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Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/hypervisor/2480')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/hypervisor/2480 | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/hypervisor/2480 b/results/classifier/deepseek-2-tmp/output/hypervisor/2480 deleted file mode 100644 index d4049ddfe..000000000 --- a/results/classifier/deepseek-2-tmp/output/hypervisor/2480 +++ /dev/null @@ -1,30 +0,0 @@ - -Two questions about VFIO device live migration -Description of problem: -For my own pcie device, i implement system memory && device memory dirty bitmap track and works well - -use pre-copy mode live migration by the way. - -first question: -- for system memory dirty bitmap sync, notice that last sync will come early than i expected - read qemu code and found qemu will call every savevm_state.handlers->save_live_complete_precopy callback - in "qemu_savevm_state_complete_precopy_iterable", and "vfio" handler will always behind "ram". - so here is question, my own vfio device will only be halted after "vfio" handler enter - save_live_complete_precopy, and last system memory dirty bitmap sync will come with "ram"'s - save_live_complete_precopy, there will be some system dirty between this period, should we add one more - system dirty bitmap sync after "vfio"'s save_live_complete_precopy - -second question: -- notice that qemu will clean up migration and call every savevm_state.handlers->save_cleanup call back, and - in this function, qemu will only call vfio listener's log_global_stop call back when vm_is_running - but for my vfio device, state will be paused(postmigrate) when enter here, so there is no chance for qemu - to relese some resource create by my device kernel mode driver, where should i put the logic about "stop - migration resource" anyway - -Thanks ^_^ -Steps to reproduce: -1. -2. -3. -Additional information: - |