Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751994AbaLRKVK (ORCPT ); Thu, 18 Dec 2014 05:21:10 -0500 Received: from nivc-ms1.auriga.com ([80.240.102.146]:48845 "EHLO nivc-ms1.auriga.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751907AbaLRKVI (ORCPT ); Thu, 18 Dec 2014 05:21:08 -0500 From: Aleksey Makarov To: CC: , David Daney , Aleksey Makarov , Ralf Baechle Subject: [PATCH v2 02/12] MIPS: OCTEON: Fix FP context save. Date: Thu, 18 Dec 2014 13:17:54 +0300 Message-ID: <1418897888-17669-3-git-send-email-aleksey.makarov@auriga.com> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1418897888-17669-1-git-send-email-aleksey.makarov@auriga.com> References: <1418897888-17669-1-git-send-email-aleksey.makarov@auriga.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [80.240.102.213] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Daney It wasn't being saved on task switch. Signed-off-by: David Daney Signed-off-by: Aleksey Makarov --- arch/mips/kernel/octeon_switch.S | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S index 3dec1e8..2787c01 100644 --- a/arch/mips/kernel/octeon_switch.S +++ b/arch/mips/kernel/octeon_switch.S @@ -31,15 +31,11 @@ /* * check if we need to save FPU registers */ - PTR_L t3, TASK_THREAD_INFO(a0) - LONG_L t0, TI_FLAGS(t3) - li t1, _TIF_USEDFPU - and t2, t0, t1 - beqz t2, 1f - nor t1, zero, t1 - - and t0, t0, t1 - LONG_S t0, TI_FLAGS(t3) + .set push + .set noreorder + beqz a3, 1f + PTR_L t3, TASK_THREAD_INFO(a0) + .set pop /* * clear saved user stack CU1 bit @@ -57,14 +53,13 @@ 1: /* check if we need to save COP2 registers */ - PTR_L t2, TASK_THREAD_INFO(a0) - LONG_L t0, ST_OFF(t2) + LONG_L t0, ST_OFF(t3) bbit0 t0, 30, 1f /* Disable COP2 in the stored process state */ li t1, ST0_CU2 xor t0, t1 - LONG_S t0, ST_OFF(t2) + LONG_S t0, ST_OFF(t3) /* Enable COP2 so we can save it */ mfc0 t0, CP0_STATUS -- 2.1.3 -- 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/