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hv: hyperv: Add hyperv page destory function #8760

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Merged
merged 1 commit into from
Mar 10, 2025
Merged

hv: hyperv: Add hyperv page destory function #8760

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11 changes: 11 additions & 0 deletions hypervisor/arch/x86/guest/hyperv.c
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Original file line number Diff line number Diff line change
Expand Up @@ -309,3 +309,14 @@ hyperv_init_vcpuid_entry(uint32_t leaf, uint32_t subleaf, uint32_t flags,
dev_dbg(DBG_LEVEL_HYPERV, "hv: %s: leaf=%x subleaf=%x flags=%x eax=%x ebx=%x ecx=%x edx=%x",
__func__, leaf, subleaf, flags, entry->eax, entry->ebx, entry->ecx, entry->edx);
}

void
hyperv_page_destory(struct acrn_vm *vm)
{
/* Reset the hypercall page */
vm->arch_vm.hyperv.hypercall_page.enabled = 0U;
/* Reset OS id */
vm->arch_vm.hyperv.guest_os_id.val64 = 0UL;
/* Reset the TSC page */
vm->arch_vm.hyperv.ref_tsc_page.enabled = 0UL;
}
4 changes: 4 additions & 0 deletions hypervisor/arch/x86/guest/vm.c
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Expand Up @@ -957,6 +957,10 @@ int32_t shutdown_vm(struct acrn_vm *vm)
offline_vcpu(vcpu);
}

#ifdef CONFIG_HYPERV_ENABLED
hyperv_page_destory(vm);
#endif

/* after guest_flags not used, then clear it */
vm_config = get_vm_config(vm->vm_id);
vm_config->guest_flags &= ~DM_OWNED_GUEST_FLAG_MASK;
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1 change: 1 addition & 0 deletions hypervisor/include/arch/x86/asm/guest/hyperv.h
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Expand Up @@ -64,4 +64,5 @@ int32_t hyperv_rdmsr(struct acrn_vcpu *vcpu, uint32_t msr, uint64_t *rval);
void hyperv_init_time(struct acrn_vm *vm);
void hyperv_init_vcpuid_entry(uint32_t leaf, uint32_t subleaf, uint32_t flags,
struct vcpuid_entry *entry);
void hyperv_page_destory(struct acrn_vm *vm);
#endif