From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Xu, Quan" Subject: Re: [PATCH v2 1/2] IOMMU/spinlock: Fix a bug found in AMD IOMMU initialization. Date: Wed, 9 Mar 2016 12:18:28 +0000 Message-ID: <945CA011AD5F084CBEA3E851C0AB28894B85E1AC@SHSMSX101.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: "dario.faggioli@citrix.com" , "Tian, Kevin" , "suravee.suthikulpanit@amd.com" , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org T24gTWFyY2ggMDksIDIwMTYgNjoxMHBtLCA8amJldWxpY2hAc3VzZS5jb20+IHdyb3RlOgo+ID4+ PiAiWHUsIFF1YW4iIDxxdWFuLnh1QGludGVsLmNvbT4gMDMvMDkvMTYgODozMiBBTSA+Pj4KPiA+ T24gTWFyY2ggMDksIDIwMTYgMToxOXBtLCA8VGlhbiwgS2V2aW4+IHdyb3RlOgo+ID4+ID4gSW5z aWRlIHNldF9pb21tdV9pbnRlcnJ1cHRfaGFuZGxlcigpLCBwY2lkZXZzX2xvY2sgc2VyaWFsaXpl cyBjYWxscwo+ID4+ID4gdG8gcGNpX2dldF9wZGV2KCksIHdoaWNoIGRvZXMgbm90IHJlcXVpcmUg aW50ZXJydXB0cyB0byBiZSBkaXNhYmxlZAo+ID4+ID4gZHVyaW5nIGl0cyBleGVjdXRpb24uIElu IGZhY3QsIHBjaWRldnNfbG9jayBpcyBhbHdheXMgKGV4Y2VwdCBmb3IKPiA+PiA+IHRoaXMKPiA+ PiA+IGNhc2UpIHRha2VuIHdpdGhvdXQgZGlzYWJsaW5nIGludGVycnVwdHMsIGFuZCBkaXNhYmxp bmcgdGhlbSBpbgo+ID4+ID4gdGhpcyBjYXNlIHdvdWxkIG1ha2UgdGhlIEJVR19PTigpIGluIGNo ZWNrX2xvY2soKSB0cmlnZ2VyLCBpZiBpdAo+ID4+ID4gd2Fzbid0IGZvciB0aGUgZmFjdCB0aGF0 IHNwaW5sb2NrIGRlYnVnZ2luZyBjaGVja3MgYXJlIHN0aWxsCj4gPj4gPiBkaXNhYmxlZCwgZHVy aW5nIGluaXRpYWxpemF0aW9uLCB3aGVuIGlvbW11X3NldHVwKCkgKHdoaWNoIHRoZW4gZW5kCj4g Pj4gPiB1cCBjYWxsaW5nCj4gPj4gPiBzZXRfaW9tbXVfaW50ZXJydXB0X2hhbmRsZXIoKSkgaXMg Y2FsbGVkLgo+ID4+Cj4gPj4gVGhlIGtleSBwcm9ibGVtIGlzIHRoYXQgd2UgbmVlZCBjb25zaXN0 ZW50IGxvY2sgdXNhZ2UgaW4gYWxsIHBsYWNlcwo+ID4+IChlaXRoZXIgYWxsIGluIElSUS1zYWZl IG9yIGFsbCBpbiBJUlEtdW5zYWZlKSwgcmVnYXJkbGVzcyBvZiB3aGV0aGVyCj4gPj4gY2hlY2tf bG9jayBpcyBhY3RpdmF0ZWQgb3Igbm90ICh3aGljaCBpcyBqdXN0IGEgZGVidWcgbWV0aG9kIHRv IGhlbHAgaWRlbnRpZnkKPiBzdWNoIGluY29uc2lzdGVuY3kgcHJvYmxlbSkuCj4gPgo+ID5JTU8s IHRoaXMgaXMgbm90IHRoZSBrZXkgcHJvYmxlbSwgIF9fV2FpdCBmb3IgRGFyaW8ncyAvIEphbidz IG9waW5pb25zX18uCj4gCj4gVGhlIGluY29uc2lzdGVuY3kgaXMgb25lIHdheSBvZiBsb29rIGF0 IHRoZSBwcm9ibGVtLCBzbyB3aXRoIHRoYXQgaXQgaXMga2luZCBvZgo+ICJrZXkiLgo+IAoKVGhh bmtzIGZvciBjb3JyZWN0aW5nIG1lLiAKQmVmb3JlIHRoaXMgZW1haWwsIEkgcmVhbGx5IHRoaW5r IGluY29uc2lzdGVuY3kgaXMgb25lIG9mIHRoZSBwcm9ibGVtLCBhbmQKVGhlIGtleSBwcm9ibGVt IGlzIHRoZSBjYXNlIHdvdWxkIG1ha2UgdGhlIEJVR19PTigpIGluIGNoZWNrX2xvY2soKSB0cmln Z2VyLiA6KAoKPiA+PiBIb3dldmVyIHRoZXJlIHJlbWFpbnMgYW4KPiA+PiBleGNlcHRpb24gaW4g QU1EIElPTU1VIGNvZGUsIHdoZXJlIHRoZSBsb2NrIGlzIGFjcXVpcmVkIHdpdGgKPiA+PiBpbnRl cnJ1cHQgZGlzYWJsZWQuIFRoaXMgaW5jb25zaXN0ZW5jeSBjYW4gbGVhZCB0byBkZWFkbG9jay4K PiA+Pgo+ID4+IFRoZSBmaXggaXMgc3RyYWlnaHRmb3J3YXJkIHRvIHVzZSBzcGluX2xvY2sgaW5z dGVhZC4gQWxzbyBpbnRlcnJ1cHQKPiA+PiBoYXMgYmVlbiBlbmFibGVkIHdoZW4gdGhpcyBmdW5j dGlvbiBpcyBpbnZva2VkLCBzbyB3ZSdyZSBzdXJlCj4gPj4gY29uc2lzdGVuY3kgYXJvdW5kIHBj aWRldnNfbG9jayBjYW4gYmUgZ3VhcmFudGVlZCBhZnRlciB0aGlzIGZpeC4KPiA+Cj4gPkkgcmVh bGx5IGFwcHJlY2lhdGUgeW91IHNlbmQgb3V0IGEgcmV2aXNlZCBvbmUsIGJ1dCBJIHRoaW5rIGl0 IGlzIG5vdCBvbmx5IGZvcgo+IGNvbnNpc3RlbmN5Lgo+ID5fX1dhaXQgZm9yIERhcmlvJ3MgLyBK YW4ncyBvcGluaW9uc19fLgo+ID4KPiA+VG8gYmUgaG9uZXN0LCB0byBtZSwgX19teV9jaGFuZ2xv Z18gaXMgY29tcGxpY2F0ZWQuCj4gCj4gSSB0aGluayBLZXZpbidzIHRleHQgYWJvdmUgaXMgb2th eS4gUGVyaGFwcyB3ZWFrZW4gdGhlICJjYW4gbGVhZCB0byBhIGRlYWRsb2NrIgo+IHNsaWdodGx5 LCBiZWNhdXNlIHRoYXQncyBqdXN0IGEgdGhlb3JldGljYWwgY29uY2Vybiwgbm90IG9uZSB0aGF0 J3MgcG9zc2libGUgaW4KPiBwcmFjdGljZSBvbiB0aGF0IGNvZGUgcGF0aC4KClRoYW5rcy4KSSB3 b3VsZCB1c2UgS2V2aW4ncyB0ZXh0IGFib3ZlIGFuZCBjaGFuZ2UgJ2NhbiBsZWFkIHRvIGEgZGVh ZGxvY2snIHRvICdtaWdodCBsZWFkIHRvIGEgZGVhZGxvY2snIGFzIGNoYW5nZWxvZy4KClF1YW4K CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2 ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54ZW4u b3JnL3hlbi1kZXZlbAo=