From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: [PATCH v11 01/17] Xen: ACPI: Hide UART used by Xen Date: Wed, 20 Apr 2016 10:39:47 +0100 (BST) Message-ID: References: <1460030614-16112-1-git-send-email-zhaoshenglong@huawei.com> <1460030614-16112-2-git-send-email-zhaoshenglong@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: "Rafael J. Wysocki" Cc: "devicetree@vger.kernel.org" , sstabellini@kernel.org, "Rafael J. Wysocki" , Catalin Marinas , Will Deacon , Linux Kernel Mailing List , xen-devel@lists.xen.org, "open list:ACPI" , julien.grall@arm.com, linux-efi@vger.kernel.org, david.vrabel@citrix.com, Shannon Zhao , peter.huangpeng@huawei.com, Len Brown , "linux-arm-kernel@lists.infradead.org" , Shannon Zhao List-Id: xen-devel@lists.xenproject.org T24gTW9uLCAxOCBBcHIgMjAxNiwgUmFmYWVsIEouIFd5c29ja2kgd3JvdGU6Cj4gT24gVGh1LCBB cHIgNywgMjAxNiBhdCAyOjAzIFBNLCBTaGFubm9uIFpoYW8gPHpoYW9zaGVuZ2xvbmdAaHVhd2Vp LmNvbT4gd3JvdGU6Cj4gPiBGcm9tOiBTaGFubm9uIFpoYW8gPHNoYW5ub24uemhhb0BsaW5hcm8u b3JnPgo+ID4KPiA+IEFDUEkgNi4wIGludHJvZHVjZXMgYSBuZXcgdGFibGUgU1RBTyB0byBsaXN0 IHRoZSBkZXZpY2VzIHdoaWNoIGFyZSB1c2VkCj4gPiBieSBYZW4gYW5kIGNhbid0IGJlIHVzZWQg YnkgRG9tMC4gT24gWGVuIHZpcnR1YWwgcGxhdGZvcm1zLCB0aGUgcGh5c2ljYWwKPiA+IFVBUlQg aXMgdXNlZCBieSBYZW4uIFNvIGhlcmUgaXQgaGlkZXMgVUFSVCBmcm9tIERvbTAuCj4gPgo+ID4g Q0M6ICJSYWZhZWwgSi4gV3lzb2NraSIgPHJqd0Byand5c29ja2kubmV0PiAoc3VwcG9ydGVyOkFD UEkpCj4gPiBDQzogTGVuIEJyb3duIDxsZW5iQGtlcm5lbC5vcmc+IChzdXBwb3J0ZXI6QUNQSSkK PiA+IENDOiBsaW51eC1hY3BpQHZnZXIua2VybmVsLm9yZyAob3BlbiBsaXN0OkFDUEkpCj4gPiBT aWduZWQtb2ZmLWJ5OiBTaGFubm9uIFpoYW8gPHNoYW5ub24uemhhb0BsaW5hcm8ub3JnPgo+IAo+ IEFja2VkLWJ5OiBSYWZhZWwgSi4gV3lzb2NraSA8cmFmYWVsLmoud3lzb2NraUBpbnRlbC5jb20+ CgpJIGFtIGdvaW5nIHRvIGNvbW1pdCBpdCB0byB0aGUgeGVudGlwIHRyZWUsIGlmIHlvdSBwcmVm ZXIgdG8gdGFrZSBpdCBpbgp5b3VyIHRyZWUgcGxlYXNlIGxldCBtZSBrbm93LgoKCj4gPiAtLS0K PiA+ICBkcml2ZXJzL2FjcGkvc2Nhbi5jIHwgNzQgKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKysrKysrKysrKysKPiA+ICAxIGZpbGUgY2hhbmdlZCwgNzQgaW5zZXJ0 aW9ucygrKQo+ID4KPiA+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2FjcGkvc2Nhbi5jIGIvZHJpdmVy cy9hY3BpL3NjYW4uYwo+ID4gaW5kZXggNWYyOGNmNy4uY2ZjNzNmZSAxMDA2NDQKPiA+IC0tLSBh L2RyaXZlcnMvYWNwaS9zY2FuLmMKPiA+ICsrKyBiL2RyaXZlcnMvYWNwaS9zY2FuLmMKPiA+IEBA IC00Niw2ICs0NiwxMyBAQCBERUZJTkVfTVVURVgoYWNwaV9kZXZpY2VfbG9jayk7Cj4gPiAgTElT VF9IRUFEKGFjcGlfd2FrZXVwX2RldmljZV9saXN0KTsKPiA+ICBzdGF0aWMgREVGSU5FX01VVEVY KGFjcGlfaHBfY29udGV4dF9sb2NrKTsKPiA+Cj4gPiArLyoKPiA+ICsgKiBUaGUgVUFSVCBkZXZp Y2UgZGVzY3JpYmVkIGJ5IHRoZSBTUENSIHRhYmxlIGlzIHRoZSBvbmx5IG9iamVjdCB3aGljaCBu ZWVkcwo+ID4gKyAqIHNwZWNpYWwtY2FzaW5nLiBFdmVyeXRoaW5nIGVsc2UgaXMgY292ZXJlZCBi eSBBQ1BJIG5hbWVzcGFjZSBwYXRocyBpbiBTVEFPCj4gPiArICogdGFibGUuCj4gPiArICovCj4g PiArc3RhdGljIHU2NCBzcGNyX3VhcnRfYWRkcjsKPiA+ICsKPiA+ICBzdHJ1Y3QgYWNwaV9kZXBf ZGF0YSB7Cj4gPiAgICAgICAgIHN0cnVjdCBsaXN0X2hlYWQgbm9kZTsKPiA+ICAgICAgICAgYWNw aV9oYW5kbGUgbWFzdGVyOwo+ID4gQEAgLTE0NTMsNiArMTQ2MCw0MSBAQCBzdGF0aWMgaW50IGFj cGlfYWRkX3NpbmdsZV9vYmplY3Qoc3RydWN0IGFjcGlfZGV2aWNlICoqY2hpbGQsCj4gPiAgICAg ICAgIHJldHVybiAwOwo+ID4gIH0KPiA+Cj4gPiArc3RhdGljIGFjcGlfc3RhdHVzIGFjcGlfZ2V0 X3Jlc291cmNlX21lbW9yeShzdHJ1Y3QgYWNwaV9yZXNvdXJjZSAqYXJlcywKPiA+ICsgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgdm9pZCAqY29udGV4dCkKPiA+ICt7 Cj4gPiArICAgICAgIHN0cnVjdCByZXNvdXJjZSAqcmVzID0gY29udGV4dDsKPiA+ICsKPiA+ICsg ICAgICAgaWYgKGFjcGlfZGV2X3Jlc291cmNlX21lbW9yeShhcmVzLCByZXMpKQo+ID4gKyAgICAg ICAgICAgICAgIHJldHVybiBBRV9DVFJMX1RFUk1JTkFURTsKPiA+ICsKPiA+ICsgICAgICAgcmV0 dXJuIEFFX09LOwo+ID4gK30KPiA+ICsKPiA+ICtzdGF0aWMgYm9vbCBhY3BpX2RldmljZV9zaG91 bGRfYmVfaGlkZGVuKGFjcGlfaGFuZGxlIGhhbmRsZSkKPiA+ICt7Cj4gPiArICAgICAgIGFjcGlf c3RhdHVzIHN0YXR1czsKPiA+ICsgICAgICAgc3RydWN0IHJlc291cmNlIHJlczsKPiA+ICsKPiA+ ICsgICAgICAgLyogQ2hlY2sgaWYgaXQgc2hvdWxkIGlnbm9yZSB0aGUgVUFSVCBkZXZpY2UgKi8K PiA+ICsgICAgICAgaWYgKCEoc3Bjcl91YXJ0X2FkZHIgJiYgYWNwaV9oYXNfbWV0aG9kKGhhbmRs ZSwgTUVUSE9EX05BTUVfX0NSUykpKQo+ID4gKyAgICAgICAgICAgICAgIHJldHVybiBmYWxzZTsK PiA+ICsKPiA+ICsgICAgICAgLyoKPiA+ICsgICAgICAgICogVGhlIFVBUlQgZGV2aWNlIGRlc2Ny aWJlZCBpbiBTUENSIHRhYmxlIGlzIGFzc3VtZWQgdG8gaGF2ZSBvbmx5IG9uZQo+ID4gKyAgICAg ICAgKiBtZW1vcnkgcmVzb3VyY2UgcHJlc2VudC4gU28gd2Ugb25seSBsb29rIGZvciB0aGUgZmly c3Qgb25lIGhlcmUuCj4gPiArICAgICAgICAqLwo+ID4gKyAgICAgICBzdGF0dXMgPSBhY3BpX3dh bGtfcmVzb3VyY2VzKGhhbmRsZSwgTUVUSE9EX05BTUVfX0NSUywKPiA+ICsgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICBhY3BpX2dldF9yZXNvdXJjZV9tZW1vcnksICZyZXMpOwo+ ID4gKyAgICAgICBpZiAoQUNQSV9GQUlMVVJFKHN0YXR1cykgfHwgcmVzLnN0YXJ0ICE9IHNwY3Jf dWFydF9hZGRyKQo+ID4gKyAgICAgICAgICAgICAgIHJldHVybiBmYWxzZTsKPiA+ICsKPiA+ICsg ICAgICAgYWNwaV9oYW5kbGVfaW5mbyhoYW5kbGUsICJUaGUgVUFSVCBkZXZpY2UgQCVwYSBpbiBT UENSIHRhYmxlIHdpbGwgYmUgaGlkZGVuXG4iLAo+ID4gKyAgICAgICAgICAgICAgICAgICAgICAg ICZyZXMuc3RhcnQpOwo+ID4gKwo+ID4gKyAgICAgICByZXR1cm4gdHJ1ZTsKPiA+ICt9Cj4gPiAr Cj4gPiAgc3RhdGljIGludCBhY3BpX2J1c190eXBlX2FuZF9zdGF0dXMoYWNwaV9oYW5kbGUgaGFu ZGxlLCBpbnQgKnR5cGUsCj4gPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICB1 bnNpZ25lZCBsb25nIGxvbmcgKnN0YSkKPiA+ICB7Cj4gPiBAQCAtMTQ2Niw2ICsxNTA4LDkgQEAg c3RhdGljIGludCBhY3BpX2J1c190eXBlX2FuZF9zdGF0dXMoYWNwaV9oYW5kbGUgaGFuZGxlLCBp bnQgKnR5cGUsCj4gPiAgICAgICAgIHN3aXRjaCAoYWNwaV90eXBlKSB7Cj4gPiAgICAgICAgIGNh c2UgQUNQSV9UWVBFX0FOWTogICAgICAgICAgICAgLyogZm9yIEFDUElfUk9PVF9PQkpFQ1QgKi8K PiA+ICAgICAgICAgY2FzZSBBQ1BJX1RZUEVfREVWSUNFOgo+ID4gKyAgICAgICAgICAgICAgIGlm IChhY3BpX2RldmljZV9zaG91bGRfYmVfaGlkZGVuKGhhbmRsZSkpCj4gPiArICAgICAgICAgICAg ICAgICAgICAgICByZXR1cm4gLUVOT0RFVjsKPiA+ICsKPiA+ICAgICAgICAgICAgICAgICAqdHlw ZSA9IEFDUElfQlVTX1RZUEVfREVWSUNFOwo+ID4gICAgICAgICAgICAgICAgIHN0YXR1cyA9IGFj cGlfYnVzX2dldF9zdGF0dXNfaGFuZGxlKGhhbmRsZSwgc3RhKTsKPiA+ICAgICAgICAgICAgICAg ICBpZiAoQUNQSV9GQUlMVVJFKHN0YXR1cykpCj4gPiBAQCAtMTkxNiw5ICsxOTYxLDI0IEBAIHN0 YXRpYyBpbnQgYWNwaV9idXNfc2Nhbl9maXhlZCh2b2lkKQo+ID4gICAgICAgICByZXR1cm4gcmVz dWx0IDwgMCA/IHJlc3VsdCA6IDA7Cj4gPiAgfQo+ID4KPiA+ICtzdGF0aWMgdm9pZCBfX2luaXQg YWNwaV9nZXRfc3Bjcl91YXJ0X2FkZHIodm9pZCkKPiA+ICt7Cj4gPiArICAgICAgIGFjcGlfc3Rh dHVzIHN0YXR1czsKPiA+ICsgICAgICAgc3RydWN0IGFjcGlfdGFibGVfc3BjciAqc3Bjcl9wdHI7 Cj4gPiArCj4gPiArICAgICAgIHN0YXR1cyA9IGFjcGlfZ2V0X3RhYmxlKEFDUElfU0lHX1NQQ1Is IDAsCj4gPiArICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIChzdHJ1Y3QgYWNwaV90YWJs ZV9oZWFkZXIgKiopJnNwY3JfcHRyKTsKPiA+ICsgICAgICAgaWYgKEFDUElfU1VDQ0VTUyhzdGF0 dXMpKQo+ID4gKyAgICAgICAgICAgICAgIHNwY3JfdWFydF9hZGRyID0gc3Bjcl9wdHItPnNlcmlh bF9wb3J0LmFkZHJlc3M7Cj4gPiArICAgICAgIGVsc2UKPiA+ICsgICAgICAgICAgICAgICBwcmlu dGsoS0VSTl9XQVJOSU5HIFBSRUZJWCAiU1RBTyB0YWJsZSBwcmVzZW50LCBidXQgU1BDUiBpcyBt aXNzaW5nXG4iKTsKPiA+ICt9Cj4gPiArCj4gPiAgaW50IF9faW5pdCBhY3BpX3NjYW5faW5pdCh2 b2lkKQo+ID4gIHsKPiA+ICAgICAgICAgaW50IHJlc3VsdDsKPiA+ICsgICAgICAgYWNwaV9zdGF0 dXMgc3RhdHVzOwo+ID4gKyAgICAgICBzdHJ1Y3QgYWNwaV90YWJsZV9zdGFvICpzdGFvX3B0cjsK PiA+Cj4gPiAgICAgICAgIGFjcGlfcGNpX3Jvb3RfaW5pdCgpOwo+ID4gICAgICAgICBhY3BpX3Bj aV9saW5rX2luaXQoKTsKPiA+IEBAIC0xOTM0LDYgKzE5OTQsMjAgQEAgaW50IF9faW5pdCBhY3Bp X3NjYW5faW5pdCh2b2lkKQo+ID4KPiA+ICAgICAgICAgYWNwaV9zY2FuX2FkZF9oYW5kbGVyKCZn ZW5lcmljX2RldmljZV9oYW5kbGVyKTsKPiA+Cj4gPiArICAgICAgIC8qCj4gPiArICAgICAgICAq IElmIHRoZXJlIGlzIFNUQU8gdGFibGUsIGNoZWNrIHdoZXRoZXIgaXQgbmVlZHMgdG8gaWdub3Jl IHRoZSBVQVJUCj4gPiArICAgICAgICAqIGRldmljZSBpbiBTUENSIHRhYmxlLgo+ID4gKyAgICAg ICAgKi8KPiA+ICsgICAgICAgc3RhdHVzID0gYWNwaV9nZXRfdGFibGUoQUNQSV9TSUdfU1RBTywg MCwKPiA+ICsgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgKHN0cnVjdCBhY3BpX3RhYmxl X2hlYWRlciAqKikmc3Rhb19wdHIpOwo+ID4gKyAgICAgICBpZiAoQUNQSV9TVUNDRVNTKHN0YXR1 cykpIHsKPiA+ICsgICAgICAgICAgICAgICBpZiAoc3Rhb19wdHItPmhlYWRlci5sZW5ndGggPiBz aXplb2Yoc3RydWN0IGFjcGlfdGFibGVfc3RhbykpCj4gPiArICAgICAgICAgICAgICAgICAgICAg ICBwcmludGsoS0VSTl9JTkZPIFBSRUZJWCAiU1RBTyBOYW1lIExpc3Qgbm90IHlldCBzdXBwb3J0 ZWQuIik7Cj4gPiArCj4gPiArICAgICAgICAgICAgICAgaWYgKHN0YW9fcHRyLT5pZ25vcmVfdWFy dCkKPiA+ICsgICAgICAgICAgICAgICAgICAgICAgIGFjcGlfZ2V0X3NwY3JfdWFydF9hZGRyKCk7 Cj4gPiArICAgICAgIH0KPiA+ICsKPiA+ICAgICAgICAgbXV0ZXhfbG9jaygmYWNwaV9zY2FuX2xv Y2spOwo+ID4gICAgICAgICAvKgo+ID4gICAgICAgICAgKiBFbnVtZXJhdGUgZGV2aWNlcyBpbiB0 aGUgQUNQSSBuYW1lc3BhY2UuCj4gPiAtLQo+ID4gMi4wLjQKPiA+Cj4gPgo+ID4gLS0KPiA+IFRv IHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBsaW5lICJ1bnN1YnNjcmliZSBs aW51eC1hY3BpIiBpbgo+ID4gdGhlIGJvZHkgb2YgYSBtZXNzYWdlIHRvIG1ham9yZG9tb0B2Z2Vy Lmtlcm5lbC5vcmcKPiA+IE1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5l bC5vcmcvbWFqb3Jkb21vLWluZm8uaHRtbAo+IAoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlz dHMueGVuLm9yZwpodHRwOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK