[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 4/9] x86/hvm: provide stubs for HVM guest accessors
>>> On 07.08.18 at 12:00, <wei.liu2@xxxxxxxxxx> wrote: > --- a/xen/include/asm-x86/hvm/guest_access.h > +++ b/xen/include/asm-x86/hvm/guest_access.h > @@ -1,8 +1,32 @@ > #ifndef __ASM_X86_HVM_GUEST_ACCESS_H__ > #define __ASM_X86_HVM_GUEST_ACCESS_H__ > > +#if CONFIG_HVM > + > unsigned long copy_to_user_hvm(void *to, const void *from, unsigned len); > unsigned long clear_user_hvm(void *to, unsigned int len); > unsigned long copy_from_user_hvm(void *to, const void *from, unsigned len); > > +#else > + > +static inline > +unsigned long copy_to_user_hvm(void *to, const void *from, unsigned len) > +{ > + return len; > +} > + > +static inline > +unsigned long clear_user_hvm(void *to, unsigned int len) > +{ > + return len; > +} > + > +static inline > +unsigned long copy_from_user_hvm(void *to, const void *from, unsigned len) > +{ > + return len; > +} > + > +#endif With BUG() or at least ASSERT_UNREACHABLE() put into all of them Acked-by: Jan Beulich <jbeulich@xxxxxxxx> Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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