From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: + gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch added to -mm tree Date: Tue, 14 Apr 2020 21:47:48 -0700 Message-ID: <20200415044748.A6SPV9ELr%akpm@linux-foundation.org> References: <20200412004155.1a8f4e081b4e03ef5903abb5@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.29.99]:39862 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393127AbgDOErv (ORCPT ); Wed, 15 Apr 2020 00:47:51 -0400 In-Reply-To: <20200412004155.1a8f4e081b4e03ef5903abb5@linux-foundation.org> Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: airlied@linux.ie, benh@kernel.crashing.org, borntraeger@de.ibm.com, catalin.marinas@arm.com, christophe.leroy@c-s.fr, daniel.vetter@ffwll.ch, daniel@ffwll.ch, gor@linux.ibm.com, gregkh@linuxfoundation.org, haiyangz@microsoft.com, hannes@cmpxchg.org, hch@lst.de, heiko.carstens@de.ibm.com, kys@microsoft.com, labbott@redhat.com, mark.rutland@arm.com, mikelley@microsoft.com, minchan@kernel.org, mm-commits@vger.kernel.org, ngupta@vflare.org, paulus@ozlabs.org, peterz@infradead.org, robin.murphy@arm.com, sakari.ailus@linux.intel.com, sthemmin@microsoft.com, sumit.semwal@linaro.org, wei.liu@kernel.org, will@kernel.org, xiang@kernel.org The patch titled Subject: gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc has been added to the -mm tree. Its filename is gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch 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 and is updated there every 3-4 working days ------------------------------------------------------ From: Christoph Hellwig Subject: gpu/drm: remove the powerpc hack in drm_legacy_sg_alloc The non-cached vmalloc mapping was initially added as a hack for the first-gen amigaone platform (6xx/book32s), isn't fully supported upstream, and which used the legacy radeon driver together with non-coherent DMA. However this only ever worked reliably for DRI . Remove the hack as it is the last user of __vmalloc passing a page protection flag other than PAGE_KERNEL and didn't do anything for other platforms with non-coherent DMA. Link: http://lkml.kernel.org/r/20200414131348.444715-21-hch@lst.de Signed-off-by: Christoph Hellwig Acked-by: Daniel Vetter Acked-by: Peter Zijlstra (Intel) Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Daniel Vetter Cc: David Airlie Cc: Gao Xiang Cc: Greg Kroah-Hartman Cc: Haiyang Zhang Cc: Johannes Weiner Cc: "K. Y. Srinivasan" Cc: Laura Abbott Cc: Mark Rutland Cc: Michael Kelley Cc: Minchan Kim Cc: Nitin Gupta Cc: Robin Murphy Cc: Sakari Ailus Cc: Stephen Hemminger Cc: Sumit Semwal Cc: Wei Liu Cc: Benjamin Herrenschmidt Cc: Catalin Marinas Cc: Heiko Carstens Cc: Paul Mackerras Cc: Vasily Gorbik Cc: Will Deacon Signed-off-by: Andrew Morton --- drivers/gpu/drm/drm_scatter.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-) --- a/drivers/gpu/drm/drm_scatter.c~gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc +++ a/drivers/gpu/drm/drm_scatter.c @@ -43,15 +43,6 @@ #define DEBUG_SCATTER 0 -static inline void *drm_vmalloc_dma(unsigned long size) -{ -#if defined(__powerpc__) && defined(CONFIG_NOT_COHERENT_CACHE) - return __vmalloc(size, GFP_KERNEL, pgprot_noncached_wc(PAGE_KERNEL)); -#else - return vmalloc_32(size); -#endif -} - static void drm_sg_cleanup(struct drm_sg_mem * entry) { struct page *page; @@ -126,7 +117,7 @@ int drm_legacy_sg_alloc(struct drm_devic return -ENOMEM; } - entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT); + entry->virtual = vmalloc_32(pages << PAGE_SHIFT); if (!entry->virtual) { kfree(entry->busaddr); kfree(entry->pagelist); _ Patches currently in -mm which might be from hch@lst.de are x86-hyperv-use-vmalloc_exec-for-the-hypercall-page.patch x86-fix-vmap-arguments-in-map_irq_stack.patch staging-android-ion-use-vmap-instead-of-vm_map_ram.patch staging-media-ipu3-use-vmap-instead-of-reimplementing-it.patch dma-mapping-use-vmap-insted-of-reimplementing-it.patch powerpc-add-an-ioremap_phb-helper.patch powerpc-remove-__ioremap_at-and-__iounmap_at.patch mm-remove-__get_vm_area.patch mm-unexport-unmap_kernel_range_noflush.patch mm-rename-config_pgtable_mapping-to-config_zsmalloc_pgtable_mapping.patch mm-only-allow-page-table-mappings-for-built-in-zsmalloc.patch mm-pass-addr-as-unsigned-long-to-vb_free.patch mm-remove-vmap_page_range_noflush-and-vunmap_page_range.patch mm-rename-vmap_page_range-to-map_kernel_range.patch mm-dont-return-the-number-of-pages-from-map_kernel_range_noflush.patch mm-remove-map_vm_range.patch mm-remove-unmap_vmap_area.patch mm-remove-the-prot-argument-from-vm_map_ram.patch mm-enforce-that-vmap-cant-map-pages-executable.patch gpu-drm-remove-the-powerpc-hack-in-drm_legacy_sg_alloc.patch mm-remove-the-pgprot-argument-to-__vmalloc.patch mm-remove-the-prot-argument-to-__vmalloc_node.patch mm-remove-both-instances-of-__vmalloc_node_flags.patch mm-remove-__vmalloc_node_flags_caller.patch mm-switch-the-test_vmalloc-module-to-use-__vmalloc_node.patch mm-remove-vmalloc_user_node_flags.patch arm64-use-__vmalloc_node-in-arch_alloc_vmap_stack.patch powerpc-use-__vmalloc_node-in-alloc_vm_stack.patch s390-use-__vmalloc_node-in-stack_alloc.patch