Re: [Xen-devel] [PATCH V2] tools/libxc, xen/x86: Added xc_set_mem_access_multi()

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 09/02/2016 01:02 PM, Jan Beulich wrote:
>> +    /*
>> > +     * Corresponding list of access settings for pfn_list
>> > +     * Used only with XENMEM_access_op_set_access_multi
>> > +     */
>> > +    XEN_GUEST_HANDLE(uint8) access_list;
> And for both of them - I don't think the arrays are meant to be
> used for output? In which case they should be handles of const
> types.

Actually I can't seem to be able to find a magic combination that works.

XEN_GUEST_HANDLE(const uint8) access_list; tells me:

./public/arch-x86/xen.h:53:41: error: '__guest_handle_const' does not
name a type
 #define __XEN_GUEST_HANDLE(name)        __guest_handle_ ## name

which is fair. I've tried:

XEN_GUEST_HANDLE(const_uint8) access_list;

which does go further with the compilation process, but still kills it with:

xen/include/compat/memory.h:154:5: error: unknown type name
'__compat_handle_const_uint8'
     COMPAT_HANDLE(const_uint8) access_list;

What would be the appropriate const type to use here?


Thanks,
Razvan

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