From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932950AbXBLDmY (ORCPT ); Sun, 11 Feb 2007 22:42:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932954AbXBLDmY (ORCPT ); Sun, 11 Feb 2007 22:42:24 -0500 Received: from ozlabs.org ([203.10.76.45]:50944 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932950AbXBLDmX (ORCPT ); Sun, 11 Feb 2007 22:42:23 -0500 Subject: [PATCH 1/2] lguest preparation: EXPORT_SYMBOL_GPL 5 functions From: Rusty Russell To: Andrew Morton Cc: lkml - Kernel Mailing List , virtualization , Len Brown In-Reply-To: <1171251578.10409.17.camel@localhost.localdomain> References: <1171251120.10409.2.camel@localhost.localdomain> <1171251185.10409.4.camel@localhost.localdomain> <1171251258.10409.7.camel@localhost.localdomain> <1171251335.10409.10.camel@localhost.localdomain> <1171251406.10409.13.camel@localhost.localdomain> <1171251471.10409.15.camel@localhost.localdomain> <1171251578.10409.17.camel@localhost.localdomain> Content-Type: text/plain Date: Mon, 12 Feb 2007 14:41:38 +1100 Message-Id: <1171251698.10409.20.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org lguest does some fairly lowlevel things to support a host, which normal modules don't need: math_state_restore: When the guest triggers a Device Not Available fault, we need to be able to restore the FPU __put_task_struct: We need to hold a reference to another task for inter-guest I/O, and put_task_struct() is an inline function which calls __put_task_struct. access_process_vm: We need to access another task for inter-guest I/O. map_vm_area & __get_vm_area: We need to map the switcher shim (ie. monitor) at 0xFFC01000. Signed-off-by: Rusty Russell =================================================================== --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -1054,6 +1054,7 @@ asmlinkage void math_state_restore(void) thread->status |= TS_USEDFPU; /* So we fnsave on switch_to() */ tsk->fpu_counter++; } +EXPORT_SYMBOL_GPL(math_state_restore); #ifndef CONFIG_MATH_EMULATION =================================================================== --- a/kernel/fork.c +++ b/kernel/fork.c @@ -126,6 +126,7 @@ void __put_task_struct(struct task_struc if (!profile_handoff_task(tsk)) free_task(tsk); } +EXPORT_SYMBOL_GPL(__put_task_struct); void __init fork_init(unsigned long mempages) { =================================================================== --- a/mm/memory.c +++ b/mm/memory.c @@ -2692,3 +2692,4 @@ int access_process_vm(struct task_struct return buf - old_buf; } +EXPORT_SYMBOL_GPL(access_process_vm); =================================================================== --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -159,6 +159,7 @@ int map_vm_area(struct vm_struct *area, flush_cache_vmap((unsigned long) area->addr, end); return err; } +EXPORT_SYMBOL_GPL(map_vm_area); static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long flags, unsigned long start, unsigned long end, @@ -237,6 +238,7 @@ struct vm_struct *__get_vm_area(unsigned { return __get_vm_area_node(size, flags, start, end, -1, GFP_KERNEL); } +EXPORT_SYMBOL_GPL(__get_vm_area); /** * get_vm_area - reserve a contingous kernel virtual area