From nobody Wed May 8 05:04:16 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=quarantine dis=none) header.from=suse.com ARC-Seal: i=1; a=rsa-sha256; t=1618579383; cv=none; d=zohomail.com; s=zohoarc; b=ha+ei2+Q65VrdEODX1dQ8LFHNpha3LmExdplmlRT9OQxQZdS2KZBRn2zzelAtPWpxM4T7jyQh9enZnSUJpqAhLxYUYbT1cO2BSqs0XD99jFYFdW+2Mv951pOUKkpCarsLS1oeuTGGweRZUuccfwfE4KcqDOYxI1qd3QphNTAvig= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1618579383; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Sender:Subject:To; bh=V74WwRMWMSOh03GoTQjxwrPJS93n0Ufbhy6GbCB7rbE=; b=SFPYZBrLagG2zzx3EOI9W8S3oz1j87B+14eGSp+ot/N/LqmWO8EHcaWKip7jSlVygUJrfZ/FQXVf6DPfDP+DQ84DewntI4XvHF7jwjeDXIcsxEfSOAsSYh7SmKRqU15qJOeTMGz6sGJFP/IHFef6+QSTUy4oNtXuT7JhqQfstPA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=quarantine dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1618579383250260.52011398495426; Fri, 16 Apr 2021 06:23:03 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.111736.213702 (Exim 4.92) (envelope-from ) id 1lXOQm-0000SN-V7; Fri, 16 Apr 2021 13:22:44 +0000 Received: by outflank-mailman (output) from mailman id 111736.213702; Fri, 16 Apr 2021 13:22:44 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lXOQm-0000SG-S6; Fri, 16 Apr 2021 13:22:44 +0000 Received: by outflank-mailman (input) for mailman id 111736; Fri, 16 Apr 2021 13:22:44 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lXOQm-0000SA-2r for xen-devel@lists.xenproject.org; Fri, 16 Apr 2021 13:22:44 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 05dbe689-415d-4549-8847-7e2fc4ddd9ae; Fri, 16 Apr 2021 13:22:43 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 54ADDAF4F; Fri, 16 Apr 2021 13:22:42 +0000 (UTC) X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 05dbe689-415d-4549-8847-7e2fc4ddd9ae X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1618579362; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=V74WwRMWMSOh03GoTQjxwrPJS93n0Ufbhy6GbCB7rbE=; b=CpRKwvkT3rjiLYM86zXiAPJgkJ3w0gvBHsCSWMOnovXjd11VfltazG4UsO7dtL+S9a1h/p Amu1rBfX2OzLtF3xF0hYScMoTvhd1i/npkB5swvD1GdJTjVddM+iAG6oVT9OfMzzay+8cB h6in6DZNY6xJlMMPvOC5ik1yvBAAS08= To: "xen-devel@lists.xenproject.org" Cc: Andrew Cooper , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Ian Jackson , Anthony Perard From: Jan Beulich Subject: [PATCH] x86/CPUID: add further "fast repeated string ops" feature flags Message-ID: Date: Fri, 16 Apr 2021 15:22:42 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.1 MIME-Version: 1.0 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @suse.com) Content-Type: text/plain; charset="utf-8" Like ERMS this can always be exposed to guests, but I guess once we introduce full validation we want to make sure we don't reject incoming policies with any of these set when in the raw/host policies they're clear. Signed-off-by: Jan Beulich Reviewed-by: Andrew Cooper --- a/tools/libs/light/libxl_cpuid.c +++ b/tools/libs/light/libxl_cpuid.c @@ -215,6 +215,7 @@ int libxl_cpuid_parse_config(libxl_cpuid =20 {"avx512-4vnniw",0x00000007, 0, CPUID_REG_EDX, 2, 1}, {"avx512-4fmaps",0x00000007, 0, CPUID_REG_EDX, 3, 1}, + {"fsrm", 0x00000007, 0, CPUID_REG_EDX, 4, 1}, {"avx512-vp2intersect",0x00000007,0,CPUID_REG_EDX,8, 1}, {"srbds-ctrl", 0x00000007, 0, CPUID_REG_EDX, 9, 1}, {"md-clear", 0x00000007, 0, CPUID_REG_EDX, 10, 1}, @@ -229,6 +230,9 @@ int libxl_cpuid_parse_config(libxl_cpuid =20 {"avx-vnni", 0x00000007, 1, CPUID_REG_EAX, 4, 1}, {"avx512-bf16", 0x00000007, 1, CPUID_REG_EAX, 5, 1}, + {"fzrm", 0x00000007, 1, CPUID_REG_EAX, 10, 1}, + {"fsrs", 0x00000007, 1, CPUID_REG_EAX, 11, 1}, + {"fsrcs", 0x00000007, 1, CPUID_REG_EAX, 12, 1}, =20 {"lahfsahf", 0x80000001, NA, CPUID_REG_ECX, 0, 1}, {"cmplegacy", 0x80000001, NA, CPUID_REG_ECX, 1, 1}, --- a/tools/misc/xen-cpuid.c +++ b/tools/misc/xen-cpuid.c @@ -177,6 +177,9 @@ static const char *const str_7d0[32] =3D static const char *const str_7a1[32] =3D { [ 4] =3D "avx-vnni", [ 5] =3D "avx512-bf16", + + [10] =3D "fzrm", [11] =3D "fsrs", + [12] =3D "fsrcs", }; =20 static const struct { --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -261,6 +261,7 @@ XEN_CPUFEATURE(SSB_NO, 8*32+26) / /* Intel-defined CPU features, CPUID level 0x00000007:0.edx, word 9 */ XEN_CPUFEATURE(AVX512_4VNNIW, 9*32+ 2) /*A AVX512 Neural Network Instruct= ions */ XEN_CPUFEATURE(AVX512_4FMAPS, 9*32+ 3) /*A AVX512 Multiply Accumulation S= ingle Precision */ +XEN_CPUFEATURE(FSRM, 9*32+ 4) /*A Fast Short REP MOVS */ XEN_CPUFEATURE(AVX512_VP2INTERSECT, 9*32+8) /*a VP2INTERSECT{D,Q} insns */ XEN_CPUFEATURE(SRBDS_CTRL, 9*32+ 9) /* MSR_MCU_OPT_CTRL and RNGDS_MIT= G_DIS. */ XEN_CPUFEATURE(MD_CLEAR, 9*32+10) /*A VERW clears microarchitectural= buffers */ @@ -277,6 +278,9 @@ XEN_CPUFEATURE(SSBD, 9*32+31) / /* Intel-defined CPU features, CPUID level 0x00000007:1.eax, word 10 */ XEN_CPUFEATURE(AVX_VNNI, 10*32+ 4) /*A AVX-VNNI Instructions */ XEN_CPUFEATURE(AVX512_BF16, 10*32+ 5) /*A AVX512 BFloat16 Instructions */ +XEN_CPUFEATURE(FZRM, 10*32+10) /*A Fast Zero-length REP MOVSB */ +XEN_CPUFEATURE(FSRS, 10*32+11) /*A Fast Short REP STOSB */ +XEN_CPUFEATURE(FSRCS, 10*32+12) /*A Fast Short REP CMPSB/SCASB */ =20 #endif /* XEN_CPUFEATURE */ =20