2018-02-26 14:42-0800, Matthias Kaehlcke: > The type 'enum kvm_reg_ex' is an extension of 'enum kvm_reg', however > the extension is only semantical and the compiler doesn't know about the > relationship between the two types. In kvm_pdptr_read() a value of the > extended type is passed to kvm_x86_ops->cache_reg(), which expects a > value of the base type. Clang raises the following warning about the > type mismatch:
Yeah, expressing this in C type system seems impossible. > arch/x86/kvm/kvm_cache_regs.h:44:32: warning: implicit conversion from > enumeration type 'enum kvm_reg_ex' to different enumeration type > 'enum kvm_reg' [-Wenum-conversion] > kvm_x86_ops->cache_reg(vcpu, VCPU_EXREG_PDPTR); > > Cast VCPU_EXREG_PDPTR to 'enum kvm_reg' to make the compiler happy. > > Signed-off-by: Matthias Kaehlcke <m...@chromium.org> > --- Applied, thanks.
