemov, Kirill wrote:
> On Wed, Sep 27, 2023 at 07:46:36PM -0700, Stanislav Kinsburskii wrote:
> > I'd answer yes, "System MAP" must be persisted across kexec.
> > Could you elaborate on why there should be a mechanism to tell the
> > kernel anything spec
ndation.org; g...@amazon.de;
> pbonz...@redhat.com
> Subject: [EXTERNAL] Re: [RFC PATCH v2 0/7] Introduce persistent memory pool
>
> On 9/28/23 10:35, David Hildenbrand wrote:
> > On 28.09.23 15:22, Dave Hansen wrote:
> >> On 9/27/23 09:13, Stanislav Kinsburskii wrot
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