From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1XfsC1-00058g-9T for user-mode-linux-devel@lists.sourceforge.net; Sun, 19 Oct 2014 15:14:49 +0000 Received: from www17.your-server.de ([213.133.104.17]) by sog-mx-4.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1XfsBz-00023h-9S for user-mode-linux-devel@lists.sourceforge.net; Sun, 19 Oct 2014 15:14:49 +0000 Received: from [94.219.115.221] (helo=[192.168.2.108]) by www17.your-server.de with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.80.1) (envelope-from ) id 1XfsBs-0005sP-Mu for user-mode-linux-devel@lists.sourceforge.net; Sun, 19 Oct 2014 17:14:40 +0200 Message-ID: <1413731323.2991.19.camel@localhost.localdomain> From: Thomas Meyer Date: Sun, 19 Oct 2014 17:08:43 +0200 Mime-Version: 1.0 List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: [uml-devel] [PATCH v3 1/3] um: Move uml_postsetup in the init_thread stack To: user-mode-linux-devel atomic_notifier_chain_register() and uml_postsetup() do call kernel code that rely on the current macro and a valid task_struct resp. thread_info struct. Signed-off-by: Thomas Meyer --- diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h index 41c8c77..ca1843e 100644 --- a/arch/um/include/shared/as-layout.h +++ b/arch/um/include/shared/as-layout.h @@ -56,6 +56,7 @@ extern unsigned long brk_start; extern unsigned long host_task_size; extern int linux_main(int argc, char **argv); +extern void uml_finishsetup(void); struct siginfo; extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *); diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index 016adf0..ab72560 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -247,6 +247,16 @@ static struct notifier_block panic_exit_notifier = { .priority = 0 }; +void uml_finishsetup(void) +{ + atomic_notifier_chain_register(&panic_notifier_list, + &panic_exit_notifier); + + uml_postsetup(); + + new_thread_handler(); +} + /* Set during early boot */ unsigned long task_size; EXPORT_SYMBOL(task_size); @@ -367,11 +377,6 @@ int __init linux_main(int argc, char **argv) printf("Kernel virtual memory size shrunk to %lu bytes\n", virtmem_size); - atomic_notifier_chain_register(&panic_notifier_list, - &panic_exit_notifier); - - uml_postsetup(); - stack_protections((unsigned long) &init_thread_info); os_flush_stdout(); diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 908579f..8666cb6 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -674,7 +674,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf) n = setjmp(initial_jmpbuf); switch (n) { case INIT_JMP_NEW_THREAD: - (*switch_buf)[0].JB_IP = (unsigned long) new_thread_handler; + (*switch_buf)[0].JB_IP = (unsigned long) uml_finishsetup; (*switch_buf)[0].JB_SP = (unsigned long) stack + UM_THREAD_SIZE - sizeof(void *); break; -- 1.9.3 ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel