search for: page_bmap_size

...diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index f59cb4f..4416370 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -42,6 +42,10 @@ #define OOM_VBALLOON_DEFAULT_PAGES 256 #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) +#define PAGE_BMAP_COUNT_MAX 32 + static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; module_param(oom_pages, int, S_IRUSR | S_IWUSR); MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); @@ -50,6 +54,16 @@ MOD...

...diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index f59cb4f..3f4a161 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -42,6 +42,10 @@ #define OOM_VBALLOON_DEFAULT_PAGES 256 #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) +#define PAGE_BMAP_COUNT_MAX 32 + static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; module_param(oom_pages, int, S_IRUSR | S_IWUSR); MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); @@ -50,6 +54,14 @@ MOD...

...oon.c b/drivers/virtio/virtio_balloon.c > index f59cb4f..4416370 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > MODULE_PARM_DESC(oom_pages, "pages to free on OOM&...

...oon.c b/drivers/virtio/virtio_balloon.c > index f59cb4f..4416370 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > MODULE_PARM_DESC(oom_pages, "pages to free on OOM&...

...on.c >> index f59cb4f..4416370 100644 >> --- a/drivers/virtio/virtio_balloon.c >> +++ b/drivers/virtio/virtio_balloon.c >> @@ -42,6 +42,10 @@ >> #define OOM_VBALLOON_DEFAULT_PAGES 256 >> #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 >> >> +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) >> +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) >> +#define PAGE_BMAP_COUNT_MAX 32 >> + >> static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; >> module_param(oom_pages, int, S_IRUSR | S_IWUSR); >> MODULE_PARM_DESC(oom_pages,...

...diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c index f59cb4f..5e2e7cc 100644 --- a/drivers/virtio/virtio_balloon.c +++ b/drivers/virtio/virtio_balloon.c @@ -42,6 +42,10 @@ #define OOM_VBALLOON_DEFAULT_PAGES 256 #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) +#define PAGE_BMAP_COUNT_MAX 32 + static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; module_param(oom_pages, int, S_IRUSR | S_IWUSR); MODULE_PARM_DESC(oom_pages, "pages to free on OOM"); @@ -50,6 +54,10 @@ MO...

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration

Take over this work from Liang. This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 1) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please check patch 0003 for more details about optimization 1). For an idle guest with 8GB RAM, optimization 2) can help shorten the total live migration

...oon.c b/drivers/virtio/virtio_balloon.c > index f59cb4f..5e2e7cc 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + Please prefix with VIRTIO_BALLOON_ and add comments. > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); >...

...oon.c b/drivers/virtio/virtio_balloon.c > index f59cb4f..5e2e7cc 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + Please prefix with VIRTIO_BALLOON_ and add comments. > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); >...

...loon.c b/drivers/virtio/virtio_balloon.c index > f59cb4f..3f4a161 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > MODULE_PARM_DESC(oom_pages, "pages to free on OOM&qu...

...loon.c b/drivers/virtio/virtio_balloon.c index > f59cb4f..3f4a161 100644 > --- a/drivers/virtio/virtio_balloon.c > +++ b/drivers/virtio/virtio_balloon.c > @@ -42,6 +42,10 @@ > #define OOM_VBALLOON_DEFAULT_PAGES 256 > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > +#define PAGE_BMAP_COUNT_MAX 32 > + > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > MODULE_PARM_DESC(oom_pages, "pages to free on OOM&qu...

...imply use the ruler once and get to know that the object is 1-meter long. Case 2: To measure a 11-meter long object (i.e. pfn_max=11, pfn_min=0). We will first see if we can extend the 2-meter long ruler, for example, to 12-meter by getting another five 2-meter rulers and combine them (i.e. extend_page_bmap_size() to allocate page_bmap[1], page_bmap[2]...page_bmap[5]). Case 2.1: If the length of the ruler is successfully extended to 12-meter, that is, we get a 12-meter long ruler, then we can simply use the ruler once and know the length of the object is 1...

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Please read each patch commit log for details. Changes: v7->v8: 1) Use only one chunk format, instead of two. 2) re-write the virtio-balloon implementation patch. 3) commit changes 4)

...100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -42,6 +42,10 @@ > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > > > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > > > +#define PAGE_BMAP_COUNT_MAX 32 > > > + > > > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > > > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > > &g...

...100644 > > > --- a/drivers/virtio/virtio_balloon.c > > > +++ b/drivers/virtio/virtio_balloon.c > > > @@ -42,6 +42,10 @@ > > > #define OOM_VBALLOON_DEFAULT_PAGES 256 #define > > > VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > > > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > > > +#define PAGE_BMAP_COUNT_MAX 32 > > > + > > > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > > > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > > &g...

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

This patch series implements two optimizations: 1) transfer pages in chuncks between the guest and host; 2) transfer the guest unused pages to the host so that they can be skipped to migrate in live migration. Changes: v8->v9: 1) Split the two new features, VIRTIO_BALLOON_F_BALLOON_CHUNKS and VIRTIO_BALLOON_F_MISC_VQ, which were mixed together in the previous implementation; 2) Simpler

...index > > f59cb4f..3f4a161 100644 > > --- a/drivers/virtio/virtio_balloon.c > > +++ b/drivers/virtio/virtio_balloon.c > > @@ -42,6 +42,10 @@ > > #define OOM_VBALLOON_DEFAULT_PAGES 256 > > #define VIRTBALLOON_OOM_NOTIFY_PRIORITY 80 > > > > +#define PAGE_BMAP_SIZE (8 * PAGE_SIZE) > > +#define PFNS_PER_PAGE_BMAP (PAGE_BMAP_SIZE * BITS_PER_BYTE) > > +#define PAGE_BMAP_COUNT_MAX 32 > > + > > static int oom_pages = OOM_VBALLOON_DEFAULT_PAGES; > > module_param(oom_pages, int, S_IRUSR | S_IWUSR); > > MODULE_PARM_DESC(oom_pages,...