From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
ess()
Added checks for isolate and cma types to for_each_reporting_migratetype_order
Added virtio-dev, Michal Hocko, and Oscar Salvador to to:/cc:
Rebased on latest linux-next and QEMU git trees
---
Alexander Duyck (6):
mm: Adjust shuffle code to allow for future coalescing
mm: Mov
On Mon, Aug 12, 2019 at 3:24 PM Dan Williams wrote:
>
> On Mon, Aug 12, 2019 at 2:33 PM Alexander Duyck
> wrote:
> >
> > From: Alexander Duyck
> >
> > This patch is meant to move the head/tail adding logic out of the shuffle
>
> s/This patch is meant
From: Alexander Duyck
Add support for what I am referring to as "unused page reporting".
Basically the idea is to function very similar to how the balloon works
in that we basically end up madvising the page as not being used. However
we don't really need to bother with any deflate
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
From: Alexander Duyck
In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file
From: Alexander Duyck
This patch is meant to move the head/tail adding logic out of the shuffle
code and into the __free_one_page function since ultimately that is where
it is really needed anyway. By doing this we should be able to reduce the
overhead and can consolidate all of the list
On Thu, Aug 22, 2019 at 9:19 AM Nitesh Narayan Lal wrote:
>
>
> On 8/21/19 10:59 AM, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > In order to pave the way for free page reporting in virtualized
> > environments we will need a way to get pages out o
On Fri, Aug 30, 2019 at 8:15 AM Nitesh Narayan Lal wrote:
>
>
> On 8/12/19 2:47 PM, Alexander Duyck wrote:
> > On Mon, Aug 12, 2019 at 6:13 AM Nitesh Narayan Lal
> > wrote:
> >> This patch introduces the core infrastructure for free page reporting in
> &g
On Tue, Sep 3, 2019 at 12:32 AM Michael S. Tsirkin wrote:
>
> On Mon, Aug 12, 2019 at 02:33:56PM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Add support for the page reporting feature provided by virtio-balloon.
> > Reporting differs from the
On Fri, 2019-08-23 at 01:16 -0400, Pankaj Gupta wrote:
> > On Thu, 2019-08-22 at 06:43 -0400, Pankaj Gupta wrote:
> > > > This series provides an asynchronous means of reporting to a hypervisor
> > > > that a guest page is no longer in use and can have the data associated
> > > > with it dropped.
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
ed put_reported_page to free_reported_page, added order as argument
Dropped check for CMA type as I believe we should be reporting those
Added code to allow moving of reported pages into and out of isolation
Defined page reporting order as minimum of Huge Page size vs MAX_ORDER - 1
Cleaned up u
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
From: Alexander Duyck
In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
From: Alexander Duyck
We need to make certain to advertise support for page poison tracking if
we want to actually get data on if the guest will be poisoning pages. So
if free page hinting is active we should add page poisoning support and
let the guest disable it if it isn't using it.
Page
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
of static branch usage for page_reporting_notify_enabled
Changes from v6:
https://lore.kernel.org/lkml/20190821145806.20926.22448.stgit@localhost.localdomain/
Rebased on linux-next for 20190903
Added jump label to __page_reporting_request so we release RCU read lock
Removed "- 1" from ca
From: Alexander Duyck
In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file
From: Alexander Duyck
Add support for what I am referring to as "unused page reporting".
Basically the idea is to function very similar to how the balloon works
in that we basically end up madvising the page as not being used. However
we don't really need to bother with any deflate
From: Alexander Duyck
We need to make certain to advertise support for page poison tracking if
we want to actually get data on if the guest will be poisoning pages. So
if free page hinting is active we should add page poisoning support and
let the guest disable it if it isn't using it.
Page
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
On Wed, Sep 4, 2019 at 3:44 AM Michael S. Tsirkin wrote:
>
> On Tue, Sep 03, 2019 at 07:13:32AM -0700, Alexander Duyck wrote:
> > On Tue, Sep 3, 2019 at 12:32 AM Michael S. Tsirkin wrote:
> > >
> > > On Mon, Aug 12, 2019 at 02:33:56PM -0700, Alexander Duyck wrote:
On Wed, 2019-09-04 at 15:28 -0400, Michael S. Tsirkin wrote:
> On Wed, Sep 04, 2019 at 08:10:55AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Currently the page poisoning setting wasn't being enabled unless free page
> > hinting was enabled. Ho
On Wed, 2019-09-04 at 15:17 -0400, Michael S. Tsirkin wrote:
> On Wed, Sep 04, 2019 at 08:11:02AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Add support for the page reporting feature provided by virtio-balloon.
> > Reporting differs from the re
On Thu, 2019-09-12 at 17:35 +0100, Mel Gorman wrote:
> On Thu, Sep 12, 2019 at 11:19:25AM +0200, Michal Hocko wrote:
> > On Wed 11-09-19 08:12:03, Alexander Duyck wrote:
> > > On Wed, Sep 11, 2019 at 4:36 AM Michal Hocko wrote:
> > > > On Tue 10-09-19 1
On Thu, 2019-09-12 at 11:19 +0200, Michal Hocko wrote:
> On Wed 11-09-19 08:12:03, Alexander Duyck wrote:
> > On Wed, Sep 11, 2019 at 4:36 AM Michal Hocko wrote:
> > > On Tue 10-09-19 14:23:40, Alexander Duyck wrote:
> > > [...]
> > > > We don't put
On Tue, 2019-09-10 at 19:45 +0200, Michal Hocko wrote:
> On Tue 10-09-19 07:46:50, Alexander Duyck wrote:
> > On Tue, Sep 10, 2019 at 5:23 AM Michal Hocko wrote:
> > > On Sat 07-09-19 10:25:28, Alexander Duyck wrote:
> > > > From: Alexander Duyck
> > &
On Tue, 2019-09-10 at 20:00 +0200, Michal Hocko wrote:
> On Tue 10-09-19 19:52:13, Michal Hocko wrote:
> > On Tue 10-09-19 09:05:43, Alexander Duyck wrote:
> [...]
> > > All this is providing is just a report and it is optional if the
> > > hypervisor will act on it o
On Tue, Sep 10, 2019 at 5:23 AM Michal Hocko wrote:
>
> On Sat 07-09-19 10:25:28, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > In order to support page reporting it will be necessary to store and
> > retrieve the migratetype of a page. To enable that I
> with me.
>
> On Sat 07-09-19 10:25:03, Alexander Duyck wrote:
> [...]
> > This series provides an asynchronous means of reporting to a hypervisor
> > that a guest page is no longer in use and can have the data associated
> > with it dropped. To do this I have imp
On Tue, Sep 10, 2019 at 5:20 AM Michal Hocko wrote:
>
> On Sat 07-09-19 10:25:20, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Move the head/tail adding logic out of the shuffle code and into the
> > __free_one_page function since ultimately that is
On Tue, 2019-09-10 at 14:11 +0200, Michal Hocko wrote:
> On Mon 09-09-19 08:11:36, Alexander Duyck wrote:
> > On Mon, 2019-09-09 at 10:14 +0200, David Hildenbrand wrote:
> > > On 07.09.19 19:25, Alexander Duyck wrote:
> > > > From: Alexander Duyck
> >
On Mon, 2019-09-09 at 10:14 +0200, David Hildenbrand wrote:
> On 07.09.19 19:25, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Change the logic used to generate randomness in the suffle path so that we
> > can avoid cache line bouncing. The previous l
On Tue, Sep 10, 2019 at 7:47 AM Michal Hocko wrote:
>
> On Tue 10-09-19 07:42:43, Alexander Duyck wrote:
> > On Tue, Sep 10, 2019 at 5:42 AM Michal Hocko wrote:
> > >
> > > I wanted to review "mm: Introduce Reported pages" just realize that I
> >
On Mon, 2019-09-09 at 12:47 +0300, Kirill A. Shutemov wrote:
> On Sat, Sep 07, 2019 at 10:25:20AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Move the head/tail adding logic out of the shuffle code and into the
> > __free_one_page function sin
On Mon, 2019-09-09 at 12:56 +0300, Kirill A. Shutemov wrote:
> On Sat, Sep 07, 2019 at 10:25:28AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > In order to support page reporting it will be necessary to store and
> > retrieve the migratetype of
On Mon, 2019-09-09 at 11:01 -0700, Alexander Duyck wrote:
> On Mon, 2019-09-09 at 12:56 +0300, Kirill A. Shutemov wrote:
> > On Sat, Sep 07, 2019 at 10:25:28AM -0700, Alexander Duyck wrote:
> > > From: Alexander Duyck
> > >
> > > In order to support page rep
From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
From: Alexander Duyck
In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file
d of HUGETLB_ORDER and MAX_ORDER - 1
Boundary allocation now dynamic to support HUGETLB_PAGE_SIZE_VARIABLE option
Made use of existing code/functions to reduce size of move_to_boundary function
Dropped unused zone pointer from add_to/del_from_boundary functions
Added additional possible mm and arm
From: Alexander Duyck
Move the static definition for things such as HUGETLB_PAGE_ORDER out of
asm/pgtable.h and place it in page-defs.h. By doing this the includes
become much easier to deal with as currently arm64 is the only architecture
that didn't include this definition in the asm/page.h
From: Alexander Duyck
Change the logic used to generate randomness in the suffle path so that we
can avoid cache line bouncing. The previous logic was sharing the offset
and entropy word between all CPUs. As such this can result in cache line
bouncing and will ultimately hurt performance when
Sorry about that. Looks like I fat fingered things and copied the
command line into the cover page. I corrected the subject here, and
pulled the command line out of the message below.
- Alex
On Sat, Sep 7, 2019 at 10:25 AM Alexander Duyck
wrote:
> This series provides an asynchronous me
On Fri, Sep 6, 2019 at 8:23 AM Michael S. Tsirkin wrote:
>
> On Fri, Sep 06, 2019 at 07:53:21AM -0700, Alexander Duyck wrote:
> > This series provides an asynchronous means of reporting to a hypervisor
> > that a guest page is no longer in use and can have the data associated
&
On Mon, 2019-09-09 at 12:47 +0300, Kirill A. Shutemov wrote:
> On Sat, Sep 07, 2019 at 10:25:20AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Move the head/tail adding logic out of the shuffle code and into the
> > __free_one_page function sin
On Mon, 2019-09-09 at 10:59 +0200, David Hildenbrand wrote:
> On 07.09.19 19:26, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Currently the page poisoning setting wasn't being enabled unless free page
> > hinting was enabled. However we will need the pa
On Mon, 2019-09-09 at 12:07 +0300, Kirill A. Shutemov wrote:
> On Sat, Sep 07, 2019 at 10:25:12AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Change the logic used to generate randomness in the suffle path so that we
>
> Typo.
>
>
On Mon, 2019-09-09 at 10:14 +0200, David Hildenbrand wrote:
> On 07.09.19 19:25, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Change the logic used to generate randomness in the suffle path so that we
> > can avoid cache line bouncing. The previous l
On Mon, 2019-09-09 at 10:52 +0200, David Hildenbrand wrote:
> On 07.09.19 19:25, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Move the static definition for things such as HUGETLB_PAGE_ORDER out of
> > asm/pgtable.h and place it in page-defs.h. By doing t
On Mon, 2019-09-09 at 18:35 +0300, Kirill A. Shutemov wrote:
> On Mon, Sep 09, 2019 at 08:22:11AM -0700, Alexander Duyck wrote:
> > > > + area = >free_area[order];
> > > > + if (is_shuffle_order(order) ? shuffle_pick_tail() :
> > > > +
On Tue, Sep 17, 2019 at 10:49 AM Will Deacon wrote:
>
> On Sat, Sep 07, 2019 at 10:25:45AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Move the static definition for things such as HUGETLB_PAGE_ORDER out of
> > asm/pgtable.h and pla
On Wed, 2019-09-18 at 13:58 -0400, Michael S. Tsirkin wrote:
> On Wed, Sep 18, 2019 at 10:53:05AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck
> >
> > Currently the page poisoning setting wasn't being enabled unless free page
> > hinting was enabled. Ho
From: Alexander Duyck
Add support for what I am referring to as "unused page reporting".
Basically the idea is to function very similar to how the balloon works
in that we basically end up madvising the page as not being used. However
we don't really need to bother with any deflate
From: Alexander Duyck
We need to make certain to advertise support for page poison tracking if
we want to actually get data on if the guest will be poisoning pages. So
if free page hinting is active we should add page poisoning support and
let the guest disable it if it isn't using it.
Page
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
From: Alexander Duyck
With this patch we are adding the pieces needed to enable the reporting of
pages to a specific device. That device needs to register a page reporting
device that can be used to handle notifications that that pages are unused.
Registering the device will in turn enable
eporting.h between include/linux/ and mm/
Added #include " to mm/page_reporting.h
Renamed page_reporting_startup/shutdown to page_reporting_register/unregister
Updated comments related to virtio page poison tracking feature
---
Alexander Duyck (6):
mm: Adjust shuffle code to a
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
From: Alexander Duyck
In order to support page reporting it will be necessary to store and
retrieve the migratetype of a page. To enable that I am moving the set and
get operations for pcppage_migratetype into the mm/internal.h header so
that they can be used outside of the page_alloc.c file
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
uffle per-cpu optimization into seperate patch
Moved check for !phdev->capacity into reporting patch where it belongs
Added Reviewed-by tags received for v7
---
Alexander Duyck (7):
mm: Add per-cpu logic to page shuffling
mm: Adjust shuffle code to allow for future coalescing
From: Alexander Duyck
Change the logic used to generate randomness in the suffle path so that we
can avoid cache line bouncing. The previous logic was sharing the offset
and entropy word between all CPUs. As such this can result in cache line
bouncing and will ultimately hurt performance when
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
From: Alexander Duyck
Add support for what I am referring to as "unused page reporting".
Basically the idea is to function very similar to how the balloon works
in that we basically end up madvising the page as not being used. However
we don't really need to bother with any deflate
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
From: Alexander Duyck
We need to make certain to advertise support for page poison tracking if
we want to actually get data on if the guest will be poisoning pages. So
if free page hinting is active we should add page poisoning support and
let the guest disable it if it isn't using it.
Page
On Fri, Sep 6, 2019 at 8:23 AM Michael S. Tsirkin wrote:
>
> On Fri, Sep 06, 2019 at 07:53:21AM -0700, Alexander Duyck wrote:
> > This series provides an asynchronous means of reporting to a hypervisor
> > that a guest page is no longer in use and can have the data associated
&
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
On Wed, Sep 11, 2019 at 4:36 AM Michal Hocko wrote:
>
> On Tue 10-09-19 14:23:40, Alexander Duyck wrote:
> [...]
> > We don't put any limitations on the allocator other then that it needs to
> > clean up the metadata on allocation, and that it cannot allocate a page
>
From: Alexander Duyck
Move the head/tail adding logic out of the shuffle code and into the
__free_one_page function since ultimately that is where it is really
needed anyway. By doing this we should be able to reduce the overhead
and can consolidate all of the list addition bits in one spot
o reduce code size
Removed dead code in non-reporting path
---
Alexander Duyck (6):
mm: Adjust shuffle code to allow for future coalescing
mm: Use zone and order instead of free area in free_list manipulators
mm: Introduce Reported pages
mm: Add device side and notifier for unuse
From: Alexander Duyck
In order to pave the way for free page reporting in virtualized
environments we will need a way to get pages out of the free lists and
identify those pages after they have been returned. To accomplish this,
this patch adds the concept of a Reported Buddy, which
From: Alexander Duyck
In order to enable the use of the zone from the list manipulator functions
I will need access to the zone pointer. As it turns out most of the
accessors were always just being directly passed >free_area[order]
anyway so it would make sense to just f
From: Alexander Duyck
With this patch we are adding the pieces needed to enable the reporting of
pages to a specific device. That device needs to register a page reporting
device that can be used to handle notifications that that pages are unused.
Registering the device will in turn enable
From: Alexander Duyck
Currently the page poisoning setting wasn't being enabled unless free page
hinting was enabled. However we will need the page poisoning tracking logic
as well for unused page reporting. As such pull it out and make it a
separate bit of config in the probe function
From: Alexander Duyck
Add support for the page reporting feature provided by virtio-balloon.
Reporting differs from the regular balloon functionality in that is is
much less durable than a standard memory balloon. Instead of creating a
list of pages that cannot be accessed the pages are only
From: Alexander Duyck
We need to make certain to advertise support for page poison tracking if
we want to actually get data on if the guest will be poisoning pages. So
if free page hinting is active we should add page poisoning support and
let the guest disable it if it isn't using it.
Page
From: Alexander Duyck
Add support for what I am referring to as "unused page reporting".
Basically the idea is to function very similar to how the balloon works
in that we basically end up madvising the page as not being used. However
we don't really need to bother with any deflate
From: Alexander Duyck
Add a bit for the page reporting feature provided by virtio-balloon.
This patch should be replaced once the feature is added to the Linux kernel
and the bit is backported into this exported kernel header.
Signed-off-by: Alexander Duyck
---
include/standard-headers/linux
On Tue, 2019-10-01 at 17:35 +0200, David Hildenbrand wrote:
> On 01.10.19 17:29, Alexander Duyck wrote:
> > This series provides an asynchronous means of reporting to a hypervisor
> > that a guest page is no longer in use and can have the data associated
> > with it dropp
On Thu, Sep 26, 2019 at 5:22 AM Michal Hocko wrote:
>
> On Tue 24-09-19 08:20:22, Alexander Duyck wrote:
> > On Tue, Sep 24, 2019 at 7:23 AM Michal Hocko wrote:
> > >
> > > On Wed 18-09-19 10:52:25, Alexander Duyck wrote:
> > > [...]
> > > > In
On Mon, Sep 23, 2019 at 8:00 AM Michael S. Tsirkin wrote:
>
> On Mon, Sep 23, 2019 at 07:50:15AM -0700, Alexander Duyck wrote:
> > > > +static inline void
> > > > +page_reporting_reset_boundary(struct zone *zone, unsigned int order,
> > > >
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