From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f43.google.com (mail-pj1-f43.google.com [209.85.216.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B3EBF4CB2B; Tue, 28 May 2024 05:33:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716874429; cv=none; b=FB5GcojGsuhh2ZeXV5QquGB9L2hgp3+ov6wj3Q0sohE3/TmP7BU7ew42qmEjXYX3esD1kRiFKh2Ji4zjIENrUSdVO+9tLpqgKSJMr/RU3QUnYZJNzt9rdjYb/CVQD8nRdSP1fIqHcI1K4DMHud1IpinUpOL0XdAs0LI+NtKpvEc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716874429; c=relaxed/simple; bh=s05Frly+jsi9ApRgAMiozaXpR67rihNmFY6csDtyDUg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=HZMRcgMkgBFywdusNm6XuXphOdV8MChpObr5DojqWCwk3N8y1lYfEZxzyMdr1+kPO8y3e3r6twJKwRZZokG3XbHJg8gNopuckEYs+Y7o2G9TJ/osmDUEz1nO/IzT1Ch+izV1jiqfQrRod0m00nv01C8IGfyJmvpycUctOcgapj8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.216.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pj1-f43.google.com with SMTP id 98e67ed59e1d1-2bdf446f3d1so310283a91.3; Mon, 27 May 2024 22:33:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716874428; x=1717479228; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=fN6LRL+FsIHhjPUj0yA5DeMxhwLzqKe44DGJ+zjen+s=; b=FuKzAXX8Vb05v+iLQYGXBfVDgT4/3h2s/pUrtLJrg5e5HRpl54dFk84G3wPL56YQch G7K6Ib2aAbpD/BEQ5apV/LDStqT1nEds2FRcLFBTDuKy1gkJV/JFD05HdoxmoxkfVNH9 SmZ4ukMvv1XqJDbR0J/thrldqufjq2QV4cmY23R7sqHx4m5Vlz9Ip7ev5/CJA8Yn0a2u lWq1vy+RCUixcIALrqaMj+SjfHenc6BvbXnz5T477jEJHjkARIrMogP32bb6M2Dtl5s6 u18Um7HsnyFOQPfCKoiLrbk64TLx+KLTc4imjgmlEZ/DCZhTFfsx0PgOB16O00grchXQ BFBw== X-Forwarded-Encrypted: i=1; AJvYcCVRHfKn7JqD7LhQNPAiiJ3XlPMc1xRBPmTMm9O71SMYiOkoNWuQgE5WQTmZLkZHN6/vsU7GOOYzMaVxj7dMqcVmByUn75fO1NKr1ZpHo7LAnLtqmAvlfjauHGyohZUPZ34zSSeRR0eiOG7Y X-Gm-Message-State: AOJu0YyqC7SgP0vOQJ3Knregzc7N8l7+6Rjep0UkW8SvgVYXCklOAQEs oDb+46Vi4ju/iX0wwFkAVJPvT+UD6Jk/wxT/KEmc4DtMbb7pVa// X-Google-Smtp-Source: AGHT+IHse1I9e6UDY482/9q4rxCeoBsLH1h8sqxmlnuIt2y7ohHDp0RwxMIzcOm0aIibGNazirrQgg== X-Received: by 2002:a17:90a:d143:b0:2c0:11d4:b2e0 with SMTP id 98e67ed59e1d1-2c011d4b31bmr354237a91.34.1716874428096; Mon, 27 May 2024 22:33:48 -0700 (PDT) Received: from liuwe-devbox-debian-v2 ([20.69.120.36]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2bdd9ed2cc7sm8835972a91.3.2024.05.27.22.33.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 May 2024 22:33:47 -0700 (PDT) Date: Tue, 28 May 2024 05:33:46 +0000 From: Wei Liu To: "Kirill A. Shutemov" Cc: Sean Christopherson , Paolo Bonzini , Dave Hansen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Josh Poimboeuf , Peter Zijlstra , linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org Subject: Re: [PATCH 06/20] x86/tdx: Convert MSR write handling to use new TDVMCALL_0() Message-ID: References: <20240517141938.4177174-1-kirill.shutemov@linux.intel.com> <20240517141938.4177174-7-kirill.shutemov@linux.intel.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240517141938.4177174-7-kirill.shutemov@linux.intel.com> On Fri, May 17, 2024 at 05:19:24PM +0300, Kirill A. Shutemov wrote: > Use newly introduced TDVMCALL_0() instead of __tdx_hypercall() to handle > MSR write emulation. > > It cuts code bloat substantially: > > Function old new delta > tdx_handle_virt_exception 1947 1819 -128 > > Signed-off-by: Kirill A. Shutemov > --- > arch/x86/coco/tdx/tdx.c | 9 ++------- > arch/x86/hyperv/ivm.c | 9 ++------- Acked-by: Wei Liu