diff options
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/interrupts.S | 9 | ||||
| -rw-r--r-- | arch/arm/kvm/mmu.c | 8 |
2 files changed, 10 insertions, 7 deletions
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index a8e0c2d..f7793df 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -35,15 +35,18 @@ __kvm_hyp_code_start: /******************************************************************** * Flush per-VMID TLBs * - * void __kvm_tlb_flush_vmid(struct kvm *kvm); + * void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); * * We rely on the hardware to broadcast the TLB invalidation to all CPUs * inside the inner-shareable domain (which is the case for all v7 * implementations). If we come across a non-IS SMP implementation, we'll * have to use an IPI based mechanism. Until then, we stick to the simple * hardware assisted version. + * + * As v7 does not support flushing per IPA, just nuke the whole TLB + * instead, ignoring the ipa value. */ -ENTRY(__kvm_tlb_flush_vmid) +ENTRY(__kvm_tlb_flush_vmid_ipa) push {r2, r3} add r0, r0, #KVM_VTTBR @@ -60,7 +63,7 @@ ENTRY(__kvm_tlb_flush_vmid) pop {r2, r3} bx lr -ENDPROC(__kvm_tlb_flush_vmid) +ENDPROC(__kvm_tlb_flush_vmid_ipa) /******************************************************************** * Flush TLBs and instruction caches of all CPUs inside the inner-shareable 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 @@ extern char __hyp_idmap_text_start[], __hyp_idmap_text_end[]; 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 @@ static int stage2_set_pte(struct kvm *kvm, struct kvm_mmu_memory_cache *cache, 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 handle_hva_to_gpa(struct kvm *kvm, 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) |