Makarand Sonare a85863c2ec KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging ... Currently, if enable_pml=1 PML remains enabled for the entire lifetime of the VM irrespective of whether dirty logging is enable or disabled. When dirty logging is disabled, all the pages of the VM are manually marked dirty, so that PML is effectively non-operational. Setting the dirty bits is an expensive operation which can cause severe MMU lock contention in a performance sensitive path when dirty logging is disabled after a failed or canceled live migration. Manually setting dirty bits also fails to prevent PML activity if some code path clears dirty bits, which can incur unnecessary VM-Exits. In order to avoid this extra overhead, dynamically enable/disable PML when dirty logging gets turned on/off for the first/last memslot. Signed-off-by: Makarand Sonare <makarandsonare@google.com> Co-developed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210213005015.1651772-12-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-02-19 03:08:34 -05:00
..
capabilities.h	KVM: vmx/pmu: Expose LBR_FMT in the MSR_IA32_PERF_CAPABILITIES	2021-02-04 05:27:26 -05:00
evmcs.c	KVM: x86: hyper-v: allow KVM_GET_SUPPORTED_HV_CPUID as a system ioctl	2020-11-15 09:49:11 -05:00
evmcs.h	KVM: VMX: eVMCS: make evmcs_sanitize_exec_ctrls() work again	2020-10-31 10:27:58 -04:00
nested.c	KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging	2021-02-19 03:08:34 -05:00
nested.h	KVM: nVMX: check for required but missing VMCS12 in KVM_SET_NESTED_STATE	2020-07-27 09:04:49 -04:00
pmu_intel.c	KVM: vmx/pmu: Release guest LBR event via lazy release mechanism	2021-02-04 05:27:26 -05:00
posted_intr.c	KVM: VMX: Use x2apic_mode to avoid RDMSR when querying PI state	2021-02-04 05:27:22 -05:00
posted_intr.h	KVM: vmx: rename pi_init to avoid conflict with paride	2020-10-24 04:09:54 -04:00
vmcs12.c	KVM: nVMX: Remove non-functional "support" for CR3 target values	2020-04-21 09:13:09 -04:00
vmcs12.h	KVM: nVMX: Remove non-functional "support" for CR3 target values	2020-04-21 09:13:09 -04:00
vmcs_shadow_fields.h	KVM: Fix some out-dated function names in comment	2020-01-21 13:57:27 +01:00
vmcs.h	KVM: VMX: Add a helper to test for a valid error code given an intr info	2020-09-28 07:57:50 -04:00
vmenter.S	KVM/nVMX: Use __vmx_vcpu_run in nested_vmx_check_vmentry_hw	2021-02-04 05:27:32 -05:00
vmx_ops.h	KVM: VMX: Rename ops.h to vmx_ops.h	2020-09-28 07:57:38 -04:00
vmx.c	KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging	2021-02-19 03:08:34 -05:00
vmx.h	KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging	2021-02-19 03:08:34 -05:00