Patch adds HYP interface for global VM TLB invalidation without address parameter. Added ARM version of kvm_flush_remote_tlbs(), made the generic implementation a weak symbol.
Signed-off-by: Mario Smarduch <[email protected]> --- arch/arm/include/asm/kvm_asm.h | 1 + arch/arm/kvm/interrupts.S | 11 +++++++++++ arch/arm/kvm/mmu.c | 14 ++++++++++++++ virt/kvm/kvm_main.c | 2 +- 4 files changed, 27 insertions(+), 1 deletion(-) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 53b3c4a..21bc519 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -78,6 +78,7 @@ extern char __kvm_hyp_code_end[]; extern void __kvm_flush_vm_context(void); extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); +extern void __kvm_tlb_flush_vmid(struct kvm *kvm); extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu); #endif diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 0d68d40..bddc66b 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -66,6 +66,17 @@ ENTRY(__kvm_tlb_flush_vmid_ipa) bx lr ENDPROC(__kvm_tlb_flush_vmid_ipa) +/** + * void __kvm_tlb_flush_vmid(struct kvm *kvm) - Flush per-VMID TLBs + * + * Reuses __kvm_tlb_flush_vmid_ipa() for ARMv7, without passing address + * parameter + */ + +ENTRY(__kvm_tlb_flush_vmid) + b __kvm_tlb_flush_vmid_ipa +ENDPROC(__kvm_tlb_flush_vmid) + /******************************************************************** * Flush TLBs and instruction caches of all CPUs inside the inner-shareable * domain, for all VMIDs diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 2ac9588..ef29540 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -56,6 +56,20 @@ static void kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa) kvm_call_hyp(__kvm_tlb_flush_vmid_ipa, kvm, ipa); } +/** + * kvm_flush_remote_tlbs() - flush all VM TLB entries + * @kvm: pointer to kvm structure. + * + * Interface to HYP function to flush all VM TLB entries without address + * parameter. In HYP mode reuses __kvm_tlb_flush_vmid_ipa() function used by + * kvm_tlb_flush_vmid_ipa(). + */ +void kvm_flush_remote_tlbs(struct kvm *kvm) +{ + if (kvm) + kvm_call_hyp(__kvm_tlb_flush_vmid, kvm); +} + static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache *cache, int min, int max) { diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index fa70c6e..ba25765 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -184,7 +184,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req) return called; } -void kvm_flush_remote_tlbs(struct kvm *kvm) +void __weak kvm_flush_remote_tlbs(struct kvm *kvm) { long dirty_count = kvm->tlbs_dirty; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
