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KVM: arm64: Implement kvm_arch_flush_remote_tlbs_range()

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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>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230811045127.3308641-12-rananta@google.com
This commit is contained in:
Raghavendra Rao Ananta 2023-08-11 04:51:24 +00:00 committed by Marc Zyngier
parent 117940aa6e
commit c42b6f0b1c
2 changed files with 10 additions and 0 deletions
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2
arch/arm64/include/asm/kvm_host.h
View File

@ -1115,6 +1115,8 @@ struct kvm *kvm_arch_alloc_vm(void);
#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS
#define __KVM_HAVE_ARCH_FLUSH_REMOTE_TLBS_RANGE
static inline bool kvm_vm_is_protected(struct kvm *kvm)
{
return false;

8
arch/arm64/kvm/mmu.c
View File

@ -172,6 +172,14 @@ int kvm_arch_flush_remote_tlbs(struct kvm *kvm)
return 0;
}
int kvm_arch_flush_remote_tlbs_range(struct kvm *kvm,
gfn_t gfn, u64 nr_pages)
{
kvm_tlb_flush_vmid_range(&kvm->arch.mmu,
gfn << PAGE_SHIFT, nr_pages << PAGE_SHIFT);
return 0;
}
static bool kvm_is_device_pfn(unsigned long pfn)
{
return !pfn_is_map_memory(pfn);