Set the caching mode for the usermode mapping of the HPET registers
page to uncached. Reviewed by: rpaulo Sponsored by: The FreeBSD Foundation MFC after: 1 week
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=273647
@ -356,6 +356,7 @@ hpet_mmap(struct cdev *cdev, vm_ooffset_t offset, vm_paddr_t *paddr,
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if (!sc->mmap_allow_write && (nprot & PROT_WRITE))
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return (EPERM);
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*paddr = rman_get_start(sc->mem_res) + offset;
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*memattr = VM_MEMATTR_UNCACHEABLE;
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return (0);
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}
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