From patchwork Sun Mar 8 08:44:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 447693 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 7CE591401DE for ; Sun, 8 Mar 2015 19:50:31 +1100 (AEDT) Received: from localhost ([::1]:37888 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YUWur-0005pN-Ku for incoming@patchwork.ozlabs.org; Sun, 08 Mar 2015 04:50:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44130) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YUWph-0004c6-5N for qemu-devel@nongnu.org; Sun, 08 Mar 2015 04:45:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YUWpb-0004hs-Ar for qemu-devel@nongnu.org; Sun, 08 Mar 2015 04:45:09 -0400 Received: from cantor2.suse.de ([195.135.220.15]:33813 helo=mx2.suse.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YUWpa-0004g4-NM; Sun, 08 Mar 2015 04:45:03 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id C7E85AD7F; Sun, 8 Mar 2015 08:45:01 +0000 (UTC) From: Alexander Graf To: qemu-ppc@nongnu.org Date: Sun, 8 Mar 2015 09:44:43 +0100 Message-Id: <1425804297-53727-25-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1425804297-53727-1-git-send-email-agraf@suse.de> References: <1425804297-53727-1-git-send-email-agraf@suse.de> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x (no timestamps) [generic] X-Received-From: 195.135.220.15 Cc: peter.maydell@linaro.org, Mark Cave-Ayland , qemu-devel@nongnu.org Subject: [Qemu-devel] [PULL 24/38] target-ppc: move sdr1 value change detection logic to helper_store_sdr1() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Mark Cave-Ayland Otherwise when cpu_post_load calls ppc_store_sdr1() when restoring a VM snapshot the value is deemed unchanged and so the internal env->htab* variables aren't set correctly. Signed-off-by: Mark Cave-Ayland Reviewed-by: Paolo Bonzini Signed-off-by: Alexander Graf --- target-ppc/misc_helper.c | 7 ++++++- target-ppc/mmu_helper.c | 35 +++++++++++++++-------------------- 2 files changed, 21 insertions(+), 21 deletions(-) diff --git a/target-ppc/misc_helper.c b/target-ppc/misc_helper.c index a577b3a..6b12ca8 100644 --- a/target-ppc/misc_helper.c +++ b/target-ppc/misc_helper.c @@ -77,8 +77,13 @@ void helper_msr_facility_check(CPUPPCState *env, uint32_t bit, void helper_store_sdr1(CPUPPCState *env, target_ulong val) { + PowerPCCPU *cpu = ppc_env_get_cpu(env); + if (!env->external_htab) { - ppc_store_sdr1(env, val); + if (env->spr[SPR_SDR1] != val) { + ppc_store_sdr1(env, val); + tlb_flush(CPU(cpu), 1); + } } } diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c index 660be7f..527c6ad 100644 --- a/target-ppc/mmu_helper.c +++ b/target-ppc/mmu_helper.c @@ -2036,31 +2036,26 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr) /* Special registers manipulation */ void ppc_store_sdr1(CPUPPCState *env, target_ulong value) { - PowerPCCPU *cpu = ppc_env_get_cpu(env); - qemu_log_mask(CPU_LOG_MMU, "%s: " TARGET_FMT_lx "\n", __func__, value); assert(!env->external_htab); - if (env->spr[SPR_SDR1] != value) { - env->spr[SPR_SDR1] = value; + env->spr[SPR_SDR1] = value; #if defined(TARGET_PPC64) - if (env->mmu_model & POWERPC_MMU_64) { - target_ulong htabsize = value & SDR_64_HTABSIZE; + if (env->mmu_model & POWERPC_MMU_64) { + target_ulong htabsize = value & SDR_64_HTABSIZE; - if (htabsize > 28) { - fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx - " stored in SDR1\n", htabsize); - htabsize = 28; - } - env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1; - env->htab_base = value & SDR_64_HTABORG; - } else -#endif /* defined(TARGET_PPC64) */ - { - /* FIXME: Should check for valid HTABMASK values */ - env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF; - env->htab_base = value & SDR_32_HTABORG; + if (htabsize > 28) { + fprintf(stderr, "Invalid HTABSIZE 0x" TARGET_FMT_lx + " stored in SDR1\n", htabsize); + htabsize = 28; } - tlb_flush(CPU(cpu), 1); + env->htab_mask = (1ULL << (htabsize + 18 - 7)) - 1; + env->htab_base = value & SDR_64_HTABORG; + } else +#endif /* defined(TARGET_PPC64) */ + { + /* FIXME: Should check for valid HTABMASK values */ + env->htab_mask = ((value & SDR_32_HTABMASK) << 16) | 0xFFFF; + env->htab_base = value & SDR_32_HTABORG; } }