From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: xen/arm and swiotlb-xen: possible data corruption Date: Thu, 2 Mar 2017 14:39:55 -0800 (PST) Message-ID: References: <20170302083837.GB23726@toto> <20170302085332.GU9606@toto> <06e91a8f-f31d-b016-afdd-c6ef28800b87@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cjZOJ-0004F7-Dj for xen-devel@lists.xenproject.org; Thu, 02 Mar 2017 22:40:07 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Julien Grall Cc: "Edgar E. Iglesias" , "Edgar E. Iglesias" , nd@arm.com, Stefano Stabellini , xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org T24gVGh1LCAyIE1hciAyMDE3LCBKdWxpZW4gR3JhbGwgd3JvdGU6Cj4gSGkgU3RlZmFubywKPiAK PiBPbiAwMi8wMy8xNyAxOToxMiwgU3RlZmFubyBTdGFiZWxsaW5pIHdyb3RlOgo+ID4gT24gVGh1 LCAyIE1hciAyMDE3LCBKdWxpZW4gR3JhbGwgd3JvdGU6Cj4gPiA+IE9uIDAyLzAzLzE3IDA4OjUz LCBFZGdhciBFLiBJZ2xlc2lhcyB3cm90ZToKPiA+ID4gPiBPbiBUaHUsIE1hciAwMiwgMjAxNyBh dCAwOTozODozN0FNICswMTAwLCBFZGdhciBFLiBJZ2xlc2lhcyB3cm90ZToKPiA+ID4gPiA+IE9u IFdlZCwgTWFyIDAxLCAyMDE3IGF0IDA1OjA1OjIxUE0gLTA4MDAsIFN0ZWZhbm8gU3RhYmVsbGlu aSB3cm90ZToKPiA+IEp1bGllbiwgZnJvbSBsb29raW5nIGF0IHRoZSB0d28gZGlmZnMsIHRoaXMg aXMgc2ltcGxlciBhbmQgbmljZXIsIGJ1dCBpZgo+ID4geW91IGxvb2sgYXQgeGVuL2luY2x1ZGUv YXNtLWFybS9wYWdlLmgsIG15IHBhdGNoIG1hZGUKPiA+IGNsZWFuX2RjYWNoZV92YV9yYW5nZSBj b25zaXN0ZW50IHdpdGggaW52YWxpZGF0ZV9kY2FjaGVfdmFfcmFuZ2UuIEZvcgo+ID4gY29uc2lz dGVuY3ksIEkgd291bGQgcHJlZmVyIHRvIGRlYWwgd2l0aCB0aGUgdHdvIGZ1bmN0aW9ucyB0aGUg c2FtZSB3YXkuCj4gPiBBbHRob3VnaCBpdCBpcyBub3QgYSBzcGVjIHJlcXVpcmVtZW50LCBJIGFs c28gdGhpbmsgdGhhdCBpdCBpcyBhIGdvb2QKPiA+IGlkZWEgdG8gaXNzdWUgY2FjaGUgZmx1c2hl cyBmcm9tIGNhY2hlbGluZSBhbGlnbmVkIGFkZHJlc3NlcywgbGlrZQo+ID4gaW52YWxpZGF0ZV9k Y2FjaGVfdmFfcmFuZ2UgZG9lcyBhbmQgTGludXggZG9lcywgdG8gbWFrZSBtb3JlIG9idmlvdXMK PiA+IHdoYXQgaXMgZ29pbmcgb24uCj4gCj4gaW52YWxpZF9kY2FjaGVfdmFfcmFuZ2UgaXMgc3Bs aXQgYmVjYXVzZSB0aGUgY2FjaGUgaW5zdHJ1Y3Rpb24gZGlmZmVycyBmb3IgdGhlCj4gc3RhcnQg YW5kIGVuZCBpZiB1bmFsaWduZWQuIEZvciB0aGVtIHlvdSB3YW50IHRvIHVzZSBjbGVhbiAmIGlu dmFsaWRhdGUgcmF0aGVyCj4gdGhhbiBpbnZhbGlkYXRlLgo+IAo+IElmIHlvdSBsb29rIGF0IHRo ZSBpbXBsZW1lbnRhdGlvbiBvZiBvdGhlciBjYWNoZSBoZWxwZXJzIGluIExpbnV4IChzZWUKPiBk Y2FjaGVfYnlfbGluZV9vcCBpbiBhcmNoL2FybTY0L2luY2x1ZGUvYXNtL2Fzc2VtYmxlci5oKSwg dGhleSB3aWxsIG9ubHkgYWxpZ24KPiBzdGFydCAmIGVuZC4KCkkgZG9uJ3QgdGhpbmsgc28sIHVu bGVzcyBJIGFtIHJlYWRpbmcgZGNhY2hlX2J5X2xpbmVfb3Agd3JvbmcuCgoKPiBBbHNvLCB0aGUg aW52YWxpZF9kY2FjaGVfdmFfcmFuZ2UgaXMgdXNpbmcgbW9kdWxvIHdoaWNoIEkgd291bGQgcmF0 aGVyIGF2b2lkLgo+IFRoZSBtb2R1bG8gaW4gdGhpcyBjYXNlIHdpbGwgbm90IGJlIG9wdGltaXpl ZCBieSB0aGUgY29tcGlsZXIgYmVjYXVzZQo+IGNhY2hlbGluZV9ieXRlcyBpcyBub3QgYSBjb25z dGFudC4KClRoYXQgaXMgYSBnb29kIHBvaW50LiBXaGF0IGlmIEkgcmVwbGFjZSB0aGUgbW9kdWxv IG9wIHdpdGgKCiAgcCAmIChjYWNoZWxpbmVfYnl0ZXMgLSAxKQoKaW4gaW52YWxpZGF0ZV9kY2Fj aGVfdmFfcmFuZ2UsIHRoZW4gYWRkIHRoZSBzaW1pbGFyIGNvZGUgdG8KY2xlYW5fZGNhY2hlX3Zh X3JhbmdlIGFuZCBjbGVhbl9hbmRfaW52YWxpZGF0ZV9kY2FjaGVfdmFfcmFuZ2U/CgoKPiBCVFcs IHlvdSB3b3VsZCBhbHNvIG5lZWQgdG8gZml4IGNsZWFuX2FuZF9pbnZhbGlkYXRlX2RjYWNoZV92 YV9yYW5nZS4KCkknbGwgZG8gdGhhdCwgdGhhbmtzIGZvciB0aGUgcmVtaW5kZXIuCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGlu ZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4t ZGV2ZWwK