From: Pekka Enberg <penberg@cs.helsinki.fi>
Date: Thu, 1 Apr 2010 13:35:38 +0000 (+0300)
Subject: kvm: Setup guest FPU state
X-Git-Tag: next-20110824~3^2~528^2~197
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a514525701dcc93fc8a9179bc8e0f74cc421f517;p=karo-tx-linux.git

kvm: Setup guest FPU state

Use the KVM_SET_FPU ioctl() to set up guest initial FPU state.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
---

diff --git a/tools/kvm/include/kvm/kvm.h b/tools/kvm/include/kvm/kvm.h
index 73d3c857871a..f20988ac3e3e 100644
--- a/tools/kvm/include/kvm/kvm.h
+++ b/tools/kvm/include/kvm/kvm.h
@@ -25,6 +25,7 @@ struct kvm {
 
 	struct kvm_regs		regs;
 	struct kvm_sregs	sregs;
+	struct kvm_fpu		fpu;
 
 	struct interrupt_table	interrupt_table;
 };
diff --git a/tools/kvm/kvm.c b/tools/kvm/kvm.c
index 5c0089caa533..6f43cd33171d 100644
--- a/tools/kvm/kvm.c
+++ b/tools/kvm/kvm.c
@@ -405,6 +405,14 @@ void kvm__reset_vcpu(struct kvm *self)
 	if (ioctl(self->vcpu_fd, KVM_SET_REGS, &self->regs) < 0)
 		die_perror("KVM_SET_REGS failed");
 
+	self->fpu = (struct kvm_fpu) {
+		.fcw		= 0x37f,
+		.mxcsr		= 0x1f80,
+	};
+
+	if (ioctl(self->vcpu_fd, KVM_SET_FPU, &self->fpu) < 0)
+		die_perror("KVM_SET_FPU failed");
+
 }
 
 void kvm__run(struct kvm *self)