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| author | Mario Smarduch <m.smarduch@samsung.com> | 2015-01-15 15:58:55 -0800 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2015-01-16 14:40:14 +0100 |
| commit | 72fc36b600f73e37557576af80c58836dcf389f9 (patch) | |
| tree | ce72702b0e0f5acdf3d21a242dc358f4fb09dd91 | |
| parent | e108ff2f8033a417ee3e517d9f8730f665646076 (diff) | |
| download | linux-72fc36b600f73e37557576af80c58836dcf389f9.tar.bz2 | |
KVM: arm: Add ARMv7 API to flush TLBs
This patch adds ARMv7 architecture TLB Flush function.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Mario Smarduch <m.smarduch@samsung.com>
| -rw-r--r-- | arch/arm/include/asm/kvm_asm.h | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 12 | ||||
| -rw-r--r-- | arch/arm/kvm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/kvm/interrupts.S | 11 |
4 files changed, 25 insertions, 0 deletions
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 |