Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752049AbbBVQJ3 (ORCPT ); Sun, 22 Feb 2015 11:09:29 -0500 Received: from smtp3-g21.free.fr ([212.27.42.3]:43588 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751867AbbBVQJ0 (ORCPT ); Sun, 22 Feb 2015 11:09:26 -0500 From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= To: iommu@lists.linux-foundation.org, linux-next@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, =?UTF-8?q?Vincent=20Stehl=C3=A9?= , Laurent Pinchart , Will Deacon Subject: [PATCH linux-next] iommu: Enable LPAE pagetable on ARM only Date: Sun, 22 Feb 2015 17:09:06 +0100 Message-Id: <1424621346-7822-1-git-send-email-vincent.stehle@laposte.net> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2458 Lines: 77 LPAE iommu page table makes sense only for ARM architecture. Add the corresponding dependency in Kconfig. This fixes the following runtime warnings on PA-RISC architecture: WARNING: at drivers/iommu/io-pgtable-arm.c:413 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.19.0-next-20150222-00002-gc420256 #2 task: 17ca0000 ti: 17ca8000 task.ti: 17ca8000 YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI PSW: 00000000000001001111111100001111 Not tainted r00-03 0004ff0f 0000001b 104871b0 17ca83c0 r04-07 00001000 00000000 00000000 00000000 r08-11 00000000 40001000 1013b36c 17ca8248 r12-15 00000080 17e712c0 00000000 17c5e100 r16-19 0000000c 105d8eb0 40001000 ffffffff r20-23 00000000 00800020 1048717c 00000000 r24-27 00001000 00000000 00000009 10774ce0 r28-31 00000000 00000027 17ca8480 10486d44 sr00-03 00000000 00000000 00000000 00000000 sr04-07 00000000 00000000 00000000 00000000 IASQ: 00000000 00000000 IAOQ: 10486df4 10486df8 IIR: 03ffe01f ISR: 00000000 IOR: 17c86e54 CPU: 0 CR30: 17ca8000 CR31: 00000002 ORIG_R28: 00000001 IAOQ[0]: __arm_lpae_unmap+0x144/0x4cc IAOQ[1]: __arm_lpae_unmap+0x148/0x4cc RP(r2): arm_lpae_unmap+0x34/0x6c Backtrace: [<104871b0>] arm_lpae_unmap+0x34/0x6c [<10127944>] 0x10127944 [<10168ee0>] do_one_initcall+0x128/0x1dc [<101028fc>] 0x101028fc [<10161b48>] kernel_init+0x1c/0x118 [<1015d01c>] end_fault_vector+0x1c/0x24 [<101762ec>] save_stack_trace+0x28/0x60 Signed-off-by: Vincent Stehlé Cc: Laurent Pinchart Cc: Will Deacon --- Hi, This can be seen with e.g. Linux next-20150222 on parisc with allmodconfig. Best regards, V. drivers/iommu/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index baa0d97..c73fd72 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -22,6 +22,7 @@ config IOMMU_IO_PGTABLE config IOMMU_IO_PGTABLE_LPAE bool "ARMv7/v8 Long Descriptor Format" + depends on ARM select IOMMU_IO_PGTABLE help Enable support for the ARM long descriptor pagetable format. -- 2.1.4 -- 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/