KVM: arm64: Enable mapping guest_memfd in arm64
Enable mapping guest_memfd in arm64. For now, it applies to all
VMs in arm64 that use guest_memfd. In the future, new VM types
can restrict this via kvm_arch_gmem_supports_shared_mem().
Change-Id: I9625505d142e2d14b6a439c3de6111a45938ea98
Signed-off-by: Fuad Tabba <tabba@google.com>
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 3a7ec98..e722a99 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -1543,4 +1543,14 @@ void kvm_set_vm_id_reg(struct kvm *kvm, u32 reg, u64 val);
#define kvm_has_s1poe(k) \
(kvm_has_feat((k), ID_AA64MMFR3_EL1, S1POE, IMP))
+static inline bool kvm_arch_has_private_mem(struct kvm *kvm)
+{
+ return IS_ENABLED(CONFIG_KVM_PRIVATE_MEM);
+}
+
+static inline bool kvm_arch_gmem_supports_shared_mem(struct kvm *kvm)
+{
+ return IS_ENABLED(CONFIG_KVM_GMEM_SHARED_MEM);
+}
+
#endif /* __ARM64_KVM_HOST_H__ */
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index ead632a..4830d88 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -38,6 +38,7 @@
select HAVE_KVM_VCPU_RUN_PID_CHANGE
select SCHED_INFO
select GUEST_PERF_EVENTS if PERF_EVENTS
+ select KVM_GMEM_SHARED_MEM
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