svn commit: r273647 - head/sys/dev/acpica

[Konstantin Belousov]

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);
 }