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linux-stable/arch/x86/kvm
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David Matlack 3d30bfcbdc KVM: x86/mmu: Stop kicking vCPUs to sync the dirty log when PML is disabled 
Stop kicking vCPUs in kvm_arch_sync_dirty_log() when PML is disabled.
Kicking vCPUs when PML is disabled serves no purpose and could
negatively impact guest performance.

This restores KVM's behavior to prior to 5.12 commit a018eba538 ("KVM:
x86: Move MMU's PML logic to common code"), which replaced a
static_call_cond(kvm_x86_flush_log_dirty) with unconditional calls to
kvm_vcpu_kick().

Fixes: a018eba538 ("KVM: x86: Move MMU's PML logic to common code")
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20231016221228.1348318-1-dmatlack@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2023-10-17 13:54:52 -07:00
..
mmu KVM: x86/mmu: Stop zapping invalidated TDP MMU roots asynchronously 2023-09-23 05:35:48 -04:00
svm KVM: x86: Use octal for file permission 2023-10-17 10:29:10 -07:00
vmx KVM: x86: Use octal for file permission 2023-10-17 10:29:10 -07:00
.gitignore KVM: x86: use a separate asm-offsets.c file 2022-11-09 12:10:17 -05:00
cpuid.c KVM: x86: Add SBPB support 2023-10-04 15:19:32 -07:00
cpuid.h KVM: x86: Add SBPB support 2023-10-04 15:19:32 -07:00
debugfs.c KVM: x86: Unify pr_fmt to use module name for all KVM modules 2022-12-29 15:47:35 -05:00
emulate.c KVM: x86: Remove break statements that will never be executed 2023-08-17 11:28:00 -07:00
fpu.h KVM: x86: Move FPU register accessors into fpu.h 2021-06-17 13:09:24 -04:00
governed_features.h KVM: nSVM: Use KVM-governed feature framework to track "vNMI enabled" 2023-08-17 11:43:31 -07:00
hyperv.c KVM: x86: Remove break statements that will never be executed 2023-08-17 11:28:00 -07:00
hyperv.h KVM: x86: Hyper-V invariant TSC control 2022-12-29 15:33:29 -05:00
i8254.c KVM: x86: Unify pr_fmt to use module name for all KVM modules 2022-12-29 15:47:35 -05:00
i8254.h KVM: x86: PIT: Preserve state of speaker port data bit 2022-06-08 13:06:20 -04:00
i8259.c KVM: x86: Fix poll command 2023-06-01 13:44:13 -07:00
ioapic.c KVM: x86/ioapic: Resample the pending state of an IRQ when unmasking 2023-03-27 10:13:28 -04:00
ioapic.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
irq.c KVM: x86: Unify pr_fmt to use module name for all KVM modules 2022-12-29 15:47:35 -05:00
irq.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
irq_comm.c KVM: x86: Unify pr_fmt to use module name for all KVM modules 2022-12-29 15:47:35 -05:00
Kconfig KVM: x86: Add CONFIG_KVM_MAX_NR_VCPUS to allow up to 4096 vCPUs 2023-09-28 09:25:19 -07:00
kvm-asm-offsets.c KVM: SVM: move MSR_IA32_SPEC_CTRL save/restore to assembly 2022-11-09 12:25:53 -05:00
kvm_cache_regs.h KVM: x86: Add helpers to query individual CR0/CR4 bits 2023-03-22 10:10:53 -07:00
kvm_emulate.h KVM: x86: Remove x86_emulate_ops::guest_has_long_mode 2023-08-02 15:47:27 -07:00
kvm_onhyperv.c KVM: x86/mmu: Move filling of Hyper-V's TLB range struct into Hyper-V code 2023-04-10 15:17:29 -07:00
kvm_onhyperv.h s390: 2023-05-01 12:06:20 -07:00
lapic.c KVM x86 changes for 6.6: 2023-08-31 13:36:33 -04:00
lapic.h KVM: x86: Split out logic to generate "readable" APIC regs mask to helper 2023-01-24 10:04:35 -08:00
Makefile KVM: x86: Introduce .hv_inject_synthetic_vmexit_post_tlb_flush() nested hook 2022-11-18 12:59:13 -05:00
mmu.h KVM: x86/mmu: Don't bounce through page-track mechanism for guest PTEs 2023-08-31 13:49:00 -04:00
mtrr.c KVM: x86: Make kvm_mtrr_valid() static now that there are no external users 2023-06-01 13:41:06 -07:00
pmu.c KVM: x86/pmu: Move .hw_event_available() check out of PMC filter helper 2023-08-02 16:44:36 -07:00
pmu.h KVM: x86/pmu: Disable vPMU if the minimum num of counters isn't met 2023-06-06 17:31:44 -07:00
reverse_cpuid.h KVM: x86: Advertise AMX-COMPLEX CPUID to userspace 2023-08-03 15:40:17 -07:00
smm.c KVM: x86: Remove redundant vcpu->arch.cr0 assignments 2023-09-27 12:57:48 -07:00
smm.h KVM: x86: smm: preserve interrupt shadow in SMRAM 2022-11-09 12:31:26 -05:00
trace.h KVM: x86/xen: Add CPL to Xen hypercall tracepoint 2022-11-28 13:31:01 -05:00
tss.h
x86.c KVM: x86/mmu: Stop kicking vCPUs to sync the dirty log when PML is disabled 2023-10-17 13:54:52 -07:00
x86.h KVM: x86: Refine calculation of guest wall clock to use a single TSC read 2023-10-05 19:36:16 -07:00
xen.c KVM: x86: Refine calculation of guest wall clock to use a single TSC read 2023-10-05 19:36:16 -07:00
xen.h KVM: x86/xen: update Xen CPUID Leaf 4 (tsc info) sub-leaves, if present 2023-01-24 10:05:20 -08:00