On Tue, Jan 19, 2010 at 12:41:56PM +0100, Jan Kiszka wrote:
> Gleb Natapov wrote:
> > HYPER-V provides PV capabilities for its guests and most new MS Windows
> > detect and use them automatically. Older Windows guests need additional
> > drivers to uses PV. This patch series implements some PV capabilities
> > defined by HYPER-V spec for KVM. Windows guests running on KVM will be
> > able to take advantage of them.
> >
>
> This series generates warnings on 32-bit hosts. I'm currently busy with
> more critical problems, maybe you can already have a look.
>
This should fix it:
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 47c6e23..147bda7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3807,11 +3807,11 @@ 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) |
+ param = ((u64)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) |
+ ingpa = ((u64)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) |
+ outgpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
(kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffff);
}
#ifdef CONFIG_X86_64
--
Gleb.
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
