search for: balloon_page

...ruct list_head list; +}; + +#define VIRTIO_MAX_SG 2 + +struct virtballoon { + struct virtio_device *dev; + struct virtqueue *vq; + struct task_struct *balloon_thread; + wait_queue_head_t balloon_wait; + wait_queue_head_t rmmod_wait; + uint32_t target_nrpages; + atomic_t inflight_bufs; +}; + +struct balloon_page { + struct page *bpage; + struct list_head bp_list; +}; + +struct virtballoon virtballoon; + +struct balloon_buf *alloc_balloon_buf(void) +{ + struct balloon_buf *buf; + + buf = kzalloc(sizeof(struct balloon_buf), GFP_KERNEL); + if (!buf) + printk(KERN_ERR "%s: allocation failed\n", __fu...

...ruct list_head list; +}; + +#define VIRTIO_MAX_SG 2 + +struct virtballoon { + struct virtio_device *dev; + struct virtqueue *vq; + struct task_struct *balloon_thread; + wait_queue_head_t balloon_wait; + wait_queue_head_t rmmod_wait; + uint32_t target_nrpages; + atomic_t inflight_bufs; +}; + +struct balloon_page { + struct page *bpage; + struct list_head bp_list; +}; + +struct virtballoon virtballoon; + +struct balloon_buf *alloc_balloon_buf(void) +{ + struct balloon_buf *buf; + + buf = kzalloc(sizeof(struct balloon_buf), GFP_KERNEL); + if (!buf) + printk(KERN_ERR "%s: allocation failed\n", __fu...

CC'ing virtualization list. On (Thu) 31 Mar 2016 [19:00:24], Dr. David Alan Gilbert wrote: > Hi, > I was reading the balloon code and am confused as to how/if ballooning > works on hosts where the host page size is larger than the > target page size. > > static void balloon_page(void *addr, int deflate) > { > #if defined(__linux__) > if (!qemu_balloon_is_inhibited() && (!kvm_enabled() || > kvm_has_sync_mmu())) { > qemu_madvise(addr, TARGET_PAGE_SIZE, > deflate ? QEMU_MADV_WILLNEE...

CC'ing virtualization list. On (Thu) 31 Mar 2016 [19:00:24], Dr. David Alan Gilbert wrote: > Hi, > I was reading the balloon code and am confused as to how/if ballooning > works on hosts where the host page size is larger than the > target page size. > > static void balloon_page(void *addr, int deflate) > { > #if defined(__linux__) > if (!qemu_balloon_is_inhibited() && (!kvm_enabled() || > kvm_has_sync_mmu())) { > qemu_madvise(addr, TARGET_PAGE_SIZE, > deflate ? QEMU_MADV_WILLNEE...

...e(section.mr), > pa); > /* Using memory_region_get_ram_ptr is bending the rules a bit, but > should be OK because we only want a single page. */ > addr = section.offset_within_region; > balloon_page(memory_region_get_ram_ptr(section.mr) + addr, > !!(vq == s->dvq)); > memory_region_unref(section.mr); > } > > so all that happens when we get a page is balloon_page. > and > > static void balloon_page(void *addr, int deflate)...

...e(section.mr), > pa); > /* Using memory_region_get_ram_ptr is bending the rules a bit, but > should be OK because we only want a single page. */ > addr = section.offset_within_region; > balloon_page(memory_region_get_ram_ptr(section.mr) + addr, > !!(vq == s->dvq)); > memory_region_unref(section.mr); > } > > so all that happens when we get a page is balloon_page. > and > > static void balloon_page(void *addr, int deflate)...

..._output(memory_region_name(section.mr), pa); /* Using memory_region_get_ram_ptr is bending the rules a bit, but should be OK because we only want a single page. */ addr = section.offset_within_region; balloon_page(memory_region_get_ram_ptr(section.mr) + addr, !!(vq == s->dvq)); memory_region_unref(section.mr); } so all that happens when we get a page is balloon_page. and static void balloon_page(void *addr, int deflate) { #if defined(__linux__) if (!qemu_...

> Subject: Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration > optimization > > On Fri, Mar 04, 2016 at 09:08:44AM +0000, Li, Liang Z wrote: > > > On Fri, Mar 04, 2016 at 01:52:53AM +0000, Li, Liang Z wrote: > > > > > I wonder if it would be possible to avoid the kernel changes > > > > > by parsing /proc/self/pagemap - if that

> Subject: Re: [Qemu-devel] [RFC qemu 0/4] A PV solution for live migration > optimization > > On Fri, Mar 04, 2016 at 09:08:44AM +0000, Li, Liang Z wrote: > > > On Fri, Mar 04, 2016 at 01:52:53AM +0000, Li, Liang Z wrote: > > > > > I wonder if it would be possible to avoid the kernel changes > > > > > by parsing /proc/self/pagemap - if that

...pa); > > /* Using memory_region_get_ram_ptr is bending the rules a bit, but > > should be OK because we only want a single page. */ > > addr = section.offset_within_region; > > balloon_page(memory_region_get_ram_ptr(section.mr) + addr, > > !!(vq == s->dvq)); > > memory_region_unref(section.mr); > > } > > > > so all that happens when we get a page is balloon_page. > > and > > > > static vo...