search for: ram_list

...g_free(bmap->unsentmap); g_free(bmap); } @@ -1873,6 +1873,28 @@ err: return ret; } +static void filter_out_guest_free_pages(unsigned long *free_pages_bmap) +{ + RAMBlock *block; + DirtyMemoryBlocks *blocks; + unsigned long end, page; + + blocks = atomic_rcu_read(&ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]); + block = QLIST_FIRST_RCU(&ram_list.blocks); + end = TARGET_PAGE_ALIGN(block->offset + + block->used_length) >> TARGET_PAGE_BITS; + page = block->offset >> TARGET_PAGE_BITS; + + while (page < e...

On 05.02.20 10:49, Wang, Wei W wrote: > On Wednesday, February 5, 2020 5:37 PM, David Hildenbrand wrote: >>> >>> Not sure how TCG tracks the dirty bits. But In whatever >>> implementation, the hypervisor should have >> >> There is only a single bitmap for that purpose. (well, the one where KVM >> syncs to) >> >>> already dealt with the

On 05.02.20 10:49, Wang, Wei W wrote: > On Wednesday, February 5, 2020 5:37 PM, David Hildenbrand wrote: >>> >>> Not sure how TCG tracks the dirty bits. But In whatever >>> implementation, the hypervisor should have >> >> There is only a single bitmap for that purpose. (well, the one where KVM >> syncs to) >> >>> already dealt with the

The current QEMU live migration implementation mark the all the guest's RAM pages as dirtied in the ram bulk stage, all these pages will be processed and that takes quit a lot of CPU cycles. >From guest's point of view, it doesn't care about the content in free pages. We can make use of this fact and skip processing the free pages in the ram bulk stage, it can save a lot CPU cycles

The current QEMU live migration implementation mark the all the guest's RAM pages as dirtied in the ram bulk stage, all these pages will be processed and that takes quit a lot of CPU cycles. >From guest's point of view, it doesn't care about the content in free pages. We can make use of this fact and skip processing the free pages in the ram bulk stage, it can save a lot CPU cycles

Hi all, this is the long awaited patch series to add xen device model support in qemu; the main author is Anthony Perard. Developing this series we tried to come up with the cleanest possible solution from the qemu point of view, limiting the amount of changes to common code as much as possible. The end result still requires a couple of hooks in piix_pci but overall the impact should be very