On 21.02.22 15:18, Jan Beulich wrote:
On 21.02.2022 13:42, Juergen Gross wrote:Providing a macro for an invalid grant reference would be beneficial for users, especially as some are using the wrong value "0" for that purpose.Signed-off-by: Juergen Gross <jgr...@suse.com>Over the years I've been considering to add such to the public interface, perhaps even more than once. But I'm afraid it's not that easy. In principle 0xffffffff (which btw isn't necessarily ~0u) could
I can change that to use 0xffffffff explicitly.
be a valid ref. It is really internal agreement by users of the interface to set for themselves that they're not ever going to make a valid grant behind that reference.
As the grant reference is an index into the grant table this would limit the size of the grant table to "only" UINT_MAX - 1. I don't think this will be ever a concern (other than an academical one). Juergen
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