From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e33.co.us.ibm.com (e33.co.us.ibm.com [32.97.110.151]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e33.co.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 2E3F1DDEC1 for ; Wed, 23 May 2007 19:34:26 +1000 (EST) Received: from d03relay04.boulder.ibm.com (d03relay04.boulder.ibm.com [9.17.195.106]) by e33.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id l4N9YOOG013006 for ; Wed, 23 May 2007 05:34:24 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay04.boulder.ibm.com (8.13.8/8.13.8/NCO v8.3) with ESMTP id l4N9YOXJ215192 for ; Wed, 23 May 2007 03:34:24 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id l4N9YNxs007540 for ; Wed, 23 May 2007 03:34:24 -0600 Message-ID: <46540AB7.304@in.ibm.com> Date: Wed, 23 May 2007 15:04:47 +0530 From: "Sachin P. Sant" MIME-Version: 1.0 To: linuxppc-dev@ozlabs.org, Paul Mackerras Subject: [Patch 1/2] Kexec/Kdump support POWER6 Content-Type: multipart/mixed; boundary="------------030607050202030104090807" Cc: Olof Johansson , Milton Miller II Reply-To: sachinp@in.ibm.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This is a multi-part message in MIME format. --------------030607050202030104090807 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Read supported VRMA page size from device tree. Thanks -Sachin --------------030607050202030104090807 Content-Type: text/plain; name="detect-vrma-page-size" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="detect-vrma-page-size" * Read supported VRMA page size from device tree. Signed-Off-By : Sachin Sant Signed-Off-By : Mohan Kumar M --- 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; --------------030607050202030104090807--