x86/kvm/VMX: drop bad asm() clobber from nested_vmx_check_vmentry_hw()

While upstream gcc doesn't detect conflicts on cc (yet), it really
should, and hence "cc" should not be specified for asm()-s also having
"=@cc<cond>" outputs. (It is quite pointless anyway to specify a "cc"
clobber in x86 inline assembly, since the compiler assumes it to be
always clobbered, and has no means [yet] to suppress this behavior.)

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Fixes: bbc0b8239257 ("KVM: nVMX: Capture VM-Fail via CC_{SET,OUT} in nested early checks")
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 1032f068f0b9cb8b144f92ee7e45124cb39bc924..0f705c7d590c458f7698ab4210ae8e9db10d9e0f 100644 (file)
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2781,7 +2781,7 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
                [launched]"i"(offsetof(struct loaded_vmcs, launched)),
                [host_state_rsp]"i"(offsetof(struct loaded_vmcs, host_state.rsp)),
                [wordsize]"i"(sizeof(ulong))
-             : "cc", "memory"
+             : "memory"
        );
 
        if (vmx->msr_autoload.host.nr)