From: Dave Martin <[email protected]> This patch adds a kvm_arm_init_arch_resources() hook to perform subarch-specific initialisation when starting up KVM.
This will be used in a subsequent patch for global SVE-related setup on arm64. No functional change. Signed-off-by: Dave Martin <[email protected]> Reviewed-by: Julien Thierry <[email protected]> Tested-by: zhang.lei <[email protected]> Signed-off-by: Marc Zyngier <[email protected]> --- arch/arm/include/asm/kvm_host.h | 2 ++ arch/arm64/include/asm/kvm_host.h | 2 ++ virt/kvm/arm/arm.c | 4 ++++ 3 files changed, 8 insertions(+) diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 770d73257ad9..a49ee01242ff 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -53,6 +53,8 @@ DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use); +static inline int kvm_arm_init_arch_resources(void) { return 0; } + u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode); int __attribute_const__ kvm_target_cpu(void); int kvm_reset_vcpu(struct kvm_vcpu *vcpu); diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 205438a108f6..3e8950942591 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -58,6 +58,8 @@ DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use); +static inline int kvm_arm_init_arch_resources(void) { return 0; } + int __attribute_const__ kvm_target_cpu(void); int kvm_reset_vcpu(struct kvm_vcpu *vcpu); int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext); diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 99c37384ba7b..c69e1370a5dc 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -1664,6 +1664,10 @@ int kvm_arch_init(void *opaque) if (err) return err; + err = kvm_arm_init_arch_resources(); + if (err) + return err; + if (!in_hyp_mode) { err = init_hyp_mode(); if (err) -- 2.20.1 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
