From 72fc36b600f73e37557576af80c58836dcf389f9 Mon Sep 17 00:00:00 2001 From: Mario Smarduch Date: Thu, 15 Jan 2015 15:58:55 -0800 Subject: [PATCH] KVM: arm: Add ARMv7 API to flush TLBs This patch adds ARMv7 architecture TLB Flush function. Acked-by: Marc Zyngier Acked-by: Christoffer Dall Signed-off-by: Mario Smarduch --- arch/arm/include/asm/kvm_asm.h | 1 + arch/arm/include/asm/kvm_host.h | 12 ++++++++++++ arch/arm/kvm/Kconfig | 1 + arch/arm/kvm/interrupts.S | 11 +++++++++++ 4 files changed, 25 insertions(+) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 3a67bec72d0c..25410b2d8bc1 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -96,6 +96,7 @@ 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/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 254e0650e48b..acfced36986b 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -221,6 +221,18 @@ static inline void __cpu_init_hyp_mode(phys_addr_t boot_pgd_ptr, kvm_call_hyp((void*)hyp_stack_ptr, vector_ptr, pgd_ptr); } +/** + * 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. + */ +static inline void kvm_flush_remote_tlbs(struct kvm *kvm) +{ + kvm_call_hyp(__kvm_tlb_flush_vmid, kvm); +} + static inline int kvm_arch_dev_ioctl_check_extension(long ext) { return 0; diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index 466bd299b1a8..f27f3360e52b 100644 --- a/arch/arm/kvm/Kconfig +++ b/arch/arm/kvm/Kconfig @@ -21,6 +21,7 @@ config KVM select PREEMPT_NOTIFIERS select ANON_INODES select HAVE_KVM_CPU_RELAX_INTERCEPT + select HAVE_KVM_ARCH_TLB_FLUSH_ALL select KVM_MMIO select KVM_ARM_HOST depends on ARM_VIRT_EXT && ARM_LPAE diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 01dcb0e752d9..79caf79b304a 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 -- 2.39.5