| Message ID | 20230715005405.3689586-9-rananta@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: arm64: Add support for FEAT_TLBIRANGE | expand |
On 7/15/23 08:54, Raghavendra Rao Ananta wrote: > Implement kvm_arch_flush_remote_tlbs_range() for arm64 > to invalidate the given range in the TLB. > > Signed-off-by: Raghavendra Rao Ananta <rananta@google.com> > Reviewed-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Shaoqin Huang <shahuang@redhat.com> > --- > arch/arm64/include/asm/kvm_host.h | 3 +++ > arch/arm64/kvm/mmu.c | 7 +++++++ > 2 files changed, 10 insertions(+) > > diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h > index 7281222f24ef..52d3ed918893 100644 > --- a/arch/arm64/include/asm/kvm_host.h > +++ b/arch/arm64/include/asm/kvm_host.h > @@ -1114,6 +1114,9 @@ struct kvm *kvm_arch_alloc_vm(void); > #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS > int kvm_arch_flush_remote_tlbs(struct kvm *kvm); > > +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE > +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages); > + > static inline bool kvm_vm_is_protected(struct kvm *kvm) > { > return false; > diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c > index 0ac721fa27f1..387f2215fde7 100644 > --- a/arch/arm64/kvm/mmu.c > +++ b/arch/arm64/kvm/mmu.c > @@ -172,6 +172,13 @@ int kvm_arch_flush_remote_tlbs(struct kvm *kvm) > return 0; > } > > +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages) > +{ > + kvm_tlb_flush_vmid_range(&kvm->arch.mmu, > + start_gfn << PAGE_SHIFT, pages << PAGE_SHIFT); > + return 0; > +} > + > static bool kvm_is_device_pfn(unsigned long pfn) > { > return !pfn_is_map_memory(pfn);
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 7281222f24ef..52d3ed918893 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -1114,6 +1114,9 @@ struct kvm *kvm_arch_alloc_vm(void); #define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS int kvm_arch_flush_remote_tlbs(struct kvm *kvm); +#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages); + static inline bool kvm_vm_is_protected(struct kvm *kvm) { return false; diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 0ac721fa27f1..387f2215fde7 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -172,6 +172,13 @@ int kvm_arch_flush_remote_tlbs(struct kvm *kvm) return 0; } +int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm, gfn_t start_gfn, u64 pages) +{ + kvm_tlb_flush_vmid_range(&kvm->arch.mmu, + start_gfn << PAGE_SHIFT, pages << PAGE_SHIFT); + return 0; +} + static bool kvm_is_device_pfn(unsigned long pfn) { return !pfn_is_map_memory(pfn);