search for: offline_and_remove_memory

...++ b/include/linux/memory_hotplug.h @@ -313,6 +313,7 @@ extern void try_offline_node(int nid); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int remove_memory(int nid, u64 start, u64 size); extern void __remove_memory(int nid, u64 start, u64 size); +extern int offline_and_remove_memory(int nid, u64 start, u64 size); #else static inline bool is_mem_section_removable(unsigned long pfn, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index d23ff7c5c96b..caf3c93f5f7c 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1742,4 +1742,39 @@ int remove_memory(int nid...

...++ b/include/linux/memory_hotplug.h @@ -311,6 +311,7 @@ extern void try_offline_node(int nid); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int remove_memory(int nid, u64 start, u64 size); extern void __remove_memory(int nid, u64 start, u64 size); +extern int offline_and_remove_memory(int nid, u64 start, u64 size); #else static inline bool is_mem_section_removable(unsigned long pfn, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ab1c31e67fd1..d0d337918a15 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1818,4 +1818,41 @@ int remove_memory(int nid...

...++ b/include/linux/memory_hotplug.h @@ -311,6 +311,7 @@ extern void try_offline_node(int nid); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int remove_memory(int nid, u64 start, u64 size); extern void __remove_memory(int nid, u64 start, u64 size); +extern int offline_and_remove_memory(int nid, u64 start, u64 size); #else static inline bool is_mem_section_removable(unsigned long pfn, diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ab1c31e67fd1..d0d337918a15 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1818,4 +1818,41 @@ int remove_memory(int nid...

...++ b/include/linux/memory_hotplug.h @@ -318,6 +318,7 @@ extern void try_offline_node(int nid); extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); extern int remove_memory(int nid, u64 start, u64 size); extern void __remove_memory(int nid, u64 start, u64 size); +extern int offline_and_remove_memory(int nid, u64 start, u64 size); #else static inline void try_offline_node(int nid) {} diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 936bfe208a6e..bf1941f02a60 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1748,4 +1748,41 @@ int remove_memory(int nid, u64 start, u6...

On Tue 25-02-20 15:27:28, David Hildenbrand wrote: > On 25.02.20 15:11, Michal Hocko wrote: > > On Thu 12-12-19 18:11:32, David Hildenbrand wrote: > >> virtio-mem wants to offline and remove a memory block once it unplugged > >> all subblocks (e.g., using alloc_contig_range()). Let's provide > >> an interface to do that from a driver. virtio-mem already

On Wed, Mar 11, 2020 at 06:19:04PM +0100, David Hildenbrand wrote: > On 11.03.20 18:14, David Hildenbrand wrote: > > virtio-mem wants to offline and remove a memory block once it unplugged > > all subblocks (e.g., using alloc_contig_range()). Let's provide > > an interface to do that from a driver. virtio-mem already supports to > > offline partially unplugged memory

On 07.05.20 12:46, Michael S. Tsirkin wrote: > On Thu, May 07, 2020 at 12:31:11PM +0200, David Hildenbrand wrote: >> virtio-mem wants to offline and remove a memory block once it unplugged >> all subblocks (e.g., using alloc_contig_range()). Let's provide >> an interface to do that from a driver. virtio-mem already supports to >> offline partially unplugged memory

On Thu, May 07, 2020 at 01:33:23PM +0200, David Hildenbrand wrote: > >> I get: > >> > >> error: sha1 information is lacking or useless (mm/memory_hotplug.c). > >> error: could not build fake ancestor > >> > >> which version is this against? Pls post patches on top of some tag > >> in Linus' tree if possible. > > > > As

On Thu, May 07, 2020 at 01:37:30PM +0200, David Hildenbrand wrote: > On 07.05.20 13:34, Michael S. Tsirkin wrote: > > On Thu, May 07, 2020 at 01:33:23PM +0200, David Hildenbrand wrote: > >>>> I get: > >>>> > >>>> error: sha1 information is lacking or useless (mm/memory_hotplug.c). > >>>> error: could not build fake ancestor >

On Thu 19-09-19 16:22:27, David Hildenbrand wrote: > virtio-mem wants to offline and remove a memory block once it unplugged > all subblocks (e.g., using alloc_contig_range()). Let's provide > an interface to do that from a driver. virtio-mem already supports to > offline partially unplugged memory blocks. Offlining a fully unplugged > memory block will not require to migrate

>> I get: >> >> error: sha1 information is lacking or useless (mm/memory_hotplug.c). >> error: could not build fake ancestor >> >> which version is this against? Pls post patches on top of some tag >> in Linus' tree if possible. > > As the cover states, latest linux-next. To be precise > > commit 6b43f715b6379433e8eb30aa9bcc99bd6a585f77

..._hotplug.h > @@ -318,6 +318,7 @@ extern void try_offline_node(int nid); > extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); > extern int remove_memory(int nid, u64 start, u64 size); > extern void __remove_memory(int nid, u64 start, u64 size); > +extern int offline_and_remove_memory(int nid, u64 start, u64 size); > > #else > static inline void try_offline_node(int nid) {} > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 936bfe208a6e..bf1941f02a60 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -1748,4 +1748,41 @@...

>> I get: >> >> error: sha1 information is lacking or useless (mm/memory_hotplug.c). >> error: could not build fake ancestor >> >> which version is this against? Pls post patches on top of some tag >> in Linus' tree if possible. > > As the cover states, latest linux-next. To be precise > > commit 6b43f715b6379433e8eb30aa9bcc99bd6a585f77

..._hotplug.h > @@ -318,6 +318,7 @@ extern void try_offline_node(int nid); > extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages); > extern int remove_memory(int nid, u64 start, u64 size); > extern void __remove_memory(int nid, u64 start, u64 size); > +extern int offline_and_remove_memory(int nid, u64 start, u64 size); > > #else > static inline void try_offline_node(int nid) {} > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 936bfe208a6e..bf1941f02a60 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -1748,4 +1748,41 @@...

On 11.03.20 18:14, David Hildenbrand wrote: > virtio-mem wants to offline and remove a memory block once it unplugged > all subblocks (e.g., using alloc_contig_range()). Let's provide > an interface to do that from a driver. virtio-mem already supports to > offline partially unplugged memory blocks. Offlining a fully unplugged > memory block will not require to migrate any

On 07.05.20 13:34, Michael S. Tsirkin wrote: > On Thu, May 07, 2020 at 01:33:23PM +0200, David Hildenbrand wrote: >>>> I get: >>>> >>>> error: sha1 information is lacking or useless (mm/memory_hotplug.c). >>>> error: could not build fake ancestor >>>> >>>> which version is this against? Pls post patches on top of some tag

On 07.05.20 13:34, Michael S. Tsirkin wrote: > On Thu, May 07, 2020 at 01:33:23PM +0200, David Hildenbrand wrote: >>>> I get: >>>> >>>> error: sha1 information is lacking or useless (mm/memory_hotplug.c). >>>> error: could not build fake ancestor >>>> >>>> which version is this against? Pls post patches on top of some tag

...ry blocks that > have partially unplugged (allocated e.g., via alloc_contig_range()) > subblocks - or are completely unplugged. > > alloc_contig_range()/free_contig_range() [now exposed] is used to > unplug/plug subblocks of memory blocks the are already exposed to Linux. > > offline_and_remove_memory() [new] is used to offline a fully unplugged > memory block and remove it from Linux. > > -------------------------------------------------------------------------- > 3. Changes RFC v4 -> v1 > -------------------------------------------------------------------------- > > O...

...100000000-13fffffff : System RAM 140000000-33fffffff : virtio0 140000000-1bfffffff : System RAM (virtio_mem) 3280000000-32ffffffff : PCI Bus 0000:00 Of course, with more hotplugged memory, it gets worse. When unplugging memory blocks again, try_remove_memory() (via offline_and_remove_memory()) will properly split the resource up again. Signed-off-by: David Hildenbrand <david at redhat.com> --- drivers/virtio/virtio_mem.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index f26f5f64ae...

...-mem: Paravirtualized memory hotunplug part 1 > virtio-mem: Paravirtualized memory hotunplug part 2 > mm: Allow to offline unmovable PageOffline() pages via > MEM_GOING_OFFLINE > virtio-mem: Allow to offline partially unplugged memory blocks > mm/memory_hotplug: Introduce offline_and_remove_memory() > virtio-mem: Offline and remove completely unplugged memory blocks > virtio-mem: Better retry handling > MAINTAINERS: Add myself as virtio-mem maintainer > virtio-mem: Add parent resource for all added "System RAM" > virtio-mem: Drop manual check for already pr...