From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:38358 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751875AbdJEIbk (ORCPT ); Thu, 5 Oct 2017 04:31:40 -0400 Subject: Patch "iommu/exynos: Block SYSMMU while invalidating FLPD cache" has been added to the 4.9-stable tree To: m.szyprowski@samsung.com, alexander.levin@verizon.com, gregkh@linuxfoundation.org, jroedel@suse.de Cc: , From: Date: Thu, 05 Oct 2017 10:30:20 +0200 Message-ID: <1507192220675@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled iommu/exynos: Block SYSMMU while invalidating FLPD cache to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: iommu-exynos-block-sysmmu-while-invalidating-flpd-cache.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Thu Oct 5 10:28:31 CEST 2017 From: Marek Szyprowski Date: Mon, 20 Mar 2017 10:17:56 +0100 Subject: iommu/exynos: Block SYSMMU while invalidating FLPD cache From: Marek Szyprowski [ Upstream commit 7d2aa6b814476a2e2794960f844344519246df72 ] Documentation specifies that SYSMMU should be in blocked state while performing TLB/FLPD cache invalidation, so add needed calls to sysmmu_block/unblock. Fixes: 66a7ed84b345d ("iommu/exynos: Apply workaround of caching fault page table entries") CC: stable@vger.kernel.org # v4.10+ Signed-off-by: Marek Szyprowski Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/iommu/exynos-iommu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -542,7 +542,10 @@ static void sysmmu_tlb_invalidate_flpdca spin_lock_irqsave(&data->lock, flags); if (is_sysmmu_active(data) && data->version >= MAKE_MMU_VER(3, 3)) { clk_enable(data->clk_master); - __sysmmu_tlb_invalidate_entry(data, iova, 1); + if (sysmmu_block(data)) { + __sysmmu_tlb_invalidate_entry(data, iova, 1); + sysmmu_unblock(data); + } clk_disable(data->clk_master); } spin_unlock_irqrestore(&data->lock, flags); Patches currently in stable-queue which might be from m.szyprowski@samsung.com are queue-4.9/iommu-exynos-block-sysmmu-while-invalidating-flpd-cache.patch