From: Mario Smarduch <m.smarduch@samsung.com>
To: kvm-ia64@vger.kernel.org
Subject: [PATCH v16 09/10] KVM: arm64: Add HYP interface to flush VM Stage 1/2 TLB entries
Date: Thu, 15 Jan 2015 23:59:00 +0000 [thread overview]
Message-ID: <1421366341-26012-10-git-send-email-m.smarduch@samsung.com> (raw)
This patch adds support for arm64 hyp interface to flush all TLBs associated
with VMID.
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Mario Smarduch <m.smarduch@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
--
1.7.9.5
reply other threads:[~2015-01-15 23:59 UTC|newest]
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