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spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iCJih-00060F-Tf; Mon, 23 Sep 2019 08:29:19 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iCJig-00060A-7r for xen-devel@lists.xenproject.org; Mon, 23 Sep 2019 08:29:18 +0000 X-Inumbo-ID: 3b3c0c23-dddc-11e9-95f6-12813bfff9fa Received: from mx1.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 3b3c0c23-dddc-11e9-95f6-12813bfff9fa; Mon, 23 Sep 2019 08:29:17 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 710A4AFC2; Mon, 23 Sep 2019 08:29:16 +0000 (UTC) From: Jan Beulich To: "xen-devel@lists.xenproject.org" References: Message-ID: <6b9ca7a2-e2c4-5662-7f56-b1cceac75c67@suse.com> Date: Mon, 23 Sep 2019 10:29:15 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US Subject: Re: [Xen-devel] [PATCH v2] libxc/x86: avoid overflow in CPUID APIC ID adjustments X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , Andrew Cooper , Ian Jackson , Wei Liu , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" T24gMjAuMDkuMjAxOSAxNTo1NCwgSmFuIEJldWxpY2ggd3JvdGU6Cj4gUmVjZW50IEFNRCBwcm9j ZXNzb3JzIG1heSByZXBvcnQgdXAgdG8gMTI4IGxvZ2ljYWwgcHJvY2Vzc29ycyBpbiBDUFVJRAo+ IGxlYWYgMS4gRG91YmxpbmcgdGhpcyB2YWx1ZSBwcm9kdWNlcyAwICh3aGljaCBPU2VzIHNpbmNl cmVseSBkaXNsaWtlKSwKPiBhcyB0aGUgcmVzcGVjdGl2ZSBmaWVsZCBpcyBvbmx5IDggYml0cyB3 aWRlLiBTdXBwcmVzcyBkb3VibGluZyB0aGUgdmFsdWUKPiAoYW5kIGl0cyBsZWFmIDB4ODAwMDAw MDggY291bnRlcnBhcnQpIGluIHN1Y2ggYSBjYXNlLgo+IAo+IE5vdGUgdGhhdCB3aGlsZSB0aGVy ZSdzIGEgc2ltaWxhciBvdmVyZmxvdyBpbiBpbnRlbF94Y19jcHVpZF9wb2xpY3koKSwKPiB0aGF0 IG9uZSBpcyBiZWluZyBsZWZ0IGFsb25lIGZvciBub3cuCj4gCj4gTm90ZSBmdXJ0aGVyIHRoYXQg d2hpbGUgaXQgd2FzIGNvbnNpZGVyZWQgdG8gc3VwcHJlc3MgdGhlIG11bHRpcGxpY2F0aW9uCj4g YnkgMiBhbHRvZ2V0aGVyIGlmIHRoZSBob3N0IHRvcG9sb2d5IGFscmVhZHkgcHJvdmlkZXMgYXQg bGVhc3Qgb25lIGJpdAo+IG9mIHRocmVhZCBJRCB3aXRoaW4gQVBJQyBJRHMsIGl0IHdhcyBkZWNp ZGVkIHRvIGF2b2lkIG1vcmUgY2hhbmdlIGhlcmUKPiB0aGFuIHJlYWxseSBuZWVkZWQgYXQgdGhp cyBwb2ludC4KPiAKPiBBbHNvIHphcCBsZWFmIDQgKGFuZCBhdCB0aGUgc2FtZSB0aW1lIGxlYWYg MikgRURYIG91dHB1dCBmb3IgQU1ELCBhcyBpdAo+IHNob3VsZCBoYXZlIGJlZW4gZnJvbSB0aGUg YmVnaW5uaW5nLgo+IAo+IFNpZ25lZC1vZmYtYnk6IEphbiBCZXVsaWNoIDxqYmV1bGljaEBzdXNl LmNvbT4KPiAtLS0KPiB2MjogRHJvcCB1c2Ugb2YgcGh5c2luZm8uIERyb3AgSW50ZWwtb25seSBs ZWFmIDQgY2hhbmdlLiBJbmNyZW1lbnQKPiAgICAgQXBpY0lkQ29yZVNpemUgb25seSB3aGVuIGRv dWJsaW5nIE51bWJlck9mQ29yZXMuCgpUaGlua2luZyBhYm91dCBpdCBzb21lIG1vcmUsIGRyb3Bw aW5nIHRoZSBsZWFmIDQgY2hhbmdlIHNlZW1zIGF0IGxlYXN0CnNvbWV3aGF0IHJpc2t5IHRvIG1l LiBUaGlzIGJlaW5nIGp1c3QgYSA2LWJpdCBmaWVsZCAoYW5kIGVmZmVjdGl2ZWx5CmFscmVhZHkg c2F0dXJhdGluZyBpbiBhIHdheSwgYXQgbGVhc3Qgd2hlbiBwb3dlci1vZi10d28gbWF4aW11bSBj b3JlCmNvdW50cyBhcmUgaW52b2x2ZWQpLCBhbmQgaGVuY2UgdGhlcmUgYmVpbmcgMiBiaXRzIG9m ICJwbGF5aW5nIHJvb20iCmJldHdlZW4gdGhpcyBhbmQgdGhlIGludm9sdmVkIGxlYWYgMSBmaWVs ZCwgdGhlIGNhbGN1bGF0aW9uIHRoZXJlIG5vdApnZXR0aW5nIGFkanVzdGVkIGlzIHN0aWxsIGEg bGF0ZW50IHJpc2sgaW1vIHdpdGggZ3Vlc3Qgc2lkZSBjYWxjdWxhdGlvbnMKbGlrZSB0aGlzIG9u ZQoKCXNtcF9udW1fc2libGluZ3MgPSBzbXBfbnVtX3NpYmxpbmdzIC8gYy0+eDg2X21heF9jb3Jl czsKCmZvdW5kIGluIGJhc2ljYWxseSBhbGwgdmVyc2lvbnMgb2YgTGludXggKHdoZXJlIGNlcnRh aW4gZnVuY3Rpb25zLAplLmcuIGFwaWNfaWRfaXNfcHJpbWFyeV90aHJlYWQoKSwgd29uJ3QgY29w ZSB3aXRoIHNtcF9udW1fc2libGluZ3MKZW5kaW5nIHVwIGFzIHplcm8sIHdoaWxlIG90aGVycywg ZS5nLiB0b3BvbG9neV9zbXRfc3VwcG9ydGVkKCksIGRvKS4KCkphbgoKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApY ZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0cy54ZW5wcm9qZWN0Lm9y Zy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA==