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Fix I/O coherence issues on ThunderX when SMP is disabled

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To maintain coherence between cache and DMA memory appropriate
shareability flags need to be set in the PTE regardless of SMP
option.

Reviewed by:	wma
Obtained from:	Semihalf
Sponsored by:	Cavium
Differential Revision: https://reviews.freebsd.org/D6231
This commit is contained in:
Zbigniew Bodek 2016-05-11 13:23:56 +00:00
parent 8191a87959
commit 46542fb652
1 changed files with 0 additions and 4 deletions
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4
sys/arm64/include/pte.h
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@ -63,11 +63,7 @@ typedef uint64_t pt_entry_t; /* page table entry */
#define ATTR_IDX(x) ((x) << 2)
#define ATTR_IDX_MASK (7 << 2)
#ifdef SMP
#define ATTR_DEFAULT (ATTR_AF | ATTR_SH(ATTR_SH_IS))
#else
#define ATTR_DEFAULT (ATTR_AF)
#endif
#define ATTR_DESCR_MASK 3