Am 03.09.18 um 02:36 schrieb Rashmica:
> Hi David,
>
>
> On 21/08/18 20:44, David Hildenbrand wrote:
>
>> There seem to be some problems as result of 30467e0b3be ("mm, hotplug:
>> fix concurrent memory hot-add deadlock"), which tried to fix a possible
>&g
car Salvador
Cc: YASUAKI ISHIMATSU
Cc: Mathieu Malaterre
Reviewed-by: Pavel Tatashin
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 2 --
arch/powerpc/platforms/pseries/hotplug-memory.c | 6 +++---
drivers/acpi/acpi_memhotplug.c
: Boris Ostrovsky
Cc: Juergen Gross
Cc: Nathan Fontenot
Cc: John Allen
Cc: Andrew Morton
Cc: Michal Hocko
Cc: Dan Williams
Cc: Joonsoo Kim
Cc: Vlastimil Babka
Cc: Oscar Salvador
Cc: Mathieu Malaterre
Cc: Pavel Tatashin
Cc: YASUAKI ISHIMATSU
Reviewed-by: Pavel Tatashin
Signed-off-by: David H
Added rb's
RFC -> RFCv2:
- Don't export device_hotplug_lock, provide proper remove_memory/add_memory
wrappers.
- Split up the patches a bit.
- Try to improve powernv memtrace locking
- Add some documentation for locking that matches my knowledge
David Hildenbrand (6):
mm/memory_
n
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
drivers/base/memory.c | 13 +
mm/memory_hotplug.c | 28
2 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 40cac122e
ff-by: David Hildenbrand
---
Documentation/memory-hotplug.txt | 39 +++-
1 file changed, 38 insertions(+), 1 deletion(-)
diff --git a/Documentation/memory-hotplug.txt b/Documentation/memory-hotplug.txt
index 7f49ebf3ddb2..03aaad7d7373 100644
--- a/Documentation/m
ashin
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c
b/arch/powerpc/platforms/powernv/memtrace.c
index ef7181d4fe68..473e59842ec5 100644
--- a
device_online() should be called with device_hotplug_lock() held.
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Rashmica Gupta
Cc: Balbir Singh
Cc: Michael Neuling
Reviewed-by: Pavel Tatashin
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv
Am 19.09.18 um 03:22 schrieb Balbir Singh:
> On Tue, Sep 18, 2018 at 01:48:16PM +0200, David Hildenbrand wrote:
>> Reading through the code and studying how mem_hotplug_lock is to be used,
>> I noticed that there are two places where we can end up calling
>> device_on
ed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 2 +-
arch/powerpc/platforms/pseries/hotplug-memory.c | 6 +++---
drivers/acpi/acpi_memhotplug.c | 2 +-
include/linux/memory_hotplug.h | 3 ++-
mm/m
e_memory/add_memory
wrappers.
- Split up the patches a bit.
- Try to improve powernv memtrace locking
- Add some documentation for locking that matches my knowledge
David Hildenbrand (6):
mm/memory_hotplug: make remove_memory() take the device_hotplug_lock
mm/memory_hotplug: make add_memory() ta
Rafael J. Wysocki
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
.../platforms/pseries/hotplug-memory.c| 2 +-
drivers/acpi/acpi_memhotplug.c| 2 +-
drivers/base/memory.c | 9 ++--
drivers/xen/balloon.c
ed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
Documentation/memory-hotplug.txt | 42 +++-
1 file changed, 41 insertions(+), 1 deletion(-)
diff --git a/Documentation/memory-hotplug.txt b/Documentation/memory-hotplug.txt
index 7f49ebf3ddb2..ce4faa5530fa 100644
ashin
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c
b/arch/powerpc/platforms/powernv/memtrace.c
index fdd48f1a39f7..d84d09c
n
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
drivers/base/memory.c | 13 +
mm/memory_hotplug.c | 28
2 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 40cac122e
device_online() should be called with device_hotplug_lock() held.
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Rashmica Gupta
Cc: Balbir Singh
Cc: Michael Neuling
Reviewed-by: Pavel Tatashin
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
arch
On 25/09/2018 14:15, Balbir Singh wrote:
> On Tue, Sep 25, 2018 at 11:14:56AM +0200, David Hildenbrand wrote:
>> Let's perform all checking + offlining + removing under
>> device_hotplug_lock, so nobody can mess with these devices via
>> sysfs concurrently.
>>
>
n
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
drivers/base/memory.c | 13 +
mm/memory_hotplug.c | 28
2 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 40cac122e
Rafael J. Wysocki
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
.../platforms/pseries/hotplug-memory.c| 2 +-
drivers/acpi/acpi_memhotplug.c| 2 +-
drivers/base/memory.c | 9 ++--
drivers/xen/balloon.c
ed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 2 +-
arch/powerpc/platforms/pseries/hotplug-memory.c | 6 +++---
drivers/acpi/acpi_memhotplug.c | 2 +-
include/linux/memory_hotplug.h | 3 ++-
mm/m
remove_memory() in patch #1
- Minor patch description fixes.
- Added rb's
RFC -> RFCv2:
- Don't export device_hotplug_lock, provide proper remove_memory/add_memory
wrappers.
- Split up the patches a bit.
- Try to improve powernv memtrace locking
- Add some documentation for locking that
ashin
Reviewed-by: Rashmica Gupta
Acked-by: Balbir Singh
Signed-off-by: David Hildenbrand
---
arch/powerpc/platforms/powernv/memtrace.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/memtrace.c
b/arch/powerpc/platforms/powernv/memtrace.c
device_online() should be called with device_hotplug_lock() held.
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Rashmica Gupta
Cc: Balbir Singh
Cc: Michael Neuling
Reviewed-by: Pavel Tatashin
Reviewed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
arch
ed-by: Rashmica Gupta
Signed-off-by: David Hildenbrand
---
Documentation/memory-hotplug.txt | 42 +++-
1 file changed, 41 insertions(+), 1 deletion(-)
diff --git a/Documentation/memory-hotplug.txt b/Documentation/memory-hotplug.txt
index 7f49ebf3ddb2..ce4faa5530fa 100644
Kroah-Hartman
Cc: "K. Y. Srinivasan"
Cc: Haiyang Zhang
Cc: Stephen Hemminger
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: "Jérôme Glisse"
Cc: Andrew Morton
Cc: Mike Rapoport
Cc: Dan Williams
Cc: Stephen Rothwell
Cc: Michal Hocko
Cc: "Kirill A. Shutemov"
Cc: David
On 28/09/2018 19:02, Dave Hansen wrote:
> It's really nice if these kinds of things are broken up. First, replace
> the old want_memblock parameter, then add the parameter to the
> __add_page() calls.
Definitely, once we agree that is is not nuts, I will split it up for
the next version :)
>
>>
On 01/10/2018 10:40, Michal Hocko wrote:
> On Fri 28-09-18 17:03:57, David Hildenbrand wrote:
> [...]
>
> I haven't read the patch itself but I just wanted to note one thing
> about this part
>
>> For paravirtualized devices it is relevant that memory is onlined as
On 02/10/2018 15:47, Michal Hocko wrote:
> On Mon 01-10-18 11:34:25, David Hildenbrand wrote:
>> On 01/10/2018 10:40, Michal Hocko wrote:
>>> On Fri 28-09-18 17:03:57, David Hildenbrand wrote:
>>> [...]
>>>
>>> I haven't read the patch itself but I
On 03/10/2018 15:54, Michal Hocko wrote:
> On Tue 02-10-18 17:25:19, David Hildenbrand wrote:
>> On 02/10/2018 15:47, Michal Hocko wrote:
> [...]
>>> Zone imbalance is an inherent problem of the highmem zone. It is
>>> essentially the highmem zone we all loved so much
On 03/10/2018 16:24, Michal Hocko wrote:
> On Wed 03-10-18 15:52:24, Vitaly Kuznetsov wrote:
> [...]
>>> As David said some of the memory cannot be onlined without further steps
>>> (e.g. when it is standby as David called it) and then I fail to see how
>>> eBPF help in any way.
>>
>> and also, we
On 03/10/2018 16:34, Vitaly Kuznetsov wrote:
> Dave Hansen writes:
>
>> On 10/03/2018 06:52 AM, Vitaly Kuznetsov wrote:
>>> It is more than just memmaps (e.g. forking udev process doing memory
>>> onlining also needs memory) but yes, the main idea is to make the
>>> onlining synchronous with hotp
On 04/10/2018 08:28, Michal Hocko wrote:
> On Wed 03-10-18 19:00:29, David Hildenbrand wrote:
> [...]
>> Let me rephrase: You state that user space has to make the decision and
>> that user should be able to set/reconfigure rules. That is perfectly fine.
>>
>> But
On 01/10/2018 18:24, Dave Hansen wrote:
>> How should a policy in user space look like when new memory gets added
>> - on s390x? Not onlining paravirtualized memory is very wrong.
>
> Because we're going to balloon it away in a moment anyway?
No, rether somebody wanted this VM to have more memory
On 03/10/2018 16:24, Michal Hocko wrote:
> On Wed 03-10-18 15:52:24, Vitaly Kuznetsov wrote:
> [...]
>>> As David said some of the memory cannot be onlined without further steps
>>> (e.g. when it is standby as David called it) and then I fail to see how
>>> eBPF help in any way.
>>
>> and also, we
On 04/10/2018 08:19, Michal Hocko wrote:
> On Wed 03-10-18 19:14:05, David Hildenbrand wrote:
>> On 03/10/2018 16:34, Vitaly Kuznetsov wrote:
>>> Dave Hansen writes:
>>>
>>>> On 10/03/2018 06:52 AM, Vitaly Kuznetsov wrote:
>>>>> It is more tha
On 04/10/2018 17:28, Michal Suchánek wrote:
> On Thu, 4 Oct 2018 10:13:48 +0200
> David Hildenbrand wrote:
>
> ok, so what is the problem here?
>
> Handling the hotplug in userspace through udev may be suboptimal and
> kernel handling might be faster but that's or
On 04/10/2018 19:50, Michal Suchánek wrote:
> On Thu, 4 Oct 2018 17:45:13 +0200
> David Hildenbrand wrote:
>
>> On 04/10/2018 17:28, Michal Suchánek wrote:
>
>>>
>>> The state of the art is to determine what to do with hotplugged
>>> memory in usersp
and a makedumpfile change will be required to skip
dumping these pages).
[1] https://lkml.org/lkml/2018/7/20/566
David Hildenbrand (6):
mm: balloon: update comment about isolation/migration/compaction
mm: convert PG_balloon to PG_offline
kexec: export PG_offline to VMCOREINFO
xen/balloon:
on
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
include/linux/balloon_compaction.h | 26 +-
1 file changed, 9 insertions(+), 17 deletions(-)
diff --git a/include/linux/balloon_compaction.h
b/include/linux/b
thew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
kernel/crash_core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 933cb3e45b98..093c9f917ed0 100644
--- a/kernel/crash_core.c
+++ b/kern
t;Kirill A. Shutemov"
Cc: Stephen Rothwell
Cc: Matthew Wilcox
Cc: "Michael S. Tsirkin"
Cc: Michal Hocko
Cc: Pavel Tatashin
Cc: Alexander Duyck
Cc: Naoya Horiguchi
Cc: Miles Chen
Cc: David Rientjes
Signed-off-by: David Hildenbrand
---
Documentation/admin-guide/mm/pagemap.rst |
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off
The content of pages that are marked PG_offline is not of interest
(e.g. inflated by a balloon driver), let's skip these pages.
Cc: "Rafael J. Wysocki"
Cc: Pavel Machek
Cc: Len Brown
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin&qu
"Michael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
drivers/hv/hv_balloon.c | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 5728dc470eeb..778b6f879d1c 100644
--- a/drivers/hv/hv_balloo
On 14.11.18 23:23, Matthew Wilcox wrote:
> On Wed, Nov 14, 2018 at 10:17:00PM +0100, David Hildenbrand wrote:
>> Rename PG_balloon to PG_offline. This is an indicator that the page is
>> logically offline, the content stale and that it should not be touched
>> (e.g. a hyp
On 14.11.18 23:57, Nadav Amit wrote:
> From: David Hildenbrand
> Sent: November 14, 2018 at 9:16:58 PM GMT
>> Subject: [PATCH RFC 0/6] mm/kdump: allow to exclude pages that are logically
>> offline
>>
>>
>> Right now, pages inflated as part of a balloon driver
On 15.11.18 03:07, Mike Rapoport wrote:
> On Wed, Nov 14, 2018 at 11:49:15PM +0100, David Hildenbrand wrote:
>> On 14.11.18 23:23, Matthew Wilcox wrote:
>>> On Wed, Nov 14, 2018 at 10:17:00PM +0100, David Hildenbrand wrote:
>>>> Rename PG_balloon to PG_offline. This
On 15.11.18 07:19, Dave Young wrote:
> Hi David,
>
> On 11/14/18 at 10:17pm, David Hildenbrand wrote:
>> Let's export PG_offline via PAGE_OFFLINE_MAPCOUNT_VALUE, so
>> makedumpfile can directly skip pages that are logically offline and the
>> content therefore stal
On 15.11.18 12:10, Borislav Petkov wrote:
> On Thu, Nov 15, 2018 at 02:19:23PM +0800, Dave Young wrote:
>> It would be good to copy some background info from cover letter to the
>> patch description so that we can get better understanding why this is
>> needed now.
>>
>> BTW, Lianbo is working on a
On 15.11.18 12:52, Borislav Petkov wrote:
> On Thu, Nov 15, 2018 at 12:20:40PM +0100, David Hildenbrand wrote:
>> Sorry to say, but that is the current practice without which
>> makedumpfile would not be able to work at all. (exclude user pages,
>> exclude page cache, exclud
On 15.11.18 13:23, Michal Hocko wrote:
> On Wed 14-11-18 22:17:04, David Hildenbrand wrote:
> [...]
>> diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
>> index b0308a2c6000..01db1d13481a 100644
>> --- a/kernel/power/snapshot.c
>> +++ b/kernel/power/sn
On 14.11.18 22:16, David Hildenbrand wrote:
> Right now, pages inflated as part of a balloon driver will be dumped
> by dump tools like makedumpfile. While XEN is able to check in the
> crash kernel whether a certain pfn is actuall backed by memory in the
> hypervisor (see xen_oldme
ated pages PG_offline"
- "mm: convert PG_balloon to PG_offline"
-- After discussions, also rename the UAPI bit name (KPF_BALLOON -> KPF_OFFLINE)
David Hildenbrand (8):
mm: balloon: update comment about isolation/migration/compaction
mm: convert PG_balloon to PG_offline
kexec:
mping them.
Cc: Andrew Morton
Cc: Dave Young
Cc: "Kirill A. Shutemov"
Cc: Baoquan He
Cc: Omar Sandoval
Cc: Arnd Bergmann
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Cc: Lianbo Jiang
Cc: Borislav Petkov
Cc: Kazuhito Hagio
Signed-off-by: David
on
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
include/linux/balloon_compaction.h | 26 +-
1 file changed, 9 insertions(+), 17 deletions(-)
diff --git a/include/linux/balloon_compaction.h
b/include/linux/b
Miles Chen
Cc: David Rientjes
Cc: Konstantin Khlebnikov
Cc: Kazuhito Hagio
Signed-off-by: David Hildenbrand
---
Documentation/admin-guide/mm/pagemap.rst | 9 ++---
fs/proc/page.c | 4 ++--
include/linux/balloon_compaction.h | 8
include/linux/p
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off
"Michael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
drivers/hv/hv_balloon.c | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 211f3fe3a038..47719862e57f 100644
--- a/drivers/hv/hv_balloo
;
Acked-by: Pavel Machek
Signed-off-by: David Hildenbrand
---
kernel/power/snapshot.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 87e6dd57819f..8d7b4d458842 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snap
ot;
Suggested-by: Michal Hocko
Signed-off-by: David Hildenbrand
---
kernel/power/snapshot.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 640b2034edd6..87e6dd57819f 100644
--- a/kernel/power/snapshot.c
+++
ael S. Tsirkin"
Signed-off-by: David Hildenbrand
---
drivers/misc/vmw_balloon.c | 32
1 file changed, 32 insertions(+)
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index e6126a4b95d3..8cc8bd9a4e32 100644
--- a/drivers/misc/vmw_ballo
balloon driver).
Therefore, don't read and dump pages that are marked as being logically
offline.
Signed-off-by: David Hildenbrand
---
makedumpfile.c | 34 ++
makedumpfile.h | 1 +
2 files changed, 31 insertions(+), 4 deletions(-)
diff --git a/makedumpfil
On 19.11.18 13:22, Juergen Gross wrote:
> On 19/11/2018 11:16, David Hildenbrand wrote:
>> Mark inflated and never onlined pages PG_offline, to tell the world that
>> the content is stale and should not be dumped.
>>
>> Cc: Boris Ostrovsky
>> Cc: Juergen Gross
>
> diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
> index 50ce1bddaf56..f91da3d0a67e 100644
> --- a/include/linux/page-flags.h
> +++ b/include/linux/page-flags.h
> @@ -670,7 +670,7 @@ PAGEFLAG_FALSE(DoubleMap)
> #define PAGE_TYPE_BASE 0xf000
> /* Reserve
> Cc: Stephen Hemminger
>> Cc: Kairui Song
>> Cc: Vitaly Kuznetsov
>> Cc: Andrew Morton
>> Cc: Matthew Wilcox
>> Cc: Michal Hocko
>> Cc: "Michael S. Tsirkin"
>> Signed-off-by: David Hildenbrand
>> ---
>> drivers/hv/hv_ba
On 21.11.18 07:04, Baoquan He wrote:
> On 11/19/18 at 11:16am, David Hildenbrand wrote:
>> diff --git a/kernel/crash_core.c b/kernel/crash_core.c
>> index 933cb3e45b98..093c9f917ed0 100644
>> --- a/kernel/crash_core.c
>> +++ b/kernel/crash_core.c
>> @@ -
On 21.11.18 04:22, Nadav Amit wrote:
> Thanks for this patch!
>
>> On Nov 19, 2018, at 2:16 AM, David Hildenbrand wrote:
>>
>> Mark inflated and never onlined pages PG_offline, to tell the world that
>> the content is stale and should not be dumped.
>>
>>
On 21.11.18 12:35, William Kucharski wrote:
> If you are adding PageOffline(page) to the condition list of the already
> existing if in
> saveable_highmem_page(), why explicitly add it as a separate statement in
> saveable_page()?
>
> It would seem more consistent to make the second check:
>
>
by we can crash the kernel by
>> dumping, when reading memory of a partially onlined memory segment
>> (for memory added by the Hyper-V balloon driver).
>>
>> Therefore, don't read and dump pages that are marked as being logically
Miles Chen
Cc: David Rientjes
Cc: Konstantin Khlebnikov
Cc: Kazuhito Hagio
Acked-by: Konstantin Khlebnikov
Acked-by: Michael S. Tsirkin
Acked-by: Pankaj gupta
Signed-off-by: David Hildenbrand
---
Documentation/admin-guide/mm/pagemap.rst | 9 ++---
fs/proc/page.c
a macro
- "vmw_balloon: mark inflated pages PG_offline"
-- Use helper function + adapt comments
- "PM / Hibernate: exclude all PageOffline() pages"
-- Perform the check separate from swsusp checks.
- Added RBs/ACKs
David Hildenbrand (8):
mm: balloon: update comment about i
on
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Acked-by: Michael S. Tsirkin
Signed-off-by: David Hildenbrand
---
include/linux/balloon_compaction.h | 26 +-
1 file changed, 9 insertions(+), 17 deletions(-)
diff --git a/include/linux/balloo
doval
Cc: Arnd Bergmann
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Cc: Lianbo Jiang
Cc: Borislav Petkov
Cc: Kazuhito Hagio
Acked-by: Michael S. Tsirkin
Acked-by: Dave Young
Signed-off-by: David Hildenbrand
---
kernel/crash_core.c | 2 ++
1 file changed, 2 in
t;Rafael J. Wysocki"
Cc: Pavel Machek
Cc: Len Brown
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Acked-by: Pavel Machek
Acked-by: Rafael J. Wysocki
Signed-off-by: David Hildenbrand
---
kernel/power/snapshot.c | 9 +++--
1 file changed, 7 i
"Michael S. Tsirkin"
Acked-by: Pankaj gupta
Signed-off-by: David Hildenbrand
---
drivers/hv/hv_balloon.c | 14 --
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 211f3fe3a038..47719862e57f 100
ael S. Tsirkin"
Acked-by: Nadav Amit
Signed-off-by: David Hildenbrand
---
drivers/misc/vmw_balloon.c | 32
1 file changed, 32 insertions(+)
diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
index e6126a4b95d3..877611b5659b 100644
--- a/dr
ot;
Suggested-by: Michal Hocko
Acked-by: Michal Hocko
Acked-by: Pavel Machek
Acked-by: Rafael J. Wysocki
Signed-off-by: David Hildenbrand
---
kernel/power/snapshot.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/kernel/power/snapshot.c b/kernel/power/snap
Mark inflated and never onlined pages PG_offline, to tell the world that
the content is stale and should not be dumped.
Cc: Boris Ostrovsky
Cc: Juergen Gross
Cc: Stefano Stabellini
Cc: Andrew Morton
Cc: Matthew Wilcox
Cc: Michal Hocko
Cc: "Michael S. Tsirkin"
Signed-off
balloon driver).
Therefore, don't read and dump pages that are marked as being logically
offline.
Signed-off-by: David Hildenbrand
---
v1 -> v2:
- Fix PAGE_BUDDY_MAPCOUNT_VALUE vs. PAGE_OFFLINE_MAPCOUNT_VALUE
makedumpfile.c | 34 ++
makedumpfile.h | 1 +
On 28.09.18 17:03, David Hildenbrand wrote:
> How to/when to online hotplugged memory is hard to manage for
> distributions because different memory types are to be treated differently.
> Right now, we need complicated udev rules that e.g. check if we are
> running on s390x, on a phy
On 23.11.18 19:06, Michal Suchánek wrote:
> On Fri, 23 Nov 2018 12:13:58 +0100
> David Hildenbrand wrote:
>
>> On 28.09.18 17:03, David Hildenbrand wrote:
>>> How to/when to online hotplugged memory is hard to manage for
>>> distributions because differe
On 26.11.18 13:30, David Hildenbrand wrote:
> On 23.11.18 19:06, Michal Suchánek wrote:
>> On Fri, 23 Nov 2018 12:13:58 +0100
>> David Hildenbrand wrote:
>>
>>> On 28.09.18 17:03, David Hildenbrand wrote:
>>>> How to/when to online hotplugged memor
On 26.11.18 15:20, Michal Suchánek wrote:
> On Mon, 26 Nov 2018 14:33:29 +0100
> David Hildenbrand wrote:
>
>> On 26.11.18 13:30, David Hildenbrand wrote:
>>> On 23.11.18 19:06, Michal Suchánek wrote:
>
>>>>
>>>> If we are going to fake the
On 27.11.18 17:32, Michal Suchánek wrote:
> On Mon, 26 Nov 2018 16:59:14 +0100
> David Hildenbrand wrote:
>
>> On 26.11.18 15:20, Michal Suchánek wrote:
>>> On Mon, 26 Nov 2018 14:33:29 +0100
>>> David Hildenbrand wrote:
>>>
>>>>
e.g. online_type) we are using in that context.
- The "removable" property should never have been named like that. It
should have been "offlinable". Can we still rename that? E.g. boot memory
is sometimes marked as removable ...
David Hildenbrand (4):
mm/memory_ho
hwidefsky
Cc: Heiko Carstens
Signed-off-by: David Hildenbrand
---
drivers/base/memory.c | 38 +++---
include/linux/memory.h | 27 +++
2 files changed, 62 insertions(+), 3 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memo
c: Rob Herring
Cc: Pavel Tatashin
Cc: "mike.tra...@hpe.com"
Cc: Joonsoo Kim
Cc: Wei Yang
Cc: Logan Gunthorpe
Cc: "Jérôme Glisse"
Cc: "Jan H. Schönherr"
Cc: Dave Jiang
Cc: Matthew Wilcox
Cc: Mathieu Malaterre
Signed-off-by: David Hildenbrand
---
arch/ia6
Cc: Michal Hocko
Cc: Michal Suchánek
Cc: Vitaly Kuznetsov
Cc: Dan Williams
Cc: Pavel Tatashin
Signed-off-by: David Hildenbrand
---
drivers/base/memory.c | 3 ---
include/linux/memory.h | 5 -
2 files changed, 8 deletions(-)
diff --git a/drivers/base/memory.c b/drivers/base/memory.
Neuling
Cc: Nathan Fontenot
Cc: YueHaibing
Cc: Vasily Gorbik
Cc: Ingo Molnar
Cc: Stephen Rothwell
Cc: "mike.tra...@hpe.com"
Cc: Oscar Salvador
Cc: Joonsoo Kim
Cc: Mathieu Malaterre
Cc: Michal Hocko
Cc: Arun KS
Cc: Andrew Banman
Cc: Dave Hansen
Cc: Michal Suchánek
Cc: V
On 01.12.18 02:25, Wei Yang wrote:
> On Fri, Nov 30, 2018 at 06:59:19PM +0100, David Hildenbrand wrote:
>> Memory onlining should always be handled by user space, because only user
>> space knows which use cases it wants to satisfy. E.g. memory might be
>> onlined to the MO
On 01.12.18 02:50, Wei Yang wrote:
> On Fri, Nov 30, 2018 at 06:59:20PM +0100, David Hildenbrand wrote:
>> Let's pass a memory block type instead. Pass "MEMORY_BLOCK_NONE" for device
>> memory and for now "MEMORY_BLOCK_UNSPECIFIED" for anything else. No
&g
On 04.12.18 10:44, Michal Suchánek wrote:
> On Fri, 30 Nov 2018 18:59:21 +0100
> David Hildenbrand wrote:
>
>> Let's introduce new types for different kinds of memory blocks and use
>> them in existing code. As I don't see an easy way to split this up,
>>
On 30.11.18 18:59, David Hildenbrand wrote:
> This is the second approach, introducing more meaningful memory block
> types and not changing online behavior in the kernel. It is based on
> latest linux-next.
>
> As we found out during dicussion, user space should always handl
On 20.12.18 14:08, Michal Hocko wrote:
> On Thu 20-12-18 13:58:16, David Hildenbrand wrote:
>> On 30.11.18 18:59, David Hildenbrand wrote:
>>> This is the second approach, introducing more meaningful memory block
>>> types and not changing online behavior in the kernel
On 04.01.19 15:19, Vitaly Kuznetsov wrote:
> Hyper-V memory hotplug protocol has 2M granularity and in Linux x86 we use
> 128M. To deal with it we implement partial section onlining by registering
> custom page onlining callback (hv_online_page()). Later, when more memory
> arrives we try to online
On 07.01.19 14:44, Vitaly Kuznetsov wrote:
> David Hildenbrand writes:
>
>> On 04.01.19 15:19, Vitaly Kuznetsov wrote:
>>> Hyper-V memory hotplug protocol has 2M granularity and in Linux x86 we use
>>> 128M. To deal with it we implement partial section onlining
e kernel by
>> dumping, when reading memory of a partially onlined memory segment
>> (for memory added by the Hyper-V balloon driver).
>>
>> Therefore, don't read and dump pages that are marked as being logically
>> offline.
>>
>> Signed-off-by: David Hilde
On 11.03.19 10:04, Dave Young wrote:
> Hi David,
> On 11/22/18 at 11:06am, David Hildenbrand wrote:
>> Right now, pages inflated as part of a balloon driver will be dumped
>> by dump tools like makedumpfile. While XEN is able to check in the
>> crash kernel whether a certa
On 20.12.18 14:08, Michal Hocko wrote:
> On Thu 20-12-18 13:58:16, David Hildenbrand wrote:
>> On 30.11.18 18:59, David Hildenbrand wrote:
>>> This is the second approach, introducing more meaningful memory block
>>> types and not changing online behavior in the kernel
tps://lkml.org/lkml/2019/10/21/736
[2] https://lkml.org/lkml/2019/10/21/1034
Cc: Michal Hocko
Cc: Dan Williams
Cc: kvm-...@vger.kernel.org
Cc: linuxppc-...@lists.ozlabs.org
Cc: k...@vger.kernel.org
Cc: linux-hyp...@vger.kernel.org
Cc: de...@driverdev.osuosl.org
Cc: xen-de...@lists.xenpr
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