On 20/07/2018 05:58, KY Srinivasan wrote: > > >> -----Original Message----- >> From: Tianyu Lan >> Sent: Thursday, July 19, 2018 1:40 AM >> Cc: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>; devel@xxxxxxxxxxxxxxxxxxxxxx; >> Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>; hpa@xxxxxxxxx; >> kvm@xxxxxxxxxxxxxxx; KY Srinivasan <kys@xxxxxxxxxxxxx>; linux- >> kernel@xxxxxxxxxxxxxxx; mingo@xxxxxxxxxx; pbonzini@xxxxxxxxxx; >> rkrcmar@xxxxxxxxxx; Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>; >> tglx@xxxxxxxxxxxxx; x86@xxxxxxxxxx; Michael Kelley (EOSG) >> <Michael.H.Kelley@xxxxxxxxxxxxx>; vkuznets@xxxxxxxxxx >> Subject: [PATCH V3 0/4] KVM/x86/hyper-V: Introduce PV guest address >> space mapping flush support >> >> Hyper-V provides a para-virtualization hypercall >> HvFlushGuestPhysicalAddressSpace >> to flush nested VM address space mapping in l1 hypervisor and it's to reduce >> overhead >> of flushing ept tlb among vcpus. The tradition way is to send IPIs to all >> affected >> vcpus and executes INVEPT on each vcpus. It will trigger several vmexits for >> IPI and >> INVEPT emulation. The pv hypercall can help to flush specified ept table on all >> vcpus >> via one single hypercall. >> >> Change since v2: >> - Make ept_pointers_match as tristate "check", "match" and "mismatch". >> Set "check" in vmx_set_cr3(), check all ept table pointers in >> hv_remote_flush_tlb() >> and call hypercall when all ept pointers are same. >> - Rename kvm_arch_hv_flush_remote_tlb with >> kvm_arch_flush_remote_tlb and >> Rename kvm_x86_ops->hv_tlb_remote_flush with kvm_x86_ops- >>> tlb_remote_flush >> - Fix issue that ignore updating tlbs_dirty during calling >> kvm_arch_flush_remote_tlbs() >> - Merge patch "KVM/VMX: Add identical ept table pointer check" and >> patch "KVM/x86: Add tlb_remote_flush callback support for vmx" >> >> Change since v1: >> - Fix compilation error for non-x86 platform. >> - Use ept_pointers_match to check condition of identical ept >> table pointer and get ept pointer from struct vcpu_vmx->ept_pointer. >> - Add hyperv_nested_flush_guest_mapping ftrace support >> >> >> >> Lan Tianyu (4): >> X86/Hyper-V: Add flush HvFlushGuestPhysicalAddressSpace hypercall >> support >> X86/Hyper-V: Add hyperv_nested_flush_guest_mapping ftrace support >> KVM: Add tlb remote flush callback in kvm_x86_ops. >> KVM/x86: Add tlb_remote_flush callback support for vmx >> >> arch/x86/hyperv/Makefile | 2 +- >> arch/x86/hyperv/nested.c | 67 >> ++++++++++++++++++++++++++++++++++ >> arch/x86/include/asm/hyperv-tlfs.h | 8 +++++ >> arch/x86/include/asm/kvm_host.h | 11 ++++++ >> arch/x86/include/asm/mshyperv.h | 2 ++ >> arch/x86/include/asm/trace/hyperv.h | 14 ++++++++ >> arch/x86/kvm/vmx.c | 72 >> ++++++++++++++++++++++++++++++++++++- >> include/linux/kvm_host.h | 7 ++++ >> virt/kvm/kvm_main.c | 3 +- >> 9 files changed, 183 insertions(+), 3 deletions(-) >> create mode 100644 arch/x86/hyperv/nested.c > > Acked-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx> Queued, thanks! Paolo _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
