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ANDROID: KVM: arm64: move kvm_shadow_destroy to pkvm.c for symmetry with create_el2_shadow

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Better to have the creation and teardown code in the same file to
understand what's happening. Simplifies subsequent patches.

Bug: 220830416
Signed-off-by: Fuad Tabba <tabba@google.com>
Change-Id: I07bc8a9e254753f000c4faffffcf52a0d8f3a831
This commit is contained in:
Fuad Tabba
2022-01-19 12:57:50 +00:00
committed by Quentin Perret
parent ab9f8c8200
commit aaf5614200
3 changed files with 25 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/include/asm/kvm_pkvm.h
View File

@@ -22,6 +22,7 @@
int kvm_arm_vm_ioctl_pkvm(struct kvm *kvm, struct kvm_enable_cap *cap);
int kvm_init_pvm(struct kvm *kvm, unsigned long type);
int create_el2_shadow(struct kvm *kvm);
void kvm_shadow_destroy(struct kvm *kvm);
/*
* Definitions for features to be allowed or restricted for guest virtual

25
arch/arm64/kvm/arm.c
View File

@@ -195,31 +195,6 @@ vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
return VM_FAULT_SIGBUS;
}
void free_hyp_memcache(struct kvm_hyp_memcache *mc);
static void kvm_shadow_destroy(struct kvm *kvm)
{
struct kvm_pinned_page *ppage, *tmp;
struct mm_struct *mm = current->mm;
struct list_head *ppages;
if (kvm->arch.pkvm.shadow_handle)
WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_shadow, kvm));
free_hyp_memcache(&kvm->arch.pkvm.teardown_mc);
ppages = &kvm->arch.pkvm.pinned_pages;
list_for_each_entry_safe(ppage, tmp, ppages, link) {
WARN_ON(kvm_call_hyp_nvhe(__pkvm_host_reclaim_page,
page_to_pfn(ppage->page)));
cond_resched();
account_locked_vm(mm, 1, false);
unpin_user_pages_dirty_lock(&ppage->page, 1, true);
list_del(&ppage->link);
kfree(ppage);
}
}
/**
* kvm_arch_destroy_vm - destroy the VM data structure
* @kvm: pointer to the KVM struct

24
arch/arm64/kvm/pkvm.c
View File

@@ -196,6 +196,30 @@ int create_el2_shadow(struct kvm *kvm)
return ret;
}
void kvm_shadow_destroy(struct kvm *kvm)
{
struct kvm_pinned_page *ppage, *tmp;
struct mm_struct *mm = current->mm;
struct list_head *ppages;
if (kvm->arch.pkvm.shadow_handle)
WARN_ON(kvm_call_hyp_nvhe(__pkvm_teardown_shadow, kvm));
free_hyp_memcache(&kvm->arch.pkvm.teardown_mc);
ppages = &kvm->arch.pkvm.pinned_pages;
list_for_each_entry_safe(ppage, tmp, ppages, link) {
WARN_ON(kvm_call_hyp_nvhe(__pkvm_host_reclaim_page,
page_to_pfn(ppage->page)));
cond_resched();
account_locked_vm(mm, 1, false);
unpin_user_pages_dirty_lock(&ppage->page, 1, true);
list_del(&ppage->link);
kfree(ppage);
}
}
static int __init pkvm_firmware_rmem_err(struct reserved_mem *rmem,
const char *reason)
{