From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752037AbdGGKGj (ORCPT ); Fri, 7 Jul 2017 06:06:39 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:47568 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750768AbdGGKGi (ORCPT ); Fri, 7 Jul 2017 06:06:38 -0400 Message-Id: From: Christophe Leroy Subject: [PATCH v2 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: Fri, 7 Jul 2017 12:06:35 +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. At the end we take the opportunity to get rid of some unneccessary/outdated fixmap stuff. 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/kernel/vmlinux.lds.S | 2 +- arch/powerpc/mm/init_32.c | 6 +++ arch/powerpc/mm/mem.c | 1 + arch/powerpc/mm/mmu_decl.h | 3 ++ arch/powerpc/mm/pgtable_32.c | 66 ++++++++++++++++++---------- 9 files changed, 61 insertions(+), 35 deletions(-) -- 2.12.0