From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] xen/arm: mm: optimize setup_pagetables Date: Wed, 11 May 2016 10:31:49 +0100 Message-ID: <5732FC05.1020504@arm.com> References: <1462953598-20802-1-git-send-email-van.freenix@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1462953598-20802-1-git-send-email-van.freenix@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Peng Fan , xen-devel@lists.xen.org, sstabellini@kernel.org List-Id: xen-devel@lists.xenproject.org SGkgUGVuZywKCkkgd291bGQgcmVuYW1lIHRoZSB0aXRsZTogInhlbi9hcm06IG1tOiByZW1vdmUg dW5uZWNlc3NhcnkgdGxiIGZsdXNoIGluIApzZXR1cF9wYWdldGFibGVzIi4KCk9uIDExLzA1LzIw MTYgMDg6NTksIFBlbmcgRmFuIHdyb3RlOgo+IEJlZm9yZSByZWxvY2F0aW5nIHhlbiB0byBoaWdo IGFkZHJlc3MsIG5lZWQgdG8gYnVpbGQKPiB0aGUgbWFwcGluZyBCT09UX1JFTE9DX1ZJUlRfU1RB UlQgdG8geGVuX3BhZGRyIGludG8KPiBib290X3BndGFibGUgYW5kIHhlbl9wZ3RhYmxlLgo+Cj4g SW4gc2V0dXBfcGFnZXRhYmxlcywgcmVsb2NhdGVfeGVuIHdpbGwgc3dpdGNoIHRoZSByb290Cj4g cGFnZSB0YWJsZSBmcm9tIGJvb3RfcGd0YWJsZSB0byB4ZW5fcGd0YWJsZS9jcHUwX3BndGFibGUu Cj4KPiBCZWZvcmUgcmVsb2NhdGVfeGVuOgo+IElmIHRvdWNoaW5nIHhlbl9wZ3RhYmxlLCBubyBu ZWVkIHRvIGZsdXNoX3hlbl9kYXRhX3RsYl9yYW5nZV92YV9sb2NhbC4KPiBXZSBvbmx5IG5lZWQg dG8gZmx1c2ggdGxiIHdoZW4gdG91Y2ggYm9vdF9wZ3RhYmxlLgo+IEFuZCBubyBuZWVkIHRvIHVz ZSB3cml0ZV9wdGUgZm9yIHhlbl9wZ3RhYmxlLCB3ZSBjYW4gc2ltcGx5IHVzZQo+ICJ4ZW5fc2Vj b25kW3NlY29uZF90YWJsZV9vZmZzZXQoZGVzdF92YSldID0gcHRlOyIKPgo+IEFsc28gbW92ZSB0 aGUgcGllY2UgY29kZSBuZWFyIERUQi9GaXhtYXAvWEVOX1ZJUlRfU1RBUlQgdG8KPiBiZSBtb3Jl IGVhc2llciB0byB1bmRlcnN0YW5kLgoKVGhlIGNvbW1pdCBtZXNzYWdlIGlzIHJhdGhlciBoYXJk IHRvIHVuZGVyc3RhbmQuIENhbiB5b3UgcGxlYXNlIHJld29yayAKaXQgc2F5OgogICAtIENQVTAg aXMgdXNpbmcgdGhlIGJvb3QgcGFnZXMgdGFibGUgYW5kIHhlbl9zZWNvbmQgaXMgbm90IHBhcnQg b2YgCnRoZW0gPT4gTm8gbmVlZCB0byBmbHVzaCB0aGUgVExCCiAgIC0gQ2xlYW4gdXAgdGhlIGNv ZGUgKGkuZSB0aGUgY29kZSBtb3ZlbWVudCkKCkhvd2V2ZXIsIEkgd291bGQgcHJlZmVyIHRvIHNl ZSAyIHBhdGNoZXMsIG9uZSBmb3IgcmVtb3ZpbmcgdGhlIHRsYiAKZmx1c2gsIHRoZSBvdGhlciB0 byBtb3ZlIHRoZSBjb2RlLgoKWy4uLl0KCj4gZGlmZiAtLWdpdCBhL3hlbi9hcmNoL2FybS9tbS5j IGIveGVuL2FyY2gvYXJtL21tLmMKPiBpbmRleCA5NGVhMDU0Li5iZWJkODJmIDEwMDY0NAo+IC0t LSBhL3hlbi9hcmNoL2FybS9tbS5jCj4gKysrIGIveGVuL2FyY2gvYXJtL21tLmMKPiBAQCAtNDQz LDEyICs0NDMsNiBAQCB2b2lkIF9faW5pdCBzZXR1cF9wYWdldGFibGVzKHVuc2lnbmVkIGxvbmcg Ym9vdF9waHlzX29mZnNldCwgcGFkZHJfdCB4ZW5fcGFkZHIpCj4gICAgICAgbHBhZV90IHB0ZSwg KnA7Cj4gICAgICAgaW50IGk7Cj4KPiAtICAgIC8qIE1hcCB0aGUgZGVzdGluYXRpb24gaW4gdGhl IGJvb3QgbWlzYyBhcmVhLiAqLwo+IC0gICAgZGVzdF92YSA9IEJPT1RfUkVMT0NfVklSVF9TVEFS VDsKPiAtICAgIHB0ZSA9IG1mbl90b194ZW5fZW50cnkoeGVuX3BhZGRyID4+IFBBR0VfU0hJRlQs IFdSSVRFQUxMT0MpOwo+IC0gICAgd3JpdGVfcHRlKHhlbl9zZWNvbmQgKyBzZWNvbmRfdGFibGVf b2Zmc2V0KGRlc3RfdmEpLCBwdGUpOwo+IC0gICAgZmx1c2hfeGVuX2RhdGFfdGxiX3JhbmdlX3Zh X2xvY2FsKGRlc3RfdmEsIFNFQ09ORF9TSVpFKTsKPiAtCj4gICAgICAgLyogQ2FsY3VsYXRlIHZp cnQtdG8tcGh5cyBvZmZzZXQgZm9yIHRoZSBuZXcgbG9jYXRpb24gKi8KPiAgICAgICBwaHlzX29m ZnNldCA9IHhlbl9wYWRkciAtICh1bnNpZ25lZCBsb25nKSBfc3RhcnQ7Cj4KPiBAQCAtNDk4LDYg KzQ5MiwxMSBAQCB2b2lkIF9faW5pdCBzZXR1cF9wYWdldGFibGVzKHVuc2lnbmVkIGxvbmcgYm9v dF9waHlzX29mZnNldCwgcGFkZHJfdCB4ZW5fcGFkZHIpCj4gICAgICAgLyogTWFwIHRoZSBkZXN0 aW5hdGlvbiBpbiB0aGUgYm9vdCBtaXNjIGFyZWEuICovCj4gICAgICAgZGVzdF92YSA9IEJPT1Rf UkVMT0NfVklSVF9TVEFSVDsKPiAgICAgICBwdGUgPSBtZm5fdG9feGVuX2VudHJ5KHhlbl9wYWRk ciA+PiBQQUdFX1NISUZULCBXUklURUFMTE9DKTsKPiArICAgIHhlbl9zZWNvbmRbc2Vjb25kX3Rh YmxlX29mZnNldChkZXN0X3ZhKV0gPSBwdGU7Cj4gKwo+ICsgICAgLyogTWFwIHRoZSBkZXN0aW5h dGlvbiBpbiB0aGUgYm9vdCBtaXNjIGFyZWEuICovCj4gKyAgICBkZXN0X3ZhID0gQk9PVF9SRUxP Q19WSVJUX1NUQVJUOwo+ICsgICAgcHRlID0gbWZuX3RvX3hlbl9lbnRyeSh4ZW5fcGFkZHIgPj4g UEFHRV9TSElGVCwgV1JJVEVBTExPQyk7CgpXaHkgZG8geW91IG5lZWQgdG8gcmVjb21wdXRlICJw dGUiIGFuZCAiZGVzdF92YSI/IFRoZXkgd2lsbCBiZSB0aGUgc2FtZSAKZm9yICJib290X3NlY29u ZCIgYW5kICJ4ZW5fc2Vjb25kIi4KCkFsc28sIEkgdGhpbmsgdGhlIGNvZGUgaXMgc3RpbGwgY29u ZnVzaW5nIGluIHRoZSBjdXJyZW50IHN0YXRlIGJlY2F1c2UgCm9mIHRoZSBjb21tZW50cyAiTWFw IHRoZSBkZXN0aW5hdGlvbiBpbiB0aGUgYm9vdCBtaXNjIGFyZWEuIi4gVGhleSBuZWVkIAp0byBi ZSB1cGRhdGVkIHRvIGRpZmZlcmVudGlhdGUgeGVuX3NlY29uZCB2cyBib290X3NlY29uZC4KCj4g ICAgICAgd3JpdGVfcHRlKGJvb3Rfc2Vjb25kICsgc2Vjb25kX3RhYmxlX29mZnNldChkZXN0X3Zh KSwgcHRlKTsKPiAgICAgICBmbHVzaF94ZW5fZGF0YV90bGJfcmFuZ2VfdmFfbG9jYWwoZGVzdF92 YSwgU0VDT05EX1NJWkUpOwo+ICAgI2lmZGVmIENPTkZJR19BUk1fNjQKPgoKUmVnYXJkcywKCi0t IApKdWxpZW4gR3JhbGwKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbi5vcmcKaHR0 cDovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==