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dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59756 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kD4rb-0003tO-Pm for qemu-devel@archiver.kernel.org; Tue, 01 Sep 2020 07:54:11 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47916) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kD4qk-0003Fd-UN for qemu-devel@nongnu.org; Tue, 01 Sep 2020 07:53:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:60928) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kD4qj-0002su-5g for qemu-devel@nongnu.org; Tue, 01 Sep 2020 07:53:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1598961195; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0tGkEbbK8tdGNXIXWDxYnxATTDsewwQ+W9h16itPFo4=; b=gtkKeYXCvp5PVaq2GoDNj4teeV60sruZMhVYjHkdXEEYck4kKgIq0XzwQcJqq59OpfJ7nH STwYQX8DE+bnbbIRUXYnPB2fcEQzbK/aX2MK3lkImyiWTXeMe/gVC7IbKgNKc1ybH5gdnt uCHD+5Af0Sd7795+FxFb2nwr4TgIZKo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-546-izG32lE3P-aEf6kihzH8mQ-1; Tue, 01 Sep 2020 07:53:12 -0400 X-MC-Unique: izG32lE3P-aEf6kihzH8mQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E1DC8CCE72; Tue, 1 Sep 2020 11:52:53 +0000 (UTC) Received: from imammedo-mac (unknown [10.40.193.201]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5702D5C22B; Tue, 1 Sep 2020 11:52:52 +0000 (UTC) Date: Tue, 1 Sep 2020 13:52:49 +0200 From: Igor Mammedov To: Babu Moger Subject: Re: [PATCH v6 09/10] i386: Simplify CPUID_8000_001E for AMD Message-ID: <20200901135249.22db38e1@imammedo-mac> In-Reply-To: <159889938099.21294.9493474163204060713.stgit@naples-babu.amd.com> References: <159889924378.21294.16494070903874534542.stgit@naples-babu.amd.com> <159889938099.21294.9493474163204060713.stgit@naples-babu.amd.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=imammedo@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=imammedo@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/31 23:17:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, mst@redhat.com, qemu-devel@nongnu.org, pbonzini@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Mon, 31 Aug 2020 13:43:01 -0500 Babu Moger wrote: > Remove all the hardcoded values and replace with generalized > fields. > > Signed-off-by: Babu Moger > --- > target/i386/cpu.c | 31 +++++++++++++++++-------------- > 1 file changed, 17 insertions(+), 14 deletions(-) > > diff --git a/target/i386/cpu.c b/target/i386/cpu.c > index ba4667b33c..d434c8545a 100644 > --- a/target/i386/cpu.c > +++ b/target/i386/cpu.c > @@ -395,9 +395,10 @@ static int cores_in_core_complex(int nr_cores) > } > > /* Encode cache info for CPUID[8000001D] */ > -static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs, > - uint32_t *eax, uint32_t *ebx, > - uint32_t *ecx, uint32_t *edx) > +static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, > + X86CPUTopoInfo *topo_info, > + uint32_t *eax, uint32_t *ebx, > + uint32_t *ecx, uint32_t *edx) > { > uint32_t l3_cores; > assert(cache->size == cache->line_size * cache->associativity * > @@ -408,10 +409,12 @@ static void encode_cache_cpuid8000001d(CPUCacheInfo *cache, CPUState *cs, > > /* L3 is shared among multiple cores */ > if (cache->level == 3) { > - l3_cores = cores_in_core_complex(cs->nr_cores); > - *eax |= ((l3_cores * cs->nr_threads) - 1) << 14; > + l3_cores = DIV_ROUND_UP((topo_info->cores_per_die * > + topo_info->threads_per_core), > + topo_info->dies_per_pkg); from spec: " NumSharingCache: number of '''logical processors''' sharing cache. " s/l3_cores/l3_vcpus|l3_threads/ Also why not use just: val = topo_info->cores_per_die * topo_info->threads_per_core > + *eax |= (l3_cores - 1) << 14; > } else { > - *eax |= ((cs->nr_threads - 1) << 14); > + *eax |= ((topo_info->threads_per_core - 1) << 14); > } > > assert(cache->line_size > 0); > @@ -5994,20 +5997,20 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, > } > switch (count) { > case 0: /* L1 dcache info */ > - encode_cache_cpuid8000001d(env->cache_info_amd.l1d_cache, cs, > - eax, ebx, ecx, edx); > + encode_cache_cpuid8000001d(env->cache_info_amd.l1d_cache, > + &topo_info, eax, ebx, ecx, edx); > break; > case 1: /* L1 icache info */ > - encode_cache_cpuid8000001d(env->cache_info_amd.l1i_cache, cs, > - eax, ebx, ecx, edx); > + encode_cache_cpuid8000001d(env->cache_info_amd.l1i_cache, > + &topo_info, eax, ebx, ecx, edx); > break; > case 2: /* L2 cache info */ > - encode_cache_cpuid8000001d(env->cache_info_amd.l2_cache, cs, > - eax, ebx, ecx, edx); > + encode_cache_cpuid8000001d(env->cache_info_amd.l2_cache, > + &topo_info, eax, ebx, ecx, edx); > break; > case 3: /* L3 cache info */ > - encode_cache_cpuid8000001d(env->cache_info_amd.l3_cache, cs, > - eax, ebx, ecx, edx); > + encode_cache_cpuid8000001d(env->cache_info_amd.l3_cache, > + &topo_info, eax, ebx, ecx, edx); > break; > default: /* end of info */ > *eax = *ebx = *ecx = *edx = 0; >