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Commit 4a6fee80 authored by Anup Patel's avatar Anup Patel Committed by Christoffer Dall
Browse files

ARM: KVM: Implement kvm_vcpu_preferred_target() function 



This patch implements kvm_vcpu_preferred_target() function for
KVM ARM which will help us implement KVM_ARM_PREFERRED_TARGET ioctl
for user space.

Signed-off-by: default avatarAnup Patel <anup.patel@linaro.org>
Signed-off-by: default avatarPranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent b373e492

arch/arm/include/asm/kvm_host.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -154,6 +154,7 @@ struct kvm_vcpu_stat { 
struct kvm_vcpu_init;

struct kvm_vcpu_init;

int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,

int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,

			const struct kvm_vcpu_init *init);

			const struct kvm_vcpu_init *init);

int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init);

unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);

unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);

int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);

int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);

struct kvm_one_reg;

struct kvm_one_reg;

arch/arm/kvm/guest.c

+20 −0
Original line number Original line Diff line number Diff line
@@ -222,6 +222,26 @@ int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, 
	return kvm_reset_vcpu(vcpu);

	return kvm_reset_vcpu(vcpu);

}

}





int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)

{

	int target = kvm_target_cpu();



	if (target < 0)

		return -ENODEV;



	memset(init, 0, sizeof(*init));



	/*

	 * For now, we don't return any features.

	 * In future, we might use features to return target

	 * specific features available for the preferred

	 * target type.

	 */

	init->target = (__u32)target;



	return 0;

}



int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)

int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)

{

{

	return -EINVAL;

	return -EINVAL;