Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751170AbZKYFzE (ORCPT ); Wed, 25 Nov 2009 00:55:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750791AbZKYFzD (ORCPT ); Wed, 25 Nov 2009 00:55:03 -0500 Received: from smtp.gentoo.org ([140.211.166.183]:58580 "EHLO smtp.gentoo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750778AbZKYFzC (ORCPT ); Wed, 25 Nov 2009 00:55:02 -0500 From: Mike Frysinger To: uclinux-dev@uclinux.org, David Howells , David McCullough , Greg Ungerer , Paul Mundt Cc: linux-kernel@vger.kernel.org, uclinux-dist-devel@blackfin.uclinux.org, Jie Zhang Subject: [PATCH] NOMMU: use copy_*_user_page() in access_process_vm() Date: Wed, 25 Nov 2009 00:55:03 -0500 Message-Id: <1259128503-28276-1-git-send-email-vapier@gentoo.org> X-Mailer: git-send-email 1.6.5.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1389 Lines: 39 From: Jie Zhang The mmu code uses the copy_*_user_page() variants in access_process_vm() rather than copy_*_user() as the former includes an icache flush. This is important when doing things like setting software breakpoints with gdb. So switch the nommu code over to do the same. Signed-off-by: Jie Zhang Signed-off-by: Mike Frysinger --- mm/nommu.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/nommu.c b/mm/nommu.c index 9876fa0..51ae9be 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1889,9 +1889,11 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in /* only read or write mappings where it is permitted */ if (write && vma->vm_flags & VM_MAYWRITE) - len -= copy_to_user((void *) addr, buf, len); + copy_to_user_page(vma, NULL, NULL, + (void *) addr, buf, len); else if (!write && vma->vm_flags & VM_MAYREAD) - len -= copy_from_user(buf, (void *) addr, len); + copy_from_user_page(vma, NULL, NULL, + buf, (void *) addr, len); else len = 0; } else { -- 1.6.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/