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 <[email protected]> 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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
