x86: xen: remove the use of VLAIS

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Variable Length Arrays In Structs (VLAIS) is not supported by Clang, and
frowned upon by others.

https://lkml.org/lkml/2013/9/23/500

Here, the VLAIS was used because the size of the bitmap returned from
xen_mc_entry() depended on possibly (based on kernel configuration)
runtime sized data. Rather than declaring args as a VLAIS then calling
sizeof on *args, we calculate the appropriate sizeof args manually.
Further, we can get rid of the #ifdef's and rely on num_possible_cpus()
(thanks to a helpful checkpatch warning from an earlier version of this
patch).

Suggested-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

...

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Nick Desaulniers 2018-01-06 13:39:48 -08:00 • committed by Boris Ostrovsky

parent 0dd6d272d3

commit 66a640e782

1 changed files with 3 additions and 5 deletions

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arch/x86/xen/mmu_pv.c

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