From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 030DDC433FE for ; Wed, 23 Nov 2022 16:26:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238344AbiKWQ03 (ORCPT ); Wed, 23 Nov 2022 11:26:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236495AbiKWQ0Z (ORCPT ); Wed, 23 Nov 2022 11:26:25 -0500 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 24EDD8FB0D for ; Wed, 23 Nov 2022 08:26:24 -0800 (PST) Received: by mail-pl1-x62e.google.com with SMTP id w4so8314192plp.1 for ; Wed, 23 Nov 2022 08:26:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=weyg/EsKhyy4CBiAAMLILYT5ImKwyjrbSu91tLtYZGk=; b=ZIJDN0/RCy4xGDYXdthL66Dy9XyzdXzsHB7zbQaiwzyDrljgv/uaiI4EiwDZSc5uX0 ql8XHIPm3enKzNlvf/UGDt3XCIaZFTmm36Vh5AlOsxKfr+viFVDUbZc3LU9jhdvcdv2S RkWstd2BmsYe4pTy12Vw3VyGKlkLaS5ywCG4FvQ6JyeJv2GkwuSUS9l2rhZa+rw6xVaM o8mqDb/tcg0T0YfoROaTDJaGo/sDUXx5pBUEskv4+ANvOLtGseoj/vC9+52UVXaKuPXH NeI0ys96xZz+obSgd5zDnhmt1RqgRx5Fjnd3mQpcACFRoBDzgpeJ9JOAgCwY+sUIDkbb RmAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=weyg/EsKhyy4CBiAAMLILYT5ImKwyjrbSu91tLtYZGk=; b=RTqdbEuZ7EYvrorenIqp+hj56/X1O7z3tFEXxVjak6uyTdE9lzfcAk0tIBW3SgdLyV B7Q3p8bnVnSLFHjZz1AsbodEjmZeT5zNpdnk3xI6fDRd6Kaw8OIbf/VWYmSipK4rHGU9 v8S+ck8tyTn6UHaXmsT1x5OHXAT6nFNzH6GugCG47eC8q23bhWLUQ/QXCF+uczMCXh69 VodEtJqPDlfg/MaHJNUEagB/tTZLjE1zZoJi6bG98sJQEcsbk9PY7krbXSyUbunWC0OZ x+WqBklqqWEGFoA/zCL9jAaiQyLbr0tVqGmIHjmjVE8yh2Ta3b5hF9Nl8pjIv5rD2xyx bdOQ== X-Gm-Message-State: ANoB5pmzMLcy3D8HX1TPc2SmONcib1Ke4MEo2lTwzYkzFjk3w5TLaE0n 7QaOt5iTF3zBYCL+aQHyekRjKZlQB4tq6Q== X-Google-Smtp-Source: AA0mqf5rWYnouBMjh9anhTPkkA+4m52PkLk68/3APCKrN+ZA8E3mcjEk1jmCHwh4unPLj92M6OnlpA== X-Received: by 2002:a17:903:1106:b0:189:528b:7a14 with SMTP id n6-20020a170903110600b00189528b7a14mr1444621plh.62.1669220783542; Wed, 23 Nov 2022 08:26:23 -0800 (PST) Received: from google.com (7.104.168.34.bc.googleusercontent.com. [34.168.104.7]) by smtp.gmail.com with ESMTPSA id x7-20020a170902820700b00186b3c3e2dasm14432484pln.155.2022.11.23.08.26.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Nov 2022 08:26:22 -0800 (PST) Date: Wed, 23 Nov 2022 16:26:19 +0000 From: Sean Christopherson To: David Woodhouse Cc: Paolo Bonzini , Michal Luczaj , kvm@vger.kernel.org Subject: Re: [PATCH 2/3] KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0 Message-ID: References: <20221123002030.92716-1-dwmw2@infradead.org> <20221123002030.92716-2-dwmw2@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221123002030.92716-2-dwmw2@infradead.org> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Nov 23, 2022, David Woodhouse wrote: > From: David Woodhouse > > There are almost no hypercalls which are valid from CPL > 0, and definitely > none which are handled by the kernel. > > Fixes: 2fd6df2f2b47 ("KVM: x86/xen: intercept EVTCHNOP_send from guests") > Reported-by: Michal Luczaj > Signed-off-by: David Woodhouse > Cc: stable@kernel.org > --- Reviewed-by: Sean Christopherson