From: David Daney <david.da...@cavium.com>
The current implementation does nothing with them, but future MIPSVZ
work need them. Also add the asm-offsets accessors for the fields.
Signed-off-by: David Daney <david.da...@cavium.com>
---
arch/mips/include/asm/kvm_host.h | 8 ++++++++
arch/mips/kernel/asm-offsets.c | 8 ++++++++
arch/mips/kvm/kvm_mips.c | 26 ++++++++++++++++++++++++--
3 files changed, 40 insertions(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h
index 16013c7..505b804 100644
--- a/arch/mips/include/asm/kvm_host.h
+++ b/arch/mips/include/asm/kvm_host.h
@@ -102,6 +102,14 @@ struct kvm_vcpu_arch {
unsigned long lo;
unsigned long epc;
+ /* FPU state */
+ u64 fpr[32];
+ u32 fir;
+ u32 fccr;
+ u32 fexr;
+ u32 fenr;
+ u32 fcsr;
+
void *impl;
};
diff --git a/arch/mips/kernel/asm-offsets.c b/arch/mips/kernel/asm-offsets.c
index 5a9222e..03bf363 100644
--- a/arch/mips/kernel/asm-offsets.c
+++ b/arch/mips/kernel/asm-offsets.c
@@ -377,6 +377,14 @@ void output_kvm_defines(void)
OFFSET(KVM_VCPU_ARCH_HI, kvm_vcpu, arch.hi);
OFFSET(KVM_VCPU_ARCH_EPC, kvm_vcpu, arch.epc);
OFFSET(KVM_VCPU_ARCH_IMPL, kvm_vcpu, arch.impl);
+ BLANK();
+ OFFSET(KVM_VCPU_ARCH_FPR, kvm_vcpu, arch.fpr);
+ OFFSET(KVM_VCPU_ARCH_FIR, kvm_vcpu, arch.fir);
+ OFFSET(KVM_VCPU_ARCH_FCCR, kvm_vcpu, arch.fccr);
+ OFFSET(KVM_VCPU_ARCH_FEXR, kvm_vcpu, arch.fexr);
+ OFFSET(KVM_VCPU_ARCH_FENR, kvm_vcpu, arch.fenr);
+ OFFSET(KVM_VCPU_ARCH_FCSR, kvm_vcpu, arch.fcsr);
+ BLANK();
OFFSET(KVM_MIPS_VCPU_TE_HOST_EBASE, kvm_mips_vcpu_te, host_ebase);
OFFSET(KVM_MIPS_VCPU_TE_GUEST_EBASE, kvm_mips_vcpu_te, guest_ebase);
diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c
index 041caad..18c8dc8 100644
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -465,12 +465,34 @@ int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
- return -ENOIOCTLCMD;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++)
+ fpu->fpr[i] = vcpu->arch.fpr[i];
+
+ fpu->fir = vcpu->arch.fir;
+ fpu->fccr = vcpu->arch.fccr;
+ fpu->fexr = vcpu->arch.fexr;
+ fpu->fenr = vcpu->arch.fenr;
+ fpu->fcsr = vcpu->arch.fcsr;
+
+ return 0;
}
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
- return -ENOIOCTLCMD;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vcpu->arch.fpr); i++)
+ vcpu->arch.fpr[i] = fpu->fpr[i];
+
+ vcpu->arch.fir = fpu->fir;
+ vcpu->arch.fccr = fpu->fccr;
+ vcpu->arch.fexr = fpu->fexr;
+ vcpu->arch.fenr = fpu->fenr;
+ vcpu->arch.fcsr = fpu->fcsr;
+
+ return 0;
}
int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
--
1.7.11.7
--
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