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 6DABFC77B7C for ; Thu, 4 May 2023 10:32:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230056AbjEDKcG (ORCPT ); Thu, 4 May 2023 06:32:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229757AbjEDKcD (ORCPT ); Thu, 4 May 2023 06:32:03 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E666A4684; Thu, 4 May 2023 03:32:01 -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-out2.suse.de (Postfix) with ESMTPS id 7EE3A209F6; Thu, 4 May 2023 10:32:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1683196320; 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=SysVoVEKW+NX4qyVGu/niFlwGn5aiW8M5/2sd3Frq6w=; b=juSzgQlFlUDuBImH9ZJN/4cvnNQiKW1CsIfyP7OnP0w5p0L5JLGR4eMvuerD53YtoDxppF iCPh2YubO9R5cvjksS70oKLJ4ICxj2GC8yaeouEoRVXZdyQ6AV7PLoLgCnqQ5JJ9R9/XXD TURNTorKdCr0S6/Vh9F0rphyrPDr8dI= 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 7C1EE133F7; Thu, 4 May 2023 10:31:59 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id sf/UHJ+JU2ShewAAMHmgww (envelope-from ); Thu, 04 May 2023 10:31:59 +0000 Message-ID: Date: Thu, 4 May 2023 12:31:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH RFC 16/43] x86-64: Use per-cpu stack canary if supported by compiler Content-Language: en-US To: Hou Wenlong , linux-kernel@vger.kernel.org Cc: Thomas Garnier , Lai Jiangshan , Kees Cook , Brian Gerst , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andy Lutomirski , Boris Ostrovsky , Darren Hart , Andy Shevchenko , Nathan Chancellor , Nick Desaulniers , Tom Rix , Peter Zijlstra , "Mike Rapoport (IBM)" , Ashok Raj , Rick Edgecombe , Catalin Marinas , Guo Ren , Greg Kroah-Hartman , "Jason A. Donenfeld" , Pawan Gupta , Kim Phillips , David Woodhouse , Josh Poimboeuf , xen-devel@lists.xenproject.org, platform-driver-x86@vger.kernel.org, llvm@lists.linux.dev References: <7cee0c83225ffd8cf8fd0065bea9348f6db3b12a.1682673543.git.houwenlong.hwl@antgroup.com> From: Juergen Gross In-Reply-To: <7cee0c83225ffd8cf8fd0065bea9348f6db3b12a.1682673543.git.houwenlong.hwl@antgroup.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------dy9uFmhcjqIP2UV6JYsq3Ms5" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------dy9uFmhcjqIP2UV6JYsq3Ms5 Content-Type: multipart/mixed; boundary="------------ov0MDEHsfp47A5JSPZkJ0II7"; protected-headers="v1" From: Juergen Gross To: Hou Wenlong , linux-kernel@vger.kernel.org Cc: Thomas Garnier , Lai Jiangshan , Kees Cook , Brian Gerst , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Andy Lutomirski , Boris Ostrovsky , Darren Hart , Andy Shevchenko , Nathan Chancellor , Nick Desaulniers , Tom Rix , Peter Zijlstra , "Mike Rapoport (IBM)" , Ashok Raj , Rick Edgecombe , Catalin Marinas , Guo Ren , Greg Kroah-Hartman , "Jason A. Donenfeld" , Pawan Gupta , Kim Phillips , David Woodhouse , Josh Poimboeuf , xen-devel@lists.xenproject.org, platform-driver-x86@vger.kernel.org, llvm@lists.linux.dev Message-ID: Subject: Re: [PATCH RFC 16/43] x86-64: Use per-cpu stack canary if supported by compiler References: <7cee0c83225ffd8cf8fd0065bea9348f6db3b12a.1682673543.git.houwenlong.hwl@antgroup.com> In-Reply-To: <7cee0c83225ffd8cf8fd0065bea9348f6db3b12a.1682673543.git.houwenlong.hwl@antgroup.com> --------------ov0MDEHsfp47A5JSPZkJ0II7 Content-Type: multipart/mixed; boundary="------------AE0inQaMWfJGKdJPNCVK0Np8" --------------AE0inQaMWfJGKdJPNCVK0Np8 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMjguMDQuMjMgMTE6NTAsIEhvdSBXZW5sb25nIHdyb3RlOg0KPiBGcm9tOiBCcmlhbiBH ZXJzdCA8YnJnZXJzdEBnbWFpbC5jb20+DQo+IA0KPiBGcm9tOiBCcmlhbiBHZXJzdCA8YnJn ZXJzdEBnbWFpbC5jb20+DQo+IA0KPiBJZiB0aGUgY29tcGlsZXIgc3VwcG9ydHMgaXQsIHVz ZSBhIHN0YW5kYXJkIHBlci1jcHUgdmFyaWFibGUgZm9yIHRoZQ0KPiBzdGFjayBwcm90ZWN0 b3IgaW5zdGVhZCBvZiB0aGUgb2xkIGZpeGVkIGxvY2F0aW9uLiAgS2VlcCB0aGUgZml4ZWQN Cj4gbG9jYXRpb24gY29kZSBmb3IgY29tcGF0aWJpbGl0eSB3aXRoIG9sZGVyIGNvbXBpbGVy cy4NCj4gDQo+IFtIb3UgV2VubG9uZzogRGlzYWJsZSBpdCBvbiBDbGFuZywgYWRhcHQgbmV3 IGNvZGUgY2hhbmdlIGFuZCBhZGFwdA0KPiBtaXNzaW5nIEdTIHNldCB1cCBwYXRoIGluIHB2 aF9zdGFydF94ZW4oKV0NCj4gDQo+IFNpZ25lZC1vZmYtYnk6IEJyaWFuIEdlcnN0IDxicmdl cnN0QGdtYWlsLmNvbT4NCj4gQ28tZGV2ZWxvcGVkLWJ5OiBIb3UgV2VubG9uZyA8aG91d2Vu bG9uZy5od2xAYW50Z3JvdXAuY29tPg0KPiBTaWduZWQtb2ZmLWJ5OiBIb3UgV2VubG9uZyA8 aG91d2VubG9uZy5od2xAYW50Z3JvdXAuY29tPg0KPiBDYzogVGhvbWFzIEdhcm5pZXIgPHRo Z2FybmllQGNocm9taXVtLm9yZz4NCj4gQ2M6IExhaSBKaWFuZ3NoYW4gPGppYW5nc2hhbi5s anNAYW50Z3JvdXAuY29tPg0KPiBDYzogS2VlcyBDb29rIDxrZWVzY29va0BjaHJvbWl1bS5v cmc+DQo+IC0tLQ0KPiAgIGFyY2gveDg2L0tjb25maWcgICAgICAgICAgICAgICAgICAgICAg fCAxMiArKysrKysrKysrKysNCj4gICBhcmNoL3g4Ni9NYWtlZmlsZSAgICAgICAgICAgICAg ICAgICAgIHwgMjEgKysrKysrKysrKysrKystLS0tLS0tDQo+ICAgYXJjaC94ODYvZW50cnkv ZW50cnlfNjQuUyAgICAgICAgICAgICB8ICA2ICsrKysrLQ0KPiAgIGFyY2gveDg2L2luY2x1 ZGUvYXNtL3Byb2Nlc3Nvci5oICAgICAgfCAxNyArKysrKysrKysrKystLS0tLQ0KPiAgIGFy Y2gveDg2L2luY2x1ZGUvYXNtL3N0YWNrcHJvdGVjdG9yLmggfCAxNiArKysrKysrLS0tLS0t LS0tDQo+ICAgYXJjaC94ODYva2VybmVsL2FzbS1vZmZzZXRzXzY0LmMgICAgICB8ICAyICst DQo+ICAgYXJjaC94ODYva2VybmVsL2NwdS9jb21tb24uYyAgICAgICAgICB8IDE1ICsrKysr KystLS0tLS0tLQ0KPiAgIGFyY2gveDg2L2tlcm5lbC9oZWFkXzY0LlMgICAgICAgICAgICAg fCAxNiArKysrKysrKysrLS0tLS0tDQo+ICAgYXJjaC94ODYva2VybmVsL3ZtbGludXgubGRz LlMgICAgICAgICB8ICA0ICsrKy0NCj4gICBhcmNoL3g4Ni9wbGF0Zm9ybS9wdmgvaGVhZC5T ICAgICAgICAgIHwgIDggKysrKysrKysNCj4gICBhcmNoL3g4Ni94ZW4veGVuLWhlYWQuUyAg ICAgICAgICAgICAgIHwgMTQgKysrKysrKysrLS0tLS0NCj4gICAxMSBmaWxlcyBjaGFuZ2Vk LCA4OCBpbnNlcnRpb25zKCspLCA0MyBkZWxldGlvbnMoLSkNCj4gDQoNCi4uLg0KDQo+IGRp ZmYgLS1naXQgYS9hcmNoL3g4Ni94ZW4veGVuLWhlYWQuUyBiL2FyY2gveDg2L3hlbi94ZW4t aGVhZC5TDQo+IGluZGV4IDY0M2QwMjkwMGZiYi4uMDllYWY1OWU4MDY2IDEwMDY0NA0KPiAt LS0gYS9hcmNoL3g4Ni94ZW4veGVuLWhlYWQuUw0KPiArKysgYi9hcmNoL3g4Ni94ZW4veGVu LWhlYWQuUw0KPiBAQCAtNTEsMTUgKzUxLDE5IEBAIFNZTV9DT0RFX1NUQVJUKHN0YXJ0dXBf eGVuKQ0KPiAgIA0KPiAgIAlsZWFxCShfX2VuZF9pbml0X3Rhc2sgLSBQVFJFR1NfU0laRSko JXJpcCksICVyc3ANCj4gICANCj4gLQkvKiBTZXQgdXAgJWdzLg0KPiAtCSAqDQo+IC0JICog VGhlIGJhc2Ugb2YgJWdzIGFsd2F5cyBwb2ludHMgdG8gZml4ZWRfcGVyY3B1X2RhdGEuICBJ ZiB0aGUNCj4gLQkgKiBzdGFjayBwcm90ZWN0b3IgY2FuYXJ5IGlzIGVuYWJsZWQsIGl0IGlz IGxvY2F0ZWQgYXQgJWdzOjQwLg0KPiArCS8qDQo+ICsJICogU2V0IHVwIEdTIGJhc2UuDQo+ ICAgCSAqIE5vdGUgdGhhdCwgb24gU01QLCB0aGUgYm9vdCBjcHUgdXNlcyBpbml0IGRhdGEg c2VjdGlvbiB1bnRpbA0KPiAgIAkgKiB0aGUgcGVyIGNwdSBhcmVhcyBhcmUgc2V0IHVwLg0K PiAgIAkgKi8NCj4gICAJbW92bAkkTVNSX0dTX0JBU0UsJWVjeA0KPiAtCW1vdnEJJElOSVRf UEVSX0NQVV9WQVIoZml4ZWRfcGVyY3B1X2RhdGEpLCVyYXgNCj4gKyNpZiBkZWZpbmVkKENP TkZJR19TVEFDS1BST1RFQ1RPUl9GSVhFRCkNCj4gKwlsZWFxCUlOSVRfUEVSX0NQVV9WQVIo Zml4ZWRfcGVyY3B1X2RhdGEpKCVyaXApLCAlcmR4DQo+ICsjZWxpZiBkZWZpbmVkKENPTkZJ R19TTVApDQo+ICsJbW92YWJzCSRfX3Blcl9jcHVfbG9hZCwgJXJkeA0KDQpTaG91bGRuJ3Qg YWJvdmUgMiB0YXJnZXRzIGJlICVyYXg/DQoNCj4gKyNlbHNlDQo+ICsJeG9ybAklZWF4LCAl ZWF4DQo+ICsjZW5kaWYNCj4gICAJY2RxDQo+ICAgCXdybXNyDQo+ICAgDQoNCg0KSnVlcmdl bg0K --------------AE0inQaMWfJGKdJPNCVK0Np8 Content-Type: application/pgp-keys; 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