From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 6 Feb 2002 20:26:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 6 Feb 2002 20:26:03 -0500 Received: from f243.law11.hotmail.com ([64.4.17.243]:42766 "EHLO hotmail.com") by vger.kernel.org with ESMTP id ; Wed, 6 Feb 2002 20:25:46 -0500 X-Originating-IP: [156.153.254.10] From: "Balbir Singh" To: balbir_soni@hotmail.com, linux-kernel@vger.kernel.org Subject: Re: Need help with changing stack size (attn parisc folks) Date: Wed, 06 Feb 2002 17:25:40 -0800 Mime-Version: 1.0 Content-Type: text/plain; format=flowed Message-ID: X-OriginalArrivalTime: 07 Feb 2002 01:25:40.0441 (UTC) FILETIME=[5A9E4C90:01C1AF76] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I got it to work finally. I will post a document on that soon Balbir >From: "Balbir Singh" >To: linux-kernel@vger.kernel.org >CC: balbir_soni@hotmail.com >Subject: Re: Need help with changing stack size (attn parisc folks) >Date: Wed, 06 Feb 2002 16:57:49 -0800 > >I also made changes to lgetuser.S and entry.S, for entries >I missed. > >Balbir > > >>From: "Balbir Singh" >>To: linux-kernel@vger.kernel.org >>CC: balbir_soni@hotmail.com >>Subject: Need help with changing stack size (attn parisc folks) >>Date: Wed, 06 Feb 2002 16:12:12 -0800 >> >>I have some legacy code and I think I run into some >>kind of stack overflow with it. To verify that, I tried >>increasing the stack size from 8K to 16K. I changed >>the following files >> >>processor.h >>current.h >>vmlinux.lds >>head.S >> >>The changes were kind of obvious. I know the PARISC guys >>have done something similar. Is there something missing >>with my changes, since the kernel does not come up, >>it is unable to start even kswapd. The diffs have been >>include below. Please cc to me in your reply since >>I am not hooked onto lkml. >> >>All help appreciated, >> >>Thanks, >>Balbir >> >>--- processor.h.org Wed Feb 6 15:10:37 2002 >>+++ processor.h Wed Feb 6 15:53:10 2002 >>@@ -447,9 +447,9 @@ >>#define KSTK_EIP(tsk) (((unsigned long *)(4096+(unsigned >>long)(tsk)))[1019]) >>#define KSTK_ESP(tsk) (((unsigned long *)(4096+(unsigned >>long)(tsk)))[1022]) >> >>-#define THREAD_SIZE (2*PAGE_SIZE) >>-#define alloc_task_struct() ((struct task_struct *) >>__get_free_pages(GFP_KERNEL,1)) >>-#define free_task_struct(p) free_pages((unsigned long) (p), 1) >>+#define THREAD_SIZE (4*PAGE_SIZE) >>+#define alloc_task_struct() ((struct task_struct *) >>__get_free_pages(GFP_KERNEL,2)) >>+#define free_task_struct(p) free_pages((unsigned long) (p), 2) >>#define get_task_struct(tsk) atomic_inc(&virt_to_page(tsk)->count) >> >>#define init_task (init_task_union.task) >> >>--- current.h.org Wed Feb 6 15:11:51 2002 >>+++ current.h Wed Feb 6 15:52:12 2002 >>@@ -6,7 +6,7 @@ >>static inline struct task_struct * get_current(void) >>{ >> struct task_struct *current; >>- __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~8191UL)); >>+ __asm__("andl %%esp,%0; ":"=r" (current) : "0" (~(THREAD_SIZE - >>1))); >> return current; >> } >> >> >>--- vmlinux.lds.org Wed Feb 6 15:41:07 2002 >>+++ vmlinux.lds Wed Feb 6 15:41:15 2002 >>@@ -36,7 +36,7 @@ >> >> _edata = .; /* End of data section */ >> >>- . = ALIGN(8192); /* init_task */ >>+ . = ALIGN(16384); /* init_task */ >> .data.init_task : { *(.data.init_task) } >> >> . = ALIGN(4096); /* Init code and data */ >> >>--- head.S.org Wed Feb 6 16:21:47 2002 >>+++ head.S Wed Feb 6 16:22:21 2002 >>@@ -320,7 +320,7 @@ >> ret >> >>ENTRY(stack_start) >>- .long SYMBOL_NAME(init_task_union)+8192 >>+ .long SYMBOL_NAME(init_task_union)+16384 >> .long __KERNEL_DS >> >>/* This is the default interrupt "handler" :-) */ >> > > > _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com