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 6859BC433FE for ; Fri, 21 Oct 2022 08:22:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229918AbiJUIWG (ORCPT ); Fri, 21 Oct 2022 04:22:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59096 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230186AbiJUIVO (ORCPT ); Fri, 21 Oct 2022 04:21:14 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EBB8718E2AB for ; Fri, 21 Oct 2022 01:21:08 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 7D1642293C; Fri, 21 Oct 2022 08:21:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1666340466; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uX9o9PYJhdJZeUz3Er72UTs/X4+CPAFUfI3wOc5u00g=; b=Gwulg3eDAvYZL60xX8YC8AYdK/Y+3fT2EYVzsutcMyfhdoqktFypfC8dxYcag/ObZW62Fg dal3bLbIxfkzbvHy9fxKnqWut3e4Sv/FYsjcHadRZLbCMpitJS5J0Nj5M9yjiux/uUHPYk SfYexHwrzaYTBn43EEYeG/tzWYKjpII= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 26F9C1331A; Fri, 21 Oct 2022 08:21:06 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id rPgECHJWUmObUQAAMHmgww (envelope-from ); Fri, 21 Oct 2022 08:21:06 +0000 Message-ID: <6eb2c033-ea00-8015-fe4f-0438f9790b77@suse.com> Date: Fri, 21 Oct 2022 10:21:05 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2 Subject: Re: [PATCH] x86/xen: simplify sysenter and syscall setup Content-Language: en-US To: Andrew Cooper , Borislav Petkov Cc: "linux-kernel@vger.kernel.org" , "x86@kernel.org" , Boris Ostrovsky , Thomas Gleixner , Ingo Molnar , Dave Hansen , "H. Peter Anvin" , "xen-devel@lists.xenproject.org" , "Peter Zijlstra (Intel)" References: <20221020113619.17204-1-jgross@suse.com> From: Juergen Gross In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------WavFKfeHApFt8Lp6zKlzfJ03" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------WavFKfeHApFt8Lp6zKlzfJ03 Content-Type: multipart/mixed; boundary="------------uP38kK7JYLb5sWnjgN4evDg9"; protected-headers="v1" From: Juergen Gross To: Andrew Cooper , Borislav Petkov Cc: "linux-kernel@vger.kernel.org" , "x86@kernel.org" , Boris Ostrovsky , Thomas Gleixner , Ingo Molnar , Dave Hansen , "H. Peter Anvin" , "xen-devel@lists.xenproject.org" , "Peter Zijlstra (Intel)" Message-ID: <6eb2c033-ea00-8015-fe4f-0438f9790b77@suse.com> Subject: Re: [PATCH] x86/xen: simplify sysenter and syscall setup References: <20221020113619.17204-1-jgross@suse.com> In-Reply-To: --------------uP38kK7JYLb5sWnjgN4evDg9 Content-Type: multipart/mixed; boundary="------------NsylYV4bbPiEAniRCNr0uGoi" --------------NsylYV4bbPiEAniRCNr0uGoi Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMjEuMTAuMjIgMTA6MDYsIEFuZHJldyBDb29wZXIgd3JvdGU6DQo+IE9uIDIwLzEwLzIw MjIgMTI6MzksIEJvcmlzbGF2IFBldGtvdiB3cm90ZToNCj4+IE9uIFRodSwgT2N0IDIwLCAy MDIyIGF0IDAxOjM2OjE5UE0gKzAyMDAsIEp1ZXJnZW4gR3Jvc3Mgd3JvdGU6DQo+Pj4geGVu X2VuYWJsZV9zeXNlbnRlcigpIGFuZCB4ZW5fZW5hYmxlX3N5c2NhbGwoKSBjYW4gYmUgc2lt cGxpZmllZCBhIGxvdC4NCj4+Pg0KPj4+IFNpZ25lZC1vZmYtYnk6IEp1ZXJnZW4gR3Jvc3Mg PGpncm9zc0BzdXNlLmNvbT4NCj4+PiAtLS0NCj4+PiAgIGFyY2gveDg2L3hlbi9zZXR1cC5j IHwgMjMgKysrKysrLS0tLS0tLS0tLS0tLS0tLS0NCj4+PiAgIDEgZmlsZSBjaGFuZ2VkLCA2 IGluc2VydGlvbnMoKyksIDE3IGRlbGV0aW9ucygtKQ0KPj4+DQo+Pj4gZGlmZiAtLWdpdCBh L2FyY2gveDg2L3hlbi9zZXR1cC5jIGIvYXJjaC94ODYveGVuL3NldHVwLmMNCj4+PiBpbmRl eCBjZmE5OWU4ZjA1NGIuLjBmMzNlZDZkM2E3YiAxMDA2NDQNCj4+PiAtLS0gYS9hcmNoL3g4 Ni94ZW4vc2V0dXAuYw0KPj4+ICsrKyBiL2FyY2gveDg2L3hlbi9zZXR1cC5jDQo+Pj4gQEAg LTkxMCwxNyArOTEwLDkgQEAgc3RhdGljIGludCByZWdpc3Rlcl9jYWxsYmFjayh1bnNpZ25l ZCB0eXBlLCBjb25zdCB2b2lkICpmdW5jKQ0KPj4+ICAgDQo+Pj4gICB2b2lkIHhlbl9lbmFi bGVfc3lzZW50ZXIodm9pZCkNCj4+PiAgIHsNCj4+PiAtCWludCByZXQ7DQo+Pj4gLQl1bnNp Z25lZCBzeXNlbnRlcl9mZWF0dXJlOw0KPj4+IC0NCj4+PiAtCXN5c2VudGVyX2ZlYXR1cmUg PSBYODZfRkVBVFVSRV9TWVNFTlRFUjMyOw0KPj4+IC0NCj4+PiAtCWlmICghYm9vdF9jcHVf aGFzKHN5c2VudGVyX2ZlYXR1cmUpKQ0KPj4+IC0JCXJldHVybjsNCj4+PiAtDQo+Pj4gLQly ZXQgPSByZWdpc3Rlcl9jYWxsYmFjayhDQUxMQkFDS1RZUEVfc3lzZW50ZXIsIHhlbl9lbnRy eV9TWVNFTlRFUl9jb21wYXQpOw0KPj4+IC0JaWYocmV0ICE9IDApDQo+Pj4gLQkJc2V0dXBf Y2xlYXJfY3B1X2NhcChzeXNlbnRlcl9mZWF0dXJlKTsNCj4+PiArCWlmIChib290X2NwdV9o YXMoWDg2X0ZFQVRVUkVfU1lTRU5URVIzMikgJiYNCj4+IENhbiB5b3Ugc3dpdGNoIHRoYXQg YW5kIGJlbG93IHRvIGNwdV9mZWF0dXJlX2VuYWJsZWQoKSB3aGlsZSBhdCBpdCwgcGxzPw0K PiANCj4gV2h5Pw0KPiANCj4gVGhpcyBmdW5jdGlvbiAoc2hvdWxkKSBiZSBjYWxsZWQgb24g dGhlIEJTUCBvbmx5IChiZWNhdXNlIFhlbidzIEFQSSBsZXRzDQo+IHRoaXMgYmUgc3BlY2lm aWVkIHdoZW4gc3RhcnRpbmcgQVBzKS4NCg0KTm8sIHRoaXMgaXMgdHJ1ZSBmb3IgdGhlIHN5 c2NhbGwgY2FsbGJhY2sgb25seS4gdGhlIHN5c2VudGVyIGFuZCB0aGUgc3lzY2FsbDMyDQpj YWxsYmFja3MgY2FuIG9ubHkgYmUgc2V0IHZpYSBYZW4gdG9vbHMgb3Igb24gdGhlIGxvY2Fs IGNwdSBieSByZWdpc3RlcmluZy4NCg0KPiANCj4gV2hldGhlciBpdCdzIG9uY2UsIG9yIG9u ZSBwZXIgY3B1LCBpdCBkb2Vzbid0IG1hdHRlci4NCg0KSXQgZG9lcy4NCg0KDQpKdWVyZ2Vu DQo= --------------NsylYV4bbPiEAniRCNr0uGoi Content-Type: application/pgp-keys; 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