From: "Sachin P. Sant" <sachinp@in•ibm.com>
To: linuxppc-dev@ozlabs•org, Paul Mackerras <paulus@samba•org>
Cc: Olof Johansson <olof@lixom•net>, Milton Miller II <miltonm@us•ibm.com>
Subject: [Patch 1/2] Kexec/Kdump support POWER6
Date: Wed, 23 May 2007 15:04:47 +0530 [thread overview]
Message-ID: <46540AB7.304@in.ibm.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 67 bytes --]
Read supported VRMA page size from device tree.
Thanks
-Sachin
[-- Attachment #2: detect-vrma-page-size --]
[-- Type: text/plain, Size: 2012 bytes --]
* Read supported VRMA page size from device tree.
Signed-Off-By : Sachin Sant <sachinp@in•ibm.com>
Signed-Off-By : Mohan Kumar M <mohan@in•ibm.com>
---
diff -Naurp linux-2.6.22-rc2/arch/powerpc/kernel/setup_64.c linux-2.6.22-rc2-vrma/arch/powerpc/kernel/setup_64.c
--- linux-2.6.22-rc2/arch/powerpc/kernel/setup_64.c 2007-05-19 09:36:17.000000000 +0530
+++ linux-2.6.22-rc2-vrma/arch/powerpc/kernel/setup_64.c 2007-05-23 11:25:45.000000000 +0530
@@ -73,6 +73,10 @@ int have_of = 1;
int boot_cpuid = 0;
u64 ppc64_pft_size;
+/* For VRMA */
+u64 ppc64_vrma_page_shift;
+int have_vrma = 0;
+
/* Pick defaults since we might want to patch instructions
* before we've read this from the device tree.
*/
diff -Naurp linux-2.6.22-rc2/arch/powerpc/mm/hash_utils_64.c linux-2.6.22-rc2-vrma/arch/powerpc/mm/hash_utils_64.c
--- linux-2.6.22-rc2/arch/powerpc/mm/hash_utils_64.c 2007-05-19 09:36:17.000000000 +0530
+++ linux-2.6.22-rc2-vrma/arch/powerpc/mm/hash_utils_64.c 2007-05-23 11:26:03.000000000 +0530
@@ -199,6 +199,13 @@ static int __init htab_dt_scan_page_size
if (type == NULL || strcmp(type, "cpu") != 0)
return 0;
+ prop = (u32 *)of_get_flat_dt_prop(node, "ibm,vrma-page-sizes", &size);
+ if (prop != NULL) {
+ DBG("VRMA Page size from device-tree:\n");
+ ppc64_vrma_page_shift = prop[0];
+ have_vrma = 1;
+ }
+
prop = (u32 *)of_get_flat_dt_prop(node,
"ibm,segment-page-sizes", &size);
if (prop != NULL) {
diff -Naurp linux-2.6.22-rc2/include/asm-powerpc/page_64.h linux-2.6.22-rc2-vrma/include/asm-powerpc/page_64.h
--- linux-2.6.22-rc2/include/asm-powerpc/page_64.h 2007-05-19 09:36:17.000000000 +0530
+++ linux-2.6.22-rc2-vrma/include/asm-powerpc/page_64.h 2007-05-23 11:25:27.000000000 +0530
@@ -76,6 +76,10 @@ static inline void copy_page(void *to, v
/* Log 2 of page table size */
extern u64 ppc64_pft_size;
+/* For VRMA */
+extern u64 ppc64_vrma_page_shift;
+extern int have_vrma;
+
/* Large pages size */
#ifdef CONFIG_HUGETLB_PAGE
extern unsigned int HPAGE_SHIFT;
next reply other threads:[~2007-05-23 9:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-23 9:34 Sachin P. Sant [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-05-22 12:22 [Patch 0/2] Kexec/Kdump support POWER6 Sachin P. Sant
2007-05-22 12:24 ` [Patch 1/2] " Sachin P. Sant
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