From: Mario Smarduch <m.smard...@samsung.com>
This patch adds support for arm64 hyp interface to flush all TLBs associated
with VMID.
Reviewed-by: Christoffer Dall <christoffer.d...@linaro.org>
Signed-off-by: Mario Smarduch <m.smard...@samsung.com>
---
arch/arm64/kvm/hyp.S | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S
index b72aa9f..6e1b5df 100644
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S
@@ -1030,6 +1030,28 @@ ENTRY(__kvm_tlb_flush_vmid_ipa)
ret
ENDPROC(__kvm_tlb_flush_vmid_ipa)
+/**
+ * void __kvm_tlb_flush_vmid(struct kvm *kvm) - Flush per-VMID TLBs
+ * @struct kvm *kvm - pointer to kvm structure
+ *
+ * Invalidates all Stage 1 and 2 TLB entries for current VMID.
+ */
+ENTRY(__kvm_tlb_flush_vmid)
+ dsb ishst
+
+ kern_hyp_va x0
+ ldr x2, [x0, #KVM_VTTBR]
+ msr vttbr_el2, x2
+ isb
+
+ tlbi vmalls12e1is
+ dsb ish
+ isb
+
+ msr vttbr_el2, xzr
+ ret
+ENDPROC(__kvm_tlb_flush_vmid)
+
ENTRY(__kvm_flush_vm_context)
dsb ishst
tlbi alle1is
--
1.9.1
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