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 3571DC678D9 for ; Wed, 11 Jan 2023 10:05:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238294AbjAKKEz (ORCPT ); Wed, 11 Jan 2023 05:04:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239475AbjAKKDu (ORCPT ); Wed, 11 Jan 2023 05:03:50 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0C8CBDFEA; Wed, 11 Jan 2023 02:00:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=MIME-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=QTPVTKNqATKtQW82I4C8pCyzH/+bIzUEXeJ6Ghw5pok=; b=P3kcRxE7uzo+Y8dmUu/iJrK7hl F8osY8n0VaDEt2J7x4qBbijTBIWKJO2362zN+eZ1WVjg+nc0z3pim5m5VGIYfiuLovCRyHZ1bZeed b2y4kSw1J/x2MCWfWs03QJPo7bwKwvy2X56W4EDJvNEvfLNperiG6Y3y0vOjSaqxD3qQnXn2FlSmA Ej8vbmSY7sDXWvxuD8feT8IYJ4HphQ0M5jfFCUHj5sgXWJp7F1F5NajARqcFpJRlDogNXzJ8GgVaS Al2e6qISqxRSGJoECde9WfgDX1Z3ueZRCkIqVaTgF+i/wHGWKihxhXgYzXlB3XxOGZtKfAMr3Mph3 zGoFDBbg==; Received: from [2001:8b0:10b:5::bb3] (helo=u3832b3a9db3152.infradead.org) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFXuq-00419Q-AI; Wed, 11 Jan 2023 10:01:04 +0000 Message-ID: <477edcdff6507e35793c1cb9a97101d01425cff9.camel@infradead.org> Subject: Re: [PATCH v7 2/2] KVM: x86/xen: update Xen CPUID Leaf 4 (tsc info) sub-leaves, if present From: David Woodhouse To: Paul Durrant , x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org Cc: Sean Christopherson , Paolo Bonzini , Juergen Gross , Boris Ostrovsky , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Date: Wed, 11 Jan 2023 10:00:50 +0000 In-Reply-To: <20230106103600.528-3-pdurrant@amazon.com> References: <20230106103600.528-1-pdurrant@amazon.com> <20230106103600.528-3-pdurrant@amazon.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-sPgM3fl2soxIlK/U1gLd" User-Agent: Evolution 3.44.4-0ubuntu1 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-sPgM3fl2soxIlK/U1gLd Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2023-01-06 at 10:36 +0000, Paul Durrant wrote: > The scaling information in subleaf 1 should match the values set by KVM i= n > the 'vcpu_info' sub-structure 'time_info' (a.k.a. pvclock_vcpu_time_info) > which is shared with the guest, but is not directly available to the VMM. > The offset values are not set since a TSC offset is already applied. > The TSC frequency should also be set in sub-leaf 2. >=20 > Signed-off-by: Paul Durrant > --- Reviewed-by: David Woodhouse --=-sPgM3fl2soxIlK/U1gLd Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEkQw 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