ARM: KVM: change kvm_tlb_flush_vmid to kvm_tlb_flush_vmid_ipa
v8 is capable of invalidating Stage-2 by IPA, but v7 is not.
Change kvm_tlb_flush_vmid() to take an IPA parameter, which is
then ignored by the invalidation code (and nuke the whole TLB
as it always did).
This allows v8 to implement a more optimized strategy.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c
index 692f064..0bf2c85 100644
--- a/arch/arm/kvm/mmu.c
+++ b/arch/arm/kvm/mmu.c
@@ -34,9 +34,9 @@
static DEFINE_MUTEX(kvm_hyp_pgd_mutex);
-static void kvm_tlb_flush_vmid(struct kvm *kvm)
+static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa)
{
- kvm_call_hyp(__kvm_tlb_flush_vmid, kvm);
+ kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, kvm, ipa);
}
static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache,
@@ -449,7 +449,7 @@
old_pte = *pte;
kvm_set_pte(pte, *new_pte);
if (pte_present(old_pte))
- kvm_tlb_flush_vmid(kvm);
+ kvm_tlb_flush_vmid_ipa(kvm, addr);
else
get_page(virt_to_page(pte));
@@ -666,7 +666,7 @@
static void kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, void *data)
{
unmap_stage2_range(kvm, gpa, PAGE_SIZE);
- kvm_tlb_flush_vmid(kvm);
+ kvm_tlb_flush_vmid_ipa(kvm, gpa);
}
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)