[PATCH V3 8/10] KVM: Add flush parameter for kvm_age_hva()

From: Lan Tianyu This patch is to add flush parameter for kvm_aga_hva() and move tlb flush from kvm_mmu_notifier_clear_flush_young() to kvm_age_hva(). kvm_age_hva() can check whether tlb flush is necessary when return value young is more than 0. Flush tlb if both conditions are met. Signed-off-b

[PATCH V3 7/10] KVM: Use tlb range flush in the kvm_vm_ioctl_get/clear_dirty_log()

From: Lan Tianyu This patch is to use tlb range flush to flush memslot's in the kvm_vm_ioctl_get/clear_dirty_log() instead of flushing tlbs of entire ept page table when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 8 +--- arch/x86/kvm/mmu.h | 7 +++ a

[PATCH V3 6/10] KVM: Add kvm_get_memslot() to get memslot via slot id

From: Lan Tianyu This patch is to add kvm_get_memslot() to get struct kvm_memory_slot via slot it and remove redundant codes. The function will also be used in the following changes. Signed-off-by: Lan Tianyu --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 45 ++

[PATCH V3 5/10] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect()

From: Lan Tianyu This patch is to flush tlb directly in the kvm_mmu_slot_gfn_write_protect() when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 5 + 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 7a862c56b954..60b1

[PATCH V3 4/10] KVM/MMU: Use range flush in sync_page()

From: Lan Tianyu This patch is to use range flush to flush tlbs of input struct kvm_mmu_page in the sync_page(). If range flush is not available, kvm_flush_remote_tlbs_with_address() will call kvm_flush_remote_tlbs(). Signed-off-by: Lan Tianyu --- arch/x86/kvm/paging_tmpl.h | 5 +++-- 1 file c

[PATCH V3 3/10] KVM/MMU: Introduce tlb flush with range list

From: Lan Tianyu This patch is to introduce tlb flush with range list interface and use struct kvm_mmu_page as list entry. Use flush list function in the kvm_mmu_commit_zap_page(). Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 24 +++- 1 file changed, 23 insertions(+),

[PATCH V3 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func()

From: Lan Tianyu Populate ranges on the flush list into struct hv_guest_mapping_flush_list when flush list is available in the struct kvm_tlb_range. Signed-off-by: Lan Tianyu --- Change since v2: - Fix calculation of flush pages in the kvm_fill_hv_flush_list_func() --- arch/x86/include

[PATCH V3 1/10] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list()

From: Lan Tianyu Add parameter offset to specify start position to add flush ranges in guest address list of struct hv_guest_mapping_flush_list. Signed-off-by: Lan Tianyu --- arch/x86/hyperv/nested.c| 4 ++-- arch/x86/include/asm/mshyperv.h | 2 +- arch/x86/kvm/vmx/vmx.c | 2 +

[PATCH V3 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM

From: Lan Tianyu This patchset is to introduce hv ept tlb range list flush function support in the KVM MMU component. Flushing ept tlbs of several address range can be done via single hypercall and new list flush function is used in the kvm_mmu_commit_zap_page() and FNAME(sync_page). This patchse

[PATCH V2 9/10] KVM: Add flush parameter for kvm_age_hva()

From: Lan Tianyu This patch is to add flush parameter for kvm_aga_hva() and move tlb flush from kvm_mmu_notifier_clear_flush_young() to kvm_age_hva(). kvm_age_hva() can check whether tlb flush is necessary when return value young is more than 0. Flush tlb if both conditions are met. Signed-off-b

[PATCH V2 8/10] KVM: Use tlb range flush in the kvm_vm_ioctl_get/clear_dirty_log()

From: Lan Tianyu This patch is to use tlb range flush to flush memslot's in the kvm_vm_ioctl_get/clear_dirty_log() instead of flushing tlbs of entire ept page table when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 8 +--- arch/x86/kvm/mmu.h | 7 +++ a

[PATCH V2 7/10] KVM: Add kvm_get_memslot() to get memslot via slot id

From: Lan Tianyu This patch is to add kvm_get_memslot() to get struct kvm_memory_slot via slot it and remove redundant codes. The function will also be used in the following changes. Signed-off-by: Lan Tianyu --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 45 ++

[PATCH V2 6/10] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect()

From: Lan Tianyu This patch is to flush tlb directly in the kvm_mmu_slot_gfn_write_protect() when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 5 + 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index d57574b49823..6b5e

[PATCH V2 5/10] KVM/MMU: Flush tlb with range list in sync_page()

From: Lan Tianyu This patch is to flush tlb via flush list function. Put page into flush list when return value of set_spte() includes flag SET_SPTE_NEED_REMOTE_TLB_FLUSH. kvm_flush_remote_ tlbs_with_list() checks whether the flush list is empty or not. It also checks whether range tlb flush is a

[PATCH V2 4/10] KVM/MMU: Introduce tlb flush with range list

From: Lan Tianyu This patch is to introduce tlb flush with range list interface and use struct kvm_mmu_page as list entry. Use flush list function in the kvm_mmu_commit_zap_page(). Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 25 - 1 file changed, 24 insertions(+)

[PATCH V2 3/10] KVM/MMU: Add last_level in the struct mmu_spte_page

From: Lan Tianyu This patch is to add last_level in the struct kvm_mmu_page. When build flush tlb range list, last_level will be used to identify whehter the page should be added into list. Signed-off-by: Lan Tianyu --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/mmu.c | 3

[PATCH V2 2/10] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func()

From: Lan Tianyu Populate ranges on the flush list into struct hv_guest_mapping_flush_list when flush list is available in the struct kvm_tlb_range. Signed-off-by: Lan Tianyu --- Change since v1: Make flush list as a "hlist" instead of a "list" in order to keep struct kvm_mmu_pag

[PATCH V2 1/10] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list()

From: Lan Tianyu Add parameter offset to specify start position to add flush ranges in guest address list of struct hv_guest_mapping_flush_list. Signed-off-by: Lan Tianyu --- arch/x86/hyperv/nested.c| 4 ++-- arch/x86/include/asm/mshyperv.h | 2 +- arch/x86/kvm/vmx/vmx.c | 2 +-

[PATCH V2 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM

From: Lan Tianyu This patchset is to introduce hv ept tlb range list flush function support in the KVM MMU component. Flushing ept tlbs of several address range can be done via single hypercall and new list flush function is used in the kvm_mmu_commit_zap_page() and FNAME(sync_page). This patchse

[PATCH V2 00/10] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM

From: Lan Tianyu This patchset is to introduce hv ept tlb range list flush function support in the KVM MMU component. Flushing ept tlbs of several address range can be done via single hypercall and new list flush function is used in the kvm_mmu_commit_zap_page() and FNAME(sync_page). This patchse

[PATCH 10/11] KVM: Add flush parameter for kvm_age_hva()

From: Lan Tianyu This patch is to add flush parameter for kvm_aga_hva() and inside code can check whether tlb flush is necessary when associated sptes are changed. The platform may just flush affected address tlbs instead of entire table's. Signed-off-by: Lan Tianyu --- arch/arm/include/asm/kv

[PATCH 9/11] KVM/MMU: Flush tlb in the kvm_mmu_write_protect_pt_masked()

From: Lan Tianyu This patch is to flush tlb in the kvm_mmu_write_protect_pt_masked() when tlb range flush is available and make kvm_mmu_write_protect_pt_masked() return flush request. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 25 ++--- 1 file changed, 18 insertions

[PATCH 8/11] KVM: Make kvm_arch_mmu_enable_log_dirty_pt_masked() return value

From: Lan Tianyu This patch is to make kvm_arch_mmu_enable_log_dirty_pt_masked() return value and caller can use it to determine whether tlb flush is necessary. kvm_get_dirty_log_protect() and kvm_clear_dirty_log_protect() use the return value of kvm_arch_mmu_enable_log_dirty_pt_masked() to popul

[PATCH 7/11] KVM: Remove redundant check in the kvm_get_dirty_log_protect()

From: Lan Tianyu The dirty bits have already been checked in the previous check of "dirty_bitmap" and mask must be non-zero value at this point. Signed-off-by: Lan Tianyu --- virt/kvm/kvm_main.c | 8 +++- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/virt/kvm/kvm_main.c b/v

[PATCH 6/11] KVM/MMU: Flush tlb with range list in sync_page()

From: Lan Tianyu This patch is to flush tlb via flush list function. Signed-off-by: Lan Tianyu --- arch/x86/kvm/paging_tmpl.h | 16 ++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 833e8855bbc9..866ccd

[PATCH 5/11] KVM/MMU: Flush tlb directly in the kvm_mmu_slot_gfn_write_protect()

From: Lan Tianyu This patch is to flush tlb directly in the kvm_mmu_slot_gfn_write_protect() when range flush is available. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 5 + 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index d3272c5066ea..6d4f

[PATCH 4/11] KVM/MMU: Introduce tlb flush with range list

From: Lan Tianyu This patch is to introduce tlb flush with range list interface and use struct kvm_mmu_page as list entry. Use flush list function in the kvm_mmu_commit_zap_page(). Signed-off-by: Lan Tianyu --- arch/x86/include/asm/kvm_host.h | 7 +++ arch/x86/kvm/mmu.c | 24

[PATCH 3/11] KVM: Add spte's point in the struct kvm_mmu_page

From: Lan Tianyu It's necessary to check whether mmu page is last or large page when add mmu page into flush list. "spte" is needed for such check and so add spte point in the struct kvm_mmu_page. Signed-off-by: Lan Tianyu --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/mmu.c

[PATCH 2/11] KVM/VMX: Fill range list in kvm_fill_hv_flush_list_func()

From: Lan Tianyu Populate ranges on the flush list into struct hv_guest_mapping_flush_list when flush list is available in the struct kvm_tlb_range. Signed-off-by: Lan Tianyu --- arch/x86/kvm/vmx/vmx.c | 18 -- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/arch

[PATCH 1/11] X86/Hyper-V: Add parameter offset for hyperv_fill_flush_guest_mapping_list()

From: Lan Tianyu Add parameter offset to specify start position to add flush ranges in guest address list of struct hv_guest_mapping_flush_list. Signed-off-by: Lan Tianyu --- arch/x86/hyperv/nested.c| 4 ++-- arch/x86/include/asm/mshyperv.h | 2 +- arch/x86/kvm/vmx/vmx.c | 2 +

[PATCH 00/11] X86/KVM/Hyper-V: Add HV ept tlb range list flush support in KVM

From: Lan Tianyu This patchset is to introduce hv ept tlb range list flush function support in the KVM MMU component. Flushing ept tlbs of several address range can be done via single hypercall and new list flush function is used in the kvm_mmu_commit_zap_page() and FNAME(sync_page). This patchse

[Resend PATCH V5 7/10] KVM: Make kvm_set_spte_hva() return int

From: Lan Tianyu The patch is to make kvm_set_spte_hva() return int and caller can check return value to determine flush tlb or not. Signed-off-by: Lan Tianyu --- arch/arm/include/asm/kvm_host.h | 2 +- arch/arm64/include/asm/kvm_host.h | 2 +- arch/mips/include/asm/kvm_host.h| 2 +-

[Resend PATCH V5 6/10] KVM: Replace old tlb flush function with new one to flush a specified range.

From: Lan Tianyu This patch is to replace kvm_flush_remote_tlbs() with kvm_flush_ remote_tlbs_with_address() in some functions without logic change. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 31 +-- arch/x86/kvm/paging_tmpl.h | 3 ++- 2 files chang

[Resend PATCH V5 5/10] KVM/MMU: Add tlb flush with range helper function

From: Lan Tianyu This patch is to add wrapper functions for tlb_remote_flush_with_range callback and flush tlb directly in kvm_mmu_zap_collapsible_spte(). kvm_mmu_zap_collapsible_spte() returns flush request to the slot_handle_leaf() and the latter does flush on demand. When range flush is availa

[Resend PATCH V5 4/10] KVM/VMX: Add hv tlb range flush support

From: Lan Tianyu This patch is to register tlb_remote_flush_with_range callback with hv tlb range flush interface. Signed-off-by: Lan Tianyu --- Change since v4: - Use new function kvm_fill_hv_flush_list_func() to fill flush request. Change since v3: - Merge Vitaly's don'

[Resend PATCH V5 3/10] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range()

From: Lan Tianyu This patch is to trace log in the hyperv_nested_flush_ guest_mapping_range(). Signed-off-by: Lan Tianyu --- arch/x86/hyperv/nested.c| 1 + arch/x86/include/asm/trace/hyperv.h | 14 ++ 2 files changed, 15 insertions(+) diff --git a/arch/x86/hyperv/nest

[Resend PATCH V5 2/10] x86/hyper-v: Add HvFlushGuestAddressList hypercall support

From: Lan Tianyu Hyper-V provides HvFlushGuestAddressList() hypercall to flush EPT tlb with specified ranges. This patch is to add the hypercall support. Reviewed-by: Michael Kelley Signed-off-by: Lan Tianyu --- Change sincd v4: - Expose function hyperv_fill_flush_guest_mapping_list()

[Resend PATCH V5 1/10] KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops

From: Lan Tianyu Add flush range call back in the kvm_x86_ops and platform can use it to register its associated function. The parameter "kvm_tlb_range" accepts a single range and flush list which contains a list of ranges. Signed-off-by: Lan Tianyu --- Change since v1: Change "end_gfn"

[Resend PATCH V5 0/10] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM

From: Lan Tianyu 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 flus

[Resend PATCH V5 7/10] KVM: Make kvm_set_spte_hva() return int

From: Lan Tianyu The patch is to make kvm_set_spte_hva() return int and caller can check return value to determine flush tlb or not. Signed-off-by: Lan Tianyu --- arch/arm/include/asm/kvm_host.h | 2 +- arch/arm64/include/asm/kvm_host.h | 2 +- arch/mips/include/asm/kvm_host.h| 2 +-

[Resend PATCH V5 6/10] KVM: Replace old tlb flush function with new one to flush a specified range.

From: Lan Tianyu This patch is to replace kvm_flush_remote_tlbs() with kvm_flush_ remote_tlbs_with_address() in some functions without logic change. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 31 +-- arch/x86/kvm/paging_tmpl.h | 3 ++- 2 files chang

[Resend PATCH V5 5/10] KVM/MMU: Add tlb flush with range helper function

From: Lan Tianyu This patch is to add wrapper functions for tlb_remote_flush_with_range callback and flush tlb directly in kvm_mmu_zap_collapsible_spte(). kvm_mmu_zap_collapsible_spte() returns flush request to the slot_handle_leaf() and the latter does flush on demand. When range flush is availa

[Resend PATCH V5 4/10] KVM/VMX: Add hv tlb range flush support

From: Lan Tianyu This patch is to register tlb_remote_flush_with_range callback with hv tlb range flush interface. Signed-off-by: Lan Tianyu --- Change since v4: - Use new function kvm_fill_hv_flush_list_func() to fill flush request. Change since v3: - Merge Vitaly's don'

[Resend PATCH V5 3/10] x86/Hyper-v: Add trace in the hyperv_nested_flush_guest_mapping_range()

From: Lan Tianyu This patch is to trace log in the hyperv_nested_flush_ guest_mapping_range(). Signed-off-by: Lan Tianyu --- arch/x86/hyperv/nested.c| 1 + arch/x86/include/asm/trace/hyperv.h | 14 ++ 2 files changed, 15 insertions(+) diff --git a/arch/x86/hyperv/nest

[Resend PATCH V5 2/10] x86/hyper-v: Add HvFlushGuestAddressList hypercall support

From: Lan Tianyu Hyper-V provides HvFlushGuestAddressList() hypercall to flush EPT tlb with specified ranges. This patch is to add the hypercall support. Reviewed-by: Michael Kelley Signed-off-by: Lan Tianyu --- Change sincd v4: - Expose function hyperv_fill_flush_guest_mapping_list()

[Resend PATCH V5 1/10] KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops

From: Lan Tianyu Add flush range call back in the kvm_x86_ops and platform can use it to register its associated function. The parameter "kvm_tlb_range" accepts a single range and flush list which contains a list of ranges. Signed-off-by: Lan Tianyu --- Change since v1: Change "end_gfn"

[PATCH V5 00/10] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM

From: Lan Tianyu Sorry. Some patches was blocked and I try to resend via another account. 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 HvFlushGuestAddress

[PATCH V4 4/15] KVM: Make kvm_set_spte_hva() return int

From: Lan Tianyu The patch is to make kvm_set_spte_hva() return int and caller can check return value to determine flush tlb or not. Signed-off-by: Lan Tianyu --- arch/arm/include/asm/kvm_host.h | 2 +- arch/arm64/include/asm/kvm_host.h | 2 +- arch/mips/include/asm/kvm_host.h| 2 +-

[PATCH V4 3/15] KVM: Replace old tlb flush function with new one to flush a specified range.

From: Lan Tianyu This patch is to replace kvm_flush_remote_tlbs() with kvm_flush_ remote_tlbs_with_address() in some functions without logic change. Signed-off-by: Lan Tianyu --- arch/x86/kvm/mmu.c | 31 +-- arch/x86/kvm/paging_tmpl.h | 3 ++- 2 files chang

[PATCH V4 2/15] KVM/MMU: Add tlb flush with range helper function

From: Lan Tianyu This patch is to add wrapper functions for tlb_remote_flush_with_range callback. Signed-off-by: Lan Tianyu --- Change sicne V3: Remove code of updating "tlbs_dirty" Change since V2: Fix comment in the kvm_flush_remote_tlbs_with_range() --- arch/x86/kvm/mmu.c | 40

[PATCH V4 1/15] KVM: Add tlb_remote_flush_with_range callback in kvm_x86_ops

From: Lan Tianyu Add flush range call back in the kvm_x86_ops and platform can use it to register its associated function. The parameter "kvm_tlb_range" accepts a single range and flush list which contains a list of ranges. Signed-off-by: Lan Tianyu --- Change since v1: Change "end_gfn"

[PATCH V4 00/15] x86/KVM/Hyper-v: Add HV ept tlb range flush hypercall support in KVM

From: Lan Tianyu 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 flus