Re: [PATCH 2/2] x86: mtrr_cleanup try gran_size to less than 1M
From: H. Peter Anvin
Date: Fri Oct 03 2008 - 03:39:22 EST
Ingo Molnar wrote:
* J.A. MagallÃn <jamagallon@xxxxxxx> wrote:
Also, on a 64 bit box with 4Gb, it gives this:
cicely:~# cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size=4096MB: write-back, count=1
reg01: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
reg02: base=0x140000000 (5120MB), size= 512MB: write-back, count=1
reg03: base=0x160000000 (5632MB), size= 256MB: write-back, count=1
reg04: base=0x80000000 (2048MB), size=2048MB: uncachable, count=1
Patch below cleans up formatting, with space for big bases and sizes (64 Gb).
applied to tip/x86/mtrr, thanks!
+++ arch/x86/kernel/cpu/mtrr/if.c 2008-10-03 00:22:34.000000000 +0200
@@ -16,7 +16,7 @@
static const char *const mtrr_strings[MTRR_NUM_TYPES] =
{
"uncachable", /* 0 */
- "write-combining", /* 1 */
+ "write-combine", /* 1 */
hm, maybe this bit could confuse versions of Xorg that modifies
/proc/mtrr - i.e. this could be part of the ABI towards user-space.
We'll see.
This *IS* part of the ABI toward userspace, although I think Xorg uses
the ioctl() interface.
-hpa
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