Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752404AbdHBNvC (ORCPT ); Wed, 2 Aug 2017 09:51:02 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:35545 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752270AbdHBNvB (ORCPT ); Wed, 2 Aug 2017 09:51:01 -0400 Message-Id: From: Christophe Leroy Subject: [PATCH v3 0/5] 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: Wed, 2 Aug 2017 15:50:58 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1380 Lines: 35 This patch set implements STRICT_KERNEL_RWX on Powerpc32 after fixing a few issues related to kernel code page protection. At the end we take the opportunity to get rid of some unneccessary/outdated fixmap stuff. Changes from v2 to v3: * Rebased on latest linux-powerpc/merge branch * Function remap_init_ram() renamed mark_initmem_nx() to match new PPC64 implementation Changes from v1 to v2: * Rebased on latest linux-next following including of STRICT_KERNEL_RWX for PPC64 * Removed from the serie the two patches already applied. Christophe Leroy (5): 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: Simplify __set_fixmap() arch/powerpc/Kconfig | 2 +- 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/include/asm/pgtable.h | 2 +- arch/powerpc/kernel/vmlinux.lds.S | 2 +- arch/powerpc/mm/init_32.c | 6 +++ arch/powerpc/mm/pgtable_32.c | 66 ++++++++++++++++++---------- 8 files changed, 58 insertions(+), 36 deletions(-) -- 2.13.3