search for: memory_region_unref

...continue; > - } > - if (!memory_region_is_ram(section.mr) || > - memory_region_is_rom(section.mr) || > - memory_region_is_romd(section.mr)) { > - trace_virtio_balloon_bad_addr(pa); > - memory_region_unref(section.mr); > - continue; > - } > + if (virtio_has_feature(s->host_features, > + VIRTIO_BALLOON_F_THP_ORDER)) > + handle_size = BALLOON_PAGE_SIZE << VIRTIO_BALLOON_THP_ORDER; > + > +...

...ending 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_balloon_is_inhibited() && (!kvm_enabled() || >...

...ending 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_balloon_is_inhibited() && (!kvm_enabled() || >...

...y_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_balloon_is_inhibited() && (!kvm_enabled() || kvm_has_sync_mmu())) {...

> 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

...ut > > 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_balloon_is_inhibited() && (!kvm_enabled() || &g...