From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751315AbdE2Pb6 (ORCPT ); Mon, 29 May 2017 11:31:58 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:24495 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751011AbdE2Pb4 (ORCPT ); Mon, 29 May 2017 11:31:56 -0400 Message-Id: From: Christophe Leroy Subject: [PATCH 0/7] powerpc/mm: Fix kernel protection and implement STRICT_KERNEL_RWX on PPC32 To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Scott Wood , Balbir Singh Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Mon, 29 May 2017 17:31:54 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set implements STRICT_KERNEL_RWX on Powerpc32 after fixing a few issues related to kernel code page protection. It superseeds the previous patch set identified "Fix kernel protection and implement CONFIG_DEBUG_RODATA on PPC32" This set is based on Balbir Singh set identified "Enable STRICT_KERNEL_RWX" and applies on top of it. At the end we take the opportunity to get rid of some unneccessary/outdated fixmap stuff. Christophe Leroy (7): powerpc/mm: rename map_page() to map_kernel_page() on PPC32 powerpc/mm: Ensure change_page_attr() doesn't invalidate pinned TLBs powerpc/mm: Fix kernel RAM protection after freeing unused memory on PPC32 powerpc/mm: Implement STRICT_KERNEL_RWX on PPC32 powerpc/mm: declare some local functions static powerpc/mm: remove __this_fixmap_does_not_exist() powerpc/mm: Simplify __set_fixmap() arch/powerpc/Kconfig | 3 +- arch/powerpc/include/asm/book3s/32/pgtable.h | 3 +- arch/powerpc/include/asm/fixmap.h | 10 ++-- arch/powerpc/include/asm/nohash/32/pgtable.h | 3 +- arch/powerpc/kernel/vmlinux.lds.S | 2 +- arch/powerpc/mm/8xx_mmu.c | 2 +- arch/powerpc/mm/dma-noncoherent.c | 2 +- arch/powerpc/mm/init_32.c | 6 +++ arch/powerpc/mm/mem.c | 5 +- arch/powerpc/mm/mmu_decl.h | 4 +- arch/powerpc/mm/pgtable_32.c | 73 ++++++++++++++++------------ 11 files changed, 69 insertions(+), 44 deletions(-) -- 2.12.0