Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965452AbbBCLmz (ORCPT ); Tue, 3 Feb 2015 06:42:55 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:34005 "EHLO mailhub1.si.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933559AbbBCLib (ORCPT ); Tue, 3 Feb 2015 06:38:31 -0500 From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , scottwood@freescale.com CC: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Joakim Tjernlund Subject: [PATCH v3 00/11] powerpc8xx: Further optimisation of TLB handling Message-Id: <20150203113816.B4B991A5F12@localhost.localdomain> Date: Tue, 3 Feb 2015 12:38:16 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1656 Lines: 39 This patchset provides a further optimisation of TLB handling in the 8xx. Main changes are based on: - Using processor handling of PGD/PTE Validity bits instead of testing ourselves the entries validity - Aligning PGD address to allow direct bit manipulation - Not saving registers like CR when not needed It also adds support to any TASK_SIZE Patchset: 01 - powerpc/8xx: remove remaining unnecessary code in FixupDAR 02 - powerpc/8xx: remove tests on PGDIR entry validity 03 - powerpc32: Use kmem_cache memory for PGDIR 04 - powerpc/8xx: Take benefit of aligned PGDIR 05 - powerpc/8xx: Optimise access to swapper_pg_dir 06 - powerpc/8xx: Remove duplicated code in set_context() 07 - powerpc/8xx: macro for handling CPU15 errata 08 - powerpc/8xx: Handle CR out of exception PROLOG/EPILOG 09 - powerpc/8xx: dont save CR in SCRATCH registers 10 - powerpc/8xx: Use SPRG2 instead of DAR for saving r3 11 - powerpc/8xx: Add support for TASK_SIZE greater than 0x80000000 All changes have been successfully tested on MPC885 Signed-off-by: Christophe Leroy Tested-by: Christophe Leroy --- v3: 01-06 no change ; 07-11 changed arch/powerpc/include/asm/pgtable-ppc32.h | 4 + arch/powerpc/kernel/head_8xx.S | 197 +++++++++++++++---------------- arch/powerpc/mm/pgtable_32.c | 16 ++- 3 files changed, 111 insertions(+), 106 deletions(-) -- 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/