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| author | Mario Smarduch <m.smarduch@samsung.com> | 2015-01-15 15:59:00 -0800 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2015-01-16 14:42:49 +0100 |
| commit | 9836c6b9fff8cbc43e8bb0098e901fe84ceb0810 (patch) | |
| tree | c9ce2380a6f64a9a4b5b5c69c89800eab8557f78 /arch/arm64 | |
| parent | 8199ed0e7c28ece79674a9fbba3208e93395a646 (diff) | |
| download | linux-9836c6b9fff8cbc43e8bb0098e901fe84ceb0810.tar.gz | |
KVM: arm64: Add HYP interface to flush VM Stage 1/2 TLB entries
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>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kvm/hyp.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S index fbe909fb0a1a..d9c43447eb04 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 |