提交 5a2fe38d 编写于 作者: O Olof Johansson 提交者: Paul Mackerras

[POWERPC] powerpc: Reduce default cacheline size to 64 bytes

Reduce default cacheline size on 64-bit powerpc from 128 bytes to 64.
This is the architected minimum. In most cases we'll still end up using
cache line information from the device tree, but defaults are used during
early boot and doing a few dcbst/icbi's too many there won't do any harm.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
上级 b7e89214
......@@ -1748,7 +1748,7 @@ _STATIC(__after_prom_start)
_GLOBAL(copy_and_flush)
addi r5,r5,-8
addi r6,r6,-8
4: li r0,16 /* Use the least common */
4: li r0,8 /* Use the smallest common */
/* denominator cache line */
/* size. This results in */
/* extra cache line flushes */
......
......@@ -78,10 +78,10 @@ u64 ppc64_pft_size;
* before we've read this from the device tree.
*/
struct ppc64_caches ppc64_caches = {
.dline_size = 0x80,
.log_dline_size = 7,
.iline_size = 0x80,
.log_iline_size = 7
.dline_size = 0x40,
.log_dline_size = 6,
.iline_size = 0x40,
.log_iline_size = 6
};
EXPORT_SYMBOL_GPL(ppc64_caches);
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册