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KVM: x86/pmu: Move "struct kvm_x86_pmu_event_filter" definition to pmu.c

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Move the definition of "struct kvm_x86_pmu_event_filter" to pmu.c, as the
as the details of the filters are very much implementation details that can
and should be buried in pmu.c.  While the _existence_ of filters is public
knowledge, almost by definition, the contents don't need to be exposed
outside of the PMU code as the filter data is provided by userspace, i.e.
it pretty much has to be dynamically allocated, and thus never should be
fully embedded in a globally visible structure.

No functional change intended

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Message-ID: <20260613000329.732085-20-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2026-06-12 17:03:18 -07:00 committed by Paolo Bonzini
parent 765ae5dc6f
commit 95ac6a63d2
3 changed files with 14 additions and 13 deletions
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13
arch/x86/include/asm/kvm_host.h
View File

@ -316,6 +316,7 @@ struct kvm_kernel_irqfd;
struct kvm_kernel_irq_routing_entry;
struct kvm_x86_msr_filter;
struct kvm_x86_pmu_event_filter;
struct kvm_caps {
/* control of guest tsc rate supported? */
@ -1322,18 +1323,6 @@ enum kvm_suppress_eoi_broadcast_mode {
KVM_SUPPRESS_EOI_BROADCAST_DISABLED /* Disable Suppress EOI broadcast */
};
struct kvm_x86_pmu_event_filter {
__u32 action;
__u32 nevents;
__u32 fixed_counter_bitmap;
__u32 flags;
__u32 nr_includes;
__u32 nr_excludes;
__u64 *includes;
__u64 *excludes;
__u64 events[] __counted_by(nevents);
};
enum kvm_apicv_inhibit {
/********************************************************************/

12
arch/x86/kvm/pmu.c
View File

@ -43,6 +43,18 @@ module_param(enable_pmu, bool, 0444);
bool __read_mostly enable_mediated_pmu;
EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_mediated_pmu);
struct kvm_x86_pmu_event_filter {
__u32 action;
__u32 nevents;
__u32 fixed_counter_bitmap;
__u32 flags;
__u32 nr_includes;
__u32 nr_excludes;
__u64 *includes;
__u64 *excludes;
__u64 events[] __counted_by(nevents);
};
struct kvm_pmu_emulated_event_selectors {
u64 INSTRUCTIONS_RETIRED;
u64 BRANCH_INSTRUCTIONS_RETIRED;

2
arch/x86/kvm/x86.c
View File

@ -9927,7 +9927,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
kvm_ioapic_destroy(kvm);
#endif
kvfree(rcu_dereference_check(kvm->arch.apic_map, 1));
kfree(srcu_dereference_check(kvm->arch.pmu_event_filter, &kvm->srcu, 1));
kfree((void * __force)kvm->arch.pmu_event_filter);
kvm_mmu_uninit_vm(kvm);
kvm_page_track_cleanup(kvm);
kvm_xen_destroy_vm(kvm);