On Thu, May 15, 2014 at 11:27:27AM -0700, Mario Smarduch wrote: > This is v6 patcheset of live mgiration support for ARMv7. migration This is an extremely terse cover letter. It would have been nice with a few sentences of which existing features this leverages, which support was missing, what the preferred approach is, etc. Also, links to a wiki page or just a few notes on how you did the testing below with which user space tools etc. would also have been great. > > - Tested on two 4-way A15 hardware, QEMU 2-way/4-way SMP guest upto 2GB > - Various dirty data rates tested - 2GB/1s ... 2048 pgs/5ms > - validated source/destination memory image integrity > > Changes since v1: > - add unlock of VM mmu_lock to prevent a deadlock > - moved migratiion active inside mmu_lock acquire for visibility in 2nd stage > data abort handler > - Added comments > > Changes since v2: > - move initial VM write protect to memory region architecture prepare function > (needed to make dirty logging function generic) > - added stage2_mark_pte_ro() - to mark ptes ro - Marc's comment > - optimized initial VM memory region write protect to do fewer table lookups - > applied Marc's comment for walking dirty bitmap mask > - added pud_addr_end() for stage2 tables, to make the walk 4-level > - added kvm_flush_remote_tlbs() to use ARM TLB invalidation, made the generic > one weak, Marc's comment to for generic dirty bitmap log function > - optimized walking dirty bit map mask to skip upper tables - Marc's comment > - deleted x86,arm kvm_vm_ioctl_get_dirty_log(), moved to kvm_main.c tagged > the function weak - Marc's comment > - changed Data Abort handler pte index handling - Marc's comment > > Changes since v3: > - changed pte updates to reset write bit instead of setting default > value for existing pte's - Steve's comment > - In addition to PUD add 2nd stage >4GB range functions - Steves > suggestion > - Restructured initial memory slot write protect function for PGD, PUD, PMD > table walking - Steves suggestion > - Renamed variable types to resemble their use - Steves suggestions > - Added couple pte helpers for 2nd stage tables - Steves suggestion > - Updated unmap_range() that handles 2nd stage tables and identity mappings > to handle 2nd stage addresses >4GB. Left ARMv8 unchanged. > > Changes since v4: > - rebased to 3.15.0-rc1 - 'next' to pickup p*addr_end patches - Gavins comment > - Update PUD address end function to support 4-level page table walk > - Elimiated 5th patch of the series that fixed unmap_range(), since it was > fixed by Marcs patches. > > Changes since v5: > - Created seperate entry point for VMID TLB flush with no param - Christoffers > comment > - Update documentation for kvm_flush_remote_tlbs() - Christoffers comment > - Simplified splitting of huge pages - inittial WP and 2nd stage DABT handler > clear the huge page PMD, and use current code to fault in small pages. > Removed kvm_split_pmd(). > > Mario Smarduch (4): > add ARMv7 HYP API to flush VM TLBs without address param > live migration support for initial write protect of VM > live migration support for VM dirty log management > add 2nd stage page fault handling during live migration > > arch/arm/include/asm/kvm_asm.h | 1 + > arch/arm/include/asm/kvm_host.h | 11 ++ > arch/arm/include/asm/kvm_mmu.h | 10 ++ > arch/arm/kvm/arm.c | 8 +- > arch/arm/kvm/interrupts.S | 11 ++ > arch/arm/kvm/mmu.c | 292 ++++++++++++++++++++++++++++++++++++++- > arch/x86/kvm/x86.c | 86 ------------ > virt/kvm/kvm_main.c | 84 ++++++++++- > 8 files changed, 409 insertions(+), 94 deletions(-) > > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
