diff mbox

[PATCHv3,0/4] Add support for some HYPER-V PV features

Message ID 20100119130638.GO14345@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Gleb Natapov Jan. 19, 2010, 1:06 p.m. UTC 
None
diff mbox

Patch

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 47c6e23..a311751 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3807,12 +3807,12 @@  int kvm_hv_hypercall(struct kvm_vcpu *vcpu)
 	longmode = is_long_mode(vcpu) && cs_l == 1;
 
 	if (!longmode) {
-		param = (kvm_register_read(vcpu, VCPU_REGS_RDX) << 32) |
-			(kvm_register_read(vcpu, VCPU_REGS_RAX) & 0xffffff);
-		ingpa = (kvm_register_read(vcpu, VCPU_REGS_RBX) << 32) |
-			(kvm_register_read(vcpu, VCPU_REGS_RCX) & 0xffffff);
-		outgpa = (kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
-			(kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffff);
+		param = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDX) << 32) |
+			(kvm_register_read(vcpu, VCPU_REGS_RAX) & 0xffffffff);
+		ingpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RBX) << 32) |
+			(kvm_register_read(vcpu, VCPU_REGS_RCX) & 0xffffffff);
+		outgpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
+			(kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffffff);
 	}
 #ifdef CONFIG_X86_64
 	else {