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 399C4C7EE43 for ; Mon, 12 Jun 2023 20:04:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232963AbjFLUEJ (ORCPT ); Mon, 12 Jun 2023 16:04:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229974AbjFLUEH (ORCPT ); Mon, 12 Jun 2023 16:04:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 55B59118 for ; Mon, 12 Jun 2023 13:04:06 -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 dfw.source.kernel.org (Postfix) with ESMTPS id DEF6162D4C for ; Mon, 12 Jun 2023 20:04:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3CE8BC433D2; Mon, 12 Jun 2023 20:04:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1686600245; bh=ZKkf3uI2vzqXnAzk6aKyXHdPwVItlHtrXDkdDdDs7JI=; h=Date:To:From:Subject:From; b=fBkYZE9kGrw4YoaWfHLsuEI2HSEnIUuchZuJaYZSC1hkcuiquiZ9V1qVGrH3cCUUe 0caFtHb6NSWun7ToWkkW6CmPdskANagy7eX5VdOPagwgNEmrxR0hmz9Su6cP9Uyf4w 6Gl993RMxAq1gPkFWrAZaDpy4LhQkTcMZprP8pLA= Date: Mon, 12 Jun 2023 13:04:04 -0700 To: mm-commits@vger.kernel.org, will@kernel.org, vbabka@suse.cz, snitzer@kernel.org, saravanak@google.com, robin.murphy@arm.com, rafael@kernel.org, maz@kernel.org, logang@deltatee.com, lars@metafoo.de, jsnitsel@redhat.com, joro@8bytes.org, Jonathan.Cameron@huawei.com, jic23@kernel.org, isaacmanjarres@google.com, herbert@gondor.apana.org.au, hch@lst.de, gregkh@linuxfoundation.org, daniel@ffwll.ch, broonie@kernel.org, arnd@arndb.de, ardb@kernel.org, agk@redhat.com, catalin.marinas@arm.com, akpm@linux-foundation.org From: Andrew Morton Subject: + drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch added to mm-unstable branch Message-Id: <20230612200405.3CE8BC433D2@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: drivers/base: use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN has been added to the -mm mm-unstable branch. Its filename is drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Catalin Marinas Subject: drivers/base: use ARCH_DMA_MINALIGN instead of ARCH_KMALLOC_MINALIGN Date: Mon, 12 Jun 2023 16:31:49 +0100 ARCH_DMA_MINALIGN represents the minimum (static) alignment for safe DMA operations while ARCH_KMALLOC_MINALIGN is the minimum kmalloc() objects alignment. Link: https://lkml.kernel.org/r/20230612153201.554742-6-catalin.marinas@arm.com Signed-off-by: Catalin Marinas Acked-by: Greg Kroah-Hartman Tested-by: Isaac J. Manjarres Cc: "Rafael J. Wysocki" Cc: Alasdair Kergon Cc: Ard Biesheuvel Cc: Arnd Bergmann Cc: Christoph Hellwig Cc: Daniel Vetter Cc: Herbert Xu Cc: Jerry Snitselaar Cc: Joerg Roedel Cc: Jonathan Cameron Cc: Jonathan Cameron Cc: Lars-Peter Clausen Cc: Logan Gunthorpe Cc: Marc Zyngier Cc: Mark Brown Cc: Mike Snitzer Cc: Robin Murphy Cc: Saravana Kannan Cc: Vlastimil Babka Cc: Will Deacon Signed-off-by: Andrew Morton --- drivers/base/devres.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/base/devres.c~drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign +++ a/drivers/base/devres.c @@ -29,10 +29,10 @@ struct devres { * Some archs want to perform DMA into kmalloc caches * and need a guaranteed alignment larger than * the alignment of a 64-bit integer. - * Thus we use ARCH_KMALLOC_MINALIGN here and get exactly the same - * buffer alignment as if it was allocated by plain kmalloc(). + * Thus we use ARCH_DMA_MINALIGN for data[] which will force the same + * alignment for struct devres when allocated by kmalloc(). */ - u8 __aligned(ARCH_KMALLOC_MINALIGN) data[]; + u8 __aligned(ARCH_DMA_MINALIGN) data[]; }; struct devres_group { _ Patches currently in -mm which might be from catalin.marinas@arm.com are mm-slab-decouple-arch_kmalloc_minalign-from-arch_dma_minalign.patch dma-allow-dma_get_cache_alignment-to-be-overridden-by-the-arch-code.patch mm-slab-simplify-create_kmalloc_cache-args-and-make-it-static.patch mm-slab-limit-kmalloc-minimum-alignment-to-dma_get_cache_alignment.patch drivers-base-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-gpu-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-usb-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch drivers-spi-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch dm-crypt-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch iio-core-use-arch_dma_minalign-instead-of-arch_kmalloc_minalign.patch arm64-allow-kmalloc-caches-aligned-to-the-smaller-cache_line_size.patch dma-mapping-force-bouncing-if-the-kmalloc-size-is-not-cache-line-aligned.patch iommu-dma-force-bouncing-if-the-size-is-not-cacheline-aligned.patch mm-slab-reduce-the-kmalloc-minimum-alignment-if-dma-bouncing-possible.patch arm64-enable-arch_want_kmalloc_dma_bounce-for-arm64.patch