Author: kib
Date: Sat Oct 25 21:01:50 2014
New Revision: 273647
URL: https://svnweb.freebsd.org/changeset/base/273647
Log:
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
Modified:
head/sys/dev/acpica/acpi_hpet.c
Modified: head/sys/dev/acpica/acpi_hpet.c
==============================================================================
--- head/sys/dev/acpica/acpi_hpet.c Sat Oct 25 20:42:47 2014
(r273646)
+++ head/sys/dev/acpica/acpi_hpet.c Sat Oct 25 21:01:50 2014
(r273647)
@@ -356,6 +356,7 @@ hpet_mmap(struct cdev *cdev, vm_ooffset_
if (!sc->mmap_allow_write && (nprot & PROT_WRITE))
return (EPERM);
*paddr = rman_get_start(sc->mem_res) + offset;
+ *memattr = VM_MEMATTR_UNCACHEABLE;
return (0);
}
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