From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4D2DFC433EF for ; Fri, 25 Mar 2022 01:30:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357331AbiCYBcB (ORCPT ); Thu, 24 Mar 2022 21:32:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357330AbiCYBbs (ORCPT ); Thu, 24 Mar 2022 21:31:48 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECD723204F for ; Thu, 24 Mar 2022 18:29:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id A5FEDB82725 for ; Fri, 25 Mar 2022 01:29:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60F51C340EC; Fri, 25 Mar 2022 01:29:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1648171796; bh=NhAVR+sOOdD3AanSQ7x+cq7oo85zD6qE2EOG/DgWySs=; h=Date:To:From:Subject:From; b=Xkp01nGohsyclqApyGyXzXJPGpvGPfEQ9oP3Vi2nYCQMLNKSCyvXukMcWjI9TRfQW OikptyRHGzjCUdhtCEmtyX7xUXhZMzlnme8BexI/iA6Z4w7ouTfnssqLdejIqD5Vi0 e7k+9GE+EfT39FukAagQWvTcaFPok+AnYMog2mGQ= Date: Thu, 24 Mar 2022 18:29:55 -0700 To: mm-commits@vger.kernel.org, songmuchun@bytedance.com, linmiaohe@huawei.com, akpm@linux-foundation.org From: Andrew Morton Subject: [merged] mm-memremap-avoid-calling-kasan_remove_zero_shadow-for-device-private-memory.patch removed from -mm tree Message-Id: <20220325012956.60F51C340EC@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory has been removed from the -mm tree. Its filename was mm-memremap-avoid-calling-kasan_remove_zero_shadow-for-device-private-memory.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Miaohe Lin Subject: mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory For device private memory, we do not create a linear mapping for the memory because the device memory is un-accessible. Thus we do not add kasan zero shadow for it. So it's unnecessary to do kasan_remove_zero_shadow() for it. Link: https://lkml.kernel.org/r/20220126092602.1425-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Reviewed-by: Muchun Song Signed-off-by: Andrew Morton --- mm/memremap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/memremap.c~mm-memremap-avoid-calling-kasan_remove_zero_shadow-for-device-private-memory +++ a/mm/memremap.c @@ -282,7 +282,8 @@ static int pagemap_range(struct dev_page return 0; err_add_memory: - kasan_remove_zero_shadow(__va(range->start), range_len(range)); + if (!is_private) + kasan_remove_zero_shadow(__va(range->start), range_len(range)); err_kasan: untrack_pfn(NULL, PHYS_PFN(range->start), range_len(range)); err_pfn_remap: _ Patches currently in -mm which might be from linmiaohe@huawei.com are mm-huge_memory-make-is_transparent_hugepage-static.patch