Define the required kvm_vcpu_arch fields, and offsets to manage VFP state. And declary Hyp interface function to switch VFP registers.
Signed-off-by: Mario Smarduch <[email protected]> --- arch/arm/include/asm/kvm_asm.h | 1 + arch/arm/include/asm/kvm_host.h | 3 +++ arch/arm/kernel/asm-offsets.c | 1 + 3 files changed, 5 insertions(+) diff --git a/arch/arm/include/asm/kvm_asm.h b/arch/arm/include/asm/kvm_asm.h index 25410b2..08dda8c 100644 --- a/arch/arm/include/asm/kvm_asm.h +++ b/arch/arm/include/asm/kvm_asm.h @@ -97,6 +97,7 @@ extern char __kvm_hyp_code_end[]; extern void __kvm_flush_vm_context(void); extern void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa); extern void __kvm_tlb_flush_vmid(struct kvm *kvm); +extern void __kvm_restore_host_vfp_state(struct kvm_vcpu *vcpu); extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu); #endif diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index d71607c..22cea72 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -111,6 +111,9 @@ struct kvm_vcpu_arch { /* Interrupt related fields */ u32 irq_lines; /* IRQ and FIQ levels */ + /* Track if VFP registers are occupied by Guest while in KVM host mode*/ + u32 vfp_guest_saved; + /* Exception Information */ struct kvm_vcpu_fault_info fault; diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 871b826..35093d0 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -191,6 +191,7 @@ int main(void) DEFINE(VCPU_HPFAR, offsetof(struct kvm_vcpu, arch.fault.hpfar)); DEFINE(VCPU_HYP_PC, offsetof(struct kvm_vcpu, arch.fault.hyp_pc)); DEFINE(VCPU_VGIC_CPU, offsetof(struct kvm_vcpu, arch.vgic_cpu)); + DEFINE(VCPU_VFP_SAVED, offsetof(struct kvm_vcpu, arch.vfp_guest_saved)); DEFINE(VGIC_V2_CPU_HCR, offsetof(struct vgic_cpu, vgic_v2.vgic_hcr)); DEFINE(VGIC_V2_CPU_VMCR, offsetof(struct vgic_cpu, vgic_v2.vgic_vmcr)); DEFINE(VGIC_V2_CPU_MISR, offsetof(struct vgic_cpu, vgic_v2.vgic_misr)); -- 1.7.9.5 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
