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8dc8feb53d
--Eliminate a big ifdef that encompassed all currently-supported architectures except mips and powerpc32. This applied to the case in which we've allocated a superpage but the pager-populated range is insufficient for a superpage mapping. For platforms that don't support superpages the check should be inexpensive as we shouldn't get a superpage in the first place. Make the normal-page fallback logic identical for all platforms and provide a simple implementation of pmap_ps_enabled() for MIPS and Book-E/AIM32 powerpc. --Apply the logic for handling pmap_enter() failure if a superpage mapping can't be supported due to additional protection policy. Use KERN_PROTECTION_FAILURE instead of KERN_FAILURE for this case, and note Intel PKU on amd64 as the first example of such protection policy. Reviewed by: kib, markj, bdragon Differential Revision: https://reviews.freebsd.org/D29439 |
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| .. | ||
| booke_machdep.c | ||
| locore.S | ||
| machdep_e500.c | ||
| mp_cpudep.c | ||
| platform_bare.c | ||
| pmap.c | ||
| pmap_32.c | ||
| pmap_64.c | ||
| spe.c | ||
| trap_subr.S | ||