On 06/12/18 14:21, lantianyu1986@xxxxxxxxx wrote: > From: Lan Tianyu <Tianyu.Lan@xxxxxxxxxxxxx> > > For nested memory virtualization, Hyper-v doesn't set write-protect > L1 hypervisor EPT page directory and page table node to track changes > while it relies on guest to tell it changes via HvFlushGuestAddressLlist > hypercall. HvFlushGuestAddressLlist hypercall provides a way to flush > EPT page table with ranges which are specified by L1 hypervisor. > > If L1 hypervisor uses INVEPT or HvFlushGuestAddressSpace hypercall to > flush EPT tlb, Hyper-V will invalidate associated EPT shadow page table > and sync L1's EPT table when next EPT page fault is triggered. > HvFlushGuestAddressLlist hypercall helps to avoid such redundant EPT > page fault and synchronization of shadow page table. > > This patchset is based on the Patch "KVM/VMX: Check ept_pointer before > flushing ept tlb"(https://marc.info/?l=kvm&m=154408169705686&w=2). > > Change since v4: > 1) Split flush address and flush list patches. This patchset only contains > flush address patches. Will post flush list patches later. > 2) Expose function hyperv_fill_flush_guest_mapping_list() > out of hyperv file > 3) Adjust parameter of hyperv_flush_guest_mapping_range() > 4) Reorder patchset and move Hyper-V and VMX changes ahead. > > Change since v3: > 1) Remove code of updating "tlbs_dirty" in kvm_flush_remote_tlbs_with_range() > 2) Remove directly tlb flush in the kvm_handle_hva_range() > 3) Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() > 4) Combine Vitaly's "don't pass EPT configuration info to > vmx_hv_remote_flush_tlb()" fix > > Change since v2: > 1) Fix comment in the kvm_flush_remote_tlbs_with_range() > 2) Move HV_MAX_FLUSH_PAGES and HV_MAX_FLUSH_REP_COUNT to > hyperv-tlfs.h. > 3) Calculate HV_MAX_FLUSH_REP_COUNT in the macro definition > 4) Use HV_MAX_FLUSH_REP_COUNT to define length of gpa_list in > struct hv_guest_mapping_flush_list. > > Change since v1: > 1) Convert "end_gfn" of struct kvm_tlb_range to "pages" in order > to avoid confusion as to whether "end_gfn" is inclusive or exlusive. > 2) Add hyperv tlb range struct and replace kvm tlb range struct > with new struct in order to avoid using kvm struct in the hyperv > code directly. > > > > Lan Tianyu (10): > KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops > x86/hyper-v: Add HvFlushGuestAddressList hypercall support > x86/Hyper-v: Add trace in the > hyperv_nested_flush_guest_mapping_range() > KVM/VMX: Add hv tlb range flush support > KVM/MMU: Add tlb flush with range helper function > KVM: Replace old tlb flush function with new one to flush a specified > range. > KVM: Make kvm_set_spte_hva() return int > KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to > kvm_mmu_notifier_change_pte() > KVM/MMU: Flush tlb directly in the kvm_set_pte_rmapp() > KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range() > > arch/arm/include/asm/kvm_host.h | 2 +- > arch/arm64/include/asm/kvm_host.h | 2 +- > arch/mips/include/asm/kvm_host.h | 2 +- > arch/mips/kvm/mmu.c | 3 +- > arch/powerpc/include/asm/kvm_host.h | 2 +- > arch/powerpc/kvm/book3s.c | 3 +- > arch/powerpc/kvm/e500_mmu_host.c | 3 +- > arch/x86/hyperv/nested.c | 80 +++++++++++++++++++++++++++++++ > arch/x86/include/asm/hyperv-tlfs.h | 32 +++++++++++++ > arch/x86/include/asm/kvm_host.h | 9 +++- > arch/x86/include/asm/mshyperv.h | 15 ++++++ > arch/x86/include/asm/trace/hyperv.h | 14 ++++++ > arch/x86/kvm/mmu.c | 96 +++++++++++++++++++++++++++++-------- > arch/x86/kvm/paging_tmpl.h | 3 +- > arch/x86/kvm/vmx.c | 63 +++++++++++++++++------- > virt/kvm/arm/mmu.c | 6 ++- > virt/kvm/kvm_main.c | 5 +- > 17 files changed, 292 insertions(+), 48 deletions(-) > Queued, thanks. Paolo
