Author: jhb
Date: Thu Mar 29 16:51:22 2012
New Revision: 233671
URL: http://svn.freebsd.org/changeset/base/233671
Log:
- Rename VM_MEMATTR_UNCACHED to VM_MEMATTR_WEAK_UNCACHEABLE on x86 to
be less ambiguous and more clearly identify what it means. This
attribute is what Intel refers to as UC-, and it's only difference
relative to normal UC memory is that a WC MTRR will override a UC-
PAT entry causing the memory to be treated as WC, whereas a UC PAT
entry will always override the MTRR.
- Remove the VM_MEMATTR_UNCACHED alias from powerpc.
Modified:
head/sys/amd64/include/vm.h
head/sys/i386/include/vm.h
head/sys/powerpc/include/vm.h
Modified: head/sys/amd64/include/vm.h
==============================================================================
--- head/sys/amd64/include/vm.h Thu Mar 29 16:48:36 2012 (r233670)
+++ head/sys/amd64/include/vm.h Thu Mar 29 16:51:22 2012 (r233671)
@@ -38,7 +38,7 @@
#define VM_MEMATTR_WRITE_THROUGH
((vm_memattr_t)PAT_WRITE_THROUGH)
#define VM_MEMATTR_WRITE_PROTECTED
((vm_memattr_t)PAT_WRITE_PROTECTED)
#define VM_MEMATTR_WRITE_BACK ((vm_memattr_t)PAT_WRITE_BACK)
-#define VM_MEMATTR_UNCACHED ((vm_memattr_t)PAT_UNCACHED)
+#define VM_MEMATTR_WEAK_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHED)
#define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK
Modified: head/sys/i386/include/vm.h
==============================================================================
--- head/sys/i386/include/vm.h Thu Mar 29 16:48:36 2012 (r233670)
+++ head/sys/i386/include/vm.h Thu Mar 29 16:51:22 2012 (r233671)
@@ -38,7 +38,7 @@
#define VM_MEMATTR_WRITE_THROUGH
((vm_memattr_t)PAT_WRITE_THROUGH)
#define VM_MEMATTR_WRITE_PROTECTED
((vm_memattr_t)PAT_WRITE_PROTECTED)
#define VM_MEMATTR_WRITE_BACK ((vm_memattr_t)PAT_WRITE_BACK)
-#define VM_MEMATTR_UNCACHED ((vm_memattr_t)PAT_UNCACHED)
+#define VM_MEMATTR_WEAK_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHED)
#define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK
Modified: head/sys/powerpc/include/vm.h
==============================================================================
--- head/sys/powerpc/include/vm.h Thu Mar 29 16:48:36 2012
(r233670)
+++ head/sys/powerpc/include/vm.h Thu Mar 29 16:51:22 2012
(r233671)
@@ -34,7 +34,6 @@
/* Memory attributes. */
#define VM_MEMATTR_DEFAULT 0
#define VM_MEMATTR_UNCACHEABLE 0x01
-#define VM_MEMATTR_UNCACHED VM_MEMATTR_UNCACHEABLE
#define VM_MEMATTR_CACHEABLE 0x02
#define VM_MEMATTR_WRITE_COMBINING 0x04
#define VM_MEMATTR_WRITE_BACK 0x08
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