Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752971Ab3IXISo (ORCPT ); Tue, 24 Sep 2013 04:18:44 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:32206 "EHLO mailhub1.si.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750774Ab3IXISm (ORCPT ); Tue, 24 Sep 2013 04:18:42 -0400 Date: Tue, 24 Sep 2013 10:18:39 +0200 Message-Id: <201309240818.r8O8IdF9016374@localhost.localdomain> From: Christophe Leroy To: Benjamin Herrenschmidt , Paul Mackerras CC: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Joakim Tjernlund Subject: [PATCH v4] powerpc 8xx: Fixing issue with CONFIG_PIN_TLB Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1100 Lines: 26 Activating CONFIG_PIN_TLB is supposed to pin the IMMR and the first three 8Mbytes pages. But the setting of MD_CTR to a pinnable entry was missing before the pinning of the third 8Mb page. As the index is decremented module 28 (MD_RSV4D is set) after every DTLB update, the third 8Mbytes page was not pinned. Signed-off-by: Christophe Leroy diff -ur linux-3.11.org/arch/powerpc/kernel/head_8xx.S linux-3.11/arch/powerpc/kernel/head_8xx.S --- linux-3.11.org/arch/powerpc/kernel/head_8xx.S 2013-09-02 22:46:10.000000000 +0200 +++ linux-3.11/arch/powerpc/kernel/head_8xx.S 2013-09-09 11:28:54.000000000 +0200 @@ -862,6 +862,9 @@ addis r11, r11, 0x0080 /* Add 8M */ mtspr SPRN_MD_RPN, r11 + addi r10, r10, 0x0100 + mtspr SPRN_MD_CTR, r10 + addis r8, r8, 0x0080 /* Add 8M */ mtspr SPRN_MD_EPN, r8 mtspr SPRN_MD_TWC, r9 -- 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/