Changeset f72906c in mainline for kernel/arch/sparc64/include/arch/mm/sun4u/frame.h

Timestamp:

2013-09-12T18:09:51Z (11 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

69f5f19

Parents:

b11f6fb

Message:

prefer allocating physical frames from the so called low priority memory (< 16 MB on ia32 and amd64)
this saves the high priority memory for legacy DMA transfers, etc.

File:

• kernel/arch/sparc64/include/arch/mm/sun4u/frame.h (modified) (3 diffs)

kernel/arch/sparc64/include/arch/mm/sun4u/frame.h

@@ -27 +27 @@
  */
 
-/** @addtogroup sparc64mm       
+/** @addtogroup sparc64mm
  * @{
  */
@@ -41 +41 @@
  * Therefore, the kernel uses 8K only internally on the TLB and TSB levels.
  */
-#define MMU_FRAME_WIDTH         13      /* 8K */
-#define MMU_FRAME_SIZE          (1 << MMU_FRAME_WIDTH)
+#define MMU_FRAME_WIDTH  13  /* 8K */
+#define MMU_FRAME_SIZE   (1 << MMU_FRAME_WIDTH)
 
 /*
@@ -49 +49 @@
  * each 16K page with a pair of adjacent 8K pages.
  */
-#define FRAME_WIDTH             14      /* 16K */
-#define FRAME_SIZE              (1 << FRAME_WIDTH)
+#define FRAME_WIDTH  14  /* 16K */
+#define FRAME_SIZE   (1 << FRAME_WIDTH)
+
+#define FRAME_LOWPRIO  0
 
 #ifndef __ASM__