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authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 10:00:12 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-26 10:00:12 -0800
commitd94d14008efed91a6de5de03627e0cdadb32c588 (patch)
tree12296f25d9fbb03566ea3b38c443967b23fea1c8 /arch/x86/include
parent245137cdf0cd92077dad37868fe4859c90dada36 (diff)
parent2df8d3807ce7f75bb975f1aeae8fc6757527c62d (diff)
downloadlinux-d94d14008efed91a6de5de03627e0cdadb32c588.tar.gz
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more KVM updates from Paolo Bonzini: "x86: - take into account HVA before retrying on MMU notifier race - fixes for nested AMD guests without NPT - allow INVPCID in guest without PCID - disable PML in hardware when not in use - MMU code cleanups: * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits) KVM: SVM: Fix nested VM-Exit on #GP interception handling KVM: vmx/pmu: Fix dummy check if lbr_desc->event is created KVM: x86/mmu: Consider the hva in mmu_notifier retry KVM: x86/mmu: Skip mmu_notifier check when handling MMIO page fault KVM: Documentation: rectify rst markup in KVM_GET_SUPPORTED_HV_CPUID KVM: nSVM: prepare guest save area while is_guest_mode is true KVM: x86/mmu: Remove a variety of unnecessary exports KVM: x86: Fold "write-protect large" use case into generic write-protect KVM: x86/mmu: Don't set dirty bits when disabling dirty logging w/ PML KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging KVM: x86: Further clarify the logic and comments for toggling log dirty KVM: x86: Move MMU's PML logic to common code KVM: x86/mmu: Make dirty log size hook (PML) a value, not a function KVM: x86/mmu: Expand on the comment in kvm_vcpu_ad_need_write_protect() KVM: nVMX: Disable PML in hardware when running L2 KVM: x86/mmu: Consult max mapping level when zapping collapsible SPTEs KVM: x86/mmu: Pass the memslot to the rmap callbacks KVM: x86/mmu: Split out max mapping level calculation to helper KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages KVM: nVMX: no need to undo inject_page_fault change on nested vmexit ...
Diffstat (limited to 'arch/x86/include')
-rw-r--r--arch/x86/include/asm/kvm-x86-ops.h6
-rw-r--r--arch/x86/include/asm/kvm_host.h36
2 files changed, 8 insertions, 34 deletions
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index 355a2ab8fc09..323641097f63 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -93,11 +93,7 @@ KVM_X86_OP(check_intercept)
KVM_X86_OP(handle_exit_irqoff)
KVM_X86_OP_NULL(request_immediate_exit)
KVM_X86_OP(sched_in)
-KVM_X86_OP_NULL(slot_enable_log_dirty)
-KVM_X86_OP_NULL(slot_disable_log_dirty)
-KVM_X86_OP_NULL(flush_log_dirty)
-KVM_X86_OP_NULL(enable_log_dirty_pt_masked)
-KVM_X86_OP_NULL(cpu_dirty_log_size)
+KVM_X86_OP_NULL(update_cpu_dirty_logging)
KVM_X86_OP_NULL(pre_block)
KVM_X86_OP_NULL(post_block)
KVM_X86_OP_NULL(vcpu_blocking)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 84499aad01a4..0cf71ff2b2e5 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -89,6 +89,8 @@
KVM_ARCH_REQ_FLAGS(27, KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_APF_READY KVM_ARCH_REQ(28)
#define KVM_REQ_MSR_FILTER_CHANGED KVM_ARCH_REQ(29)
+#define KVM_REQ_UPDATE_CPU_DIRTY_LOGGING \
+ KVM_ARCH_REQ_FLAGS(30, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define CR0_RESERVED_BITS \
(~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
@@ -1007,6 +1009,7 @@ struct kvm_arch {
u32 bsp_vcpu_id;
u64 disabled_quirks;
+ int cpu_dirty_logging_count;
enum kvm_irqchip_mode irqchip_mode;
u8 nr_reserved_ioapic_pins;
@@ -1271,30 +1274,11 @@ struct kvm_x86_ops {
void (*sched_in)(struct kvm_vcpu *kvm, int cpu);
/*
- * Arch-specific dirty logging hooks. These hooks are only supposed to
- * be valid if the specific arch has hardware-accelerated dirty logging
- * mechanism. Currently only for PML on VMX.
- *
- * - slot_enable_log_dirty:
- * called when enabling log dirty mode for the slot.
- * - slot_disable_log_dirty:
- * called when disabling log dirty mode for the slot.
- * also called when slot is created with log dirty disabled.
- * - flush_log_dirty:
- * called before reporting dirty_bitmap to userspace.
- * - enable_log_dirty_pt_masked:
- * called when reenabling log dirty for the GFNs in the mask after
- * corresponding bits are cleared in slot->dirty_bitmap.
+ * Size of the CPU's dirty log buffer, i.e. VMX's PML buffer. A zero
+ * value indicates CPU dirty logging is unsupported or disabled.
*/
- void (*slot_enable_log_dirty)(struct kvm *kvm,
- struct kvm_memory_slot *slot);
- void (*slot_disable_log_dirty)(struct kvm *kvm,
- struct kvm_memory_slot *slot);
- void (*flush_log_dirty)(struct kvm *kvm);
- void (*enable_log_dirty_pt_masked)(struct kvm *kvm,
- struct kvm_memory_slot *slot,
- gfn_t offset, unsigned long mask);
- int (*cpu_dirty_log_size)(void);
+ int cpu_dirty_log_size;
+ void (*update_cpu_dirty_logging)(struct kvm_vcpu *vcpu);
/* pmu operations of sub-arch */
const struct kvm_pmu_ops *pmu_ops;
@@ -1437,11 +1421,6 @@ void kvm_mmu_slot_leaf_clear_dirty(struct kvm *kvm,
struct kvm_memory_slot *memslot);
void kvm_mmu_slot_largepage_remove_write_access(struct kvm *kvm,
struct kvm_memory_slot *memslot);
-void kvm_mmu_slot_set_dirty(struct kvm *kvm,
- struct kvm_memory_slot *memslot);
-void kvm_mmu_clear_dirty_pt_masked(struct kvm *kvm,
- struct kvm_memory_slot *slot,
- gfn_t gfn_offset, unsigned long mask);
void kvm_mmu_zap_all(struct kvm *kvm);
void kvm_mmu_invalidate_mmio_sptes(struct kvm *kvm, u64 gen);
unsigned long kvm_mmu_calculate_default_mmu_pages(struct kvm *kvm);
@@ -1613,7 +1592,6 @@ void kvm_inject_nmi(struct kvm_vcpu *vcpu);
void kvm_update_dr7(struct kvm_vcpu *vcpu);
int kvm_mmu_unprotect_page(struct kvm *kvm, gfn_t gfn);
-int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
int kvm_mmu_load(struct kvm_vcpu *vcpu);
void kvm_mmu_unload(struct kvm_vcpu *vcpu);