| From | Thomas Gleixner <> | Subject | Re: [PATCHv6 15/30] x86/boot: Port I/O: allow to hook up alternative helpers | Date | Thu, 17 Mar 2022 13:12:59 +0100 |
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On Wed, Mar 16 2022 at 05:08, Kirill A. Shutemov wrote: > +#undef inb > +#undef inw > +#undef inl > +#undef outb > +#undef outw > +#undef outl > + > +struct port_io_ops { > + u8 (*inb)(u16 port); > + u16 (*inw)(u16 port); > + u32 (*inl)(u16 port); > + void (*outb)(u8 v, u16 port); > + void (*outw)(u16 v, u16 port); > + void (*outl)(u32 v, u16 port);
u8 (*inb)(u16 port); void (*outb)(u8 v, u16 port); void (*outw)(u16 v, u16 port);
is all what's used AFAICT.
> +}; > + > +extern struct port_io_ops pio_ops; > + > +/* > + * Use the normal I/O instructions by default. > + * TDX guests override these to use hypercalls. > + */ > +static inline void init_default_io_ops(void) > +{ > + pio_ops.inb = __inb; > + pio_ops.inw = __inw; > + pio_ops.inl = __inl; > + pio_ops.outb = __outb; > + pio_ops.outw = __outw; > + pio_ops.outl = __outl; > +}
#define DEFINE_PORT_IO_OPS() \ struct port_io_ops pio_ops = { \ .inb = __inb, \ .outb = __outb, \ .outw = __outw, }
Hmm?
Thanks,
tglx
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