Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v2 1/1] powerpc/iommu: Enable remaining IOMMU Pagesizes present in LoPAR | Date | Thu, 08 Apr 2021 19:08:22 +1000 |
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Leonardo Bras <leobras.c@gmail.com> writes: > On Thu, 2021-04-08 at 03:20 -0300, Leonardo Bras wrote: >> > > +#define QUERY_DDW_PGSIZE_4K 0x01 >> > > +#define QUERY_DDW_PGSIZE_64K 0x02 >> > > +#define QUERY_DDW_PGSIZE_16M 0x04 >> > > +#define QUERY_DDW_PGSIZE_32M 0x08 >> > > +#define QUERY_DDW_PGSIZE_64M 0x10 >> > > +#define QUERY_DDW_PGSIZE_128M 0x20 >> > > +#define QUERY_DDW_PGSIZE_256M 0x40 >> > > +#define QUERY_DDW_PGSIZE_16G 0x80 >> > >> > I'm not sure the #defines really gain us much vs just putting the >> > literal values in the array below? >> >> My v1 did not use the define approach, what do you think of that? >> http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20210322190943.715368-1-leobras.c@gmail.com/ >> >> > (of course, it would be that without the pageshift defines also, using > the __builtin_ctz() approach suggested by Alexey.)
Yeah I think I like that better.
cheers
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