From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from baidu.com (mx24.baidu.com [111.206.215.185]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 20D5733E7 for ; Tue, 8 Jul 2025 00:24:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=111.206.215.185 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751934292; cv=none; b=jRQc1n/iCSco8jrVXM/64+f5NhjYWGFqnur92ZqHjyLuzViIfnYAHKhy/lYRb42Vx0ol4xv0aW1mXLlfRobV2WHXfZ56yc7Nv3M7oW/0GL8oKFGHMDpZqeBeS82uBK7HZzx9wqGT1B6v8xQHyKXlEpW3oaZdigdmOLP5lpE6OZU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751934292; c=relaxed/simple; bh=hbNvLinM16BrCm6vTJOEcgotGXkSVCqKKKzVL38PnuM=; h=From:To:CC:Subject:Date:Message-ID:References:In-Reply-To: Content-Type:MIME-Version; b=iALuyz+cn5m+Zz7em1l1zuYEBmu1qp15pCfWp+M27KHVD1C2uxWdzqibzHTjJ+/5AfaKPZSZUIE1KztOEIeWTaAhMIOOaXQMR7ohW2I0BXMGlnKzp9ZS8sa7llhifgmSFroLGd1muPA5Q7htSWXXXC2+hidqRDTTyiJNQHz69BU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=baidu.com; spf=pass smtp.mailfrom=baidu.com; arc=none smtp.client-ip=111.206.215.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=baidu.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baidu.com From: "Li,Rongqing" To: Oleg Nesterov , Peter Zijlstra , David Laight CC: "linux-kernel@vger.kernel.org" , "vschneid@redhat.com" , "mgorman@suse.de" , "bsegall@google.com" , "rostedt@goodmis.org" , "dietmar.eggemann@arm.com" , "vincent.guittot@linaro.org" , "juri.lelli@redhat.com" , "mingo@redhat.com" Subject: =?gb2312?B?tPC4tDogWz8/Pz9dIFJlOiBkaXZpZGUgZXJyb3IgaW4geDg2IGFuZCBjcHV0?= =?gb2312?Q?ime?= Thread-Topic: [????] Re: divide error in x86 and cputime Thread-Index: AdvvFOeRwP1XMiJ8Sh6ojy4vzov+4AAM96oAAAC7wQAAEo0PUAACA05w Date: Tue, 8 Jul 2025 00:23:36 +0000 Message-ID: <2b98f7946cd0411ab588ce9b55c2f8e2@baidu.com> References: <78a0d7bb20504c0884d474868eccd858@baidu.com> <20250707220937.GA15787@redhat.com> <20250707223038.GB15787@redhat.com> <2ef88def90634827bac1874d90e0e329@baidu.com> In-Reply-To: <2ef88def90634827bac1874d90e0e329@baidu.com> Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-FEAS-Client-IP: 172.31.50.41 X-FE-Policy-ID: 52:10:53:SYSTEM PiBub24teDg2IHN5c3RlbSBtYXliZSBoYXMgc2FtZSBpc3N1ZSwgb25jZSAoc3RpbWUgKyB1dGlt ZSkgb3ZlcmZsb3dzIDY0Yml0LA0KPiBtdWxfdTY0X3U2NF9kaXZfdTY0IGZyb20gbGliL21hdGgv ZGl2NjQuYyBtYXliZSBjYXVzZSBkaXZpc2lvbiBieSAwDQo+IA0KDQpDb3JyZWN0IHRoaXMsIG11 bF91NjRfdTY0X2Rpdl91NjQoMHg2OWY5OGRhOWJhOTgwYzAwLCAweGZmZmQyMTNhYWJkNzQ2MjYs IDB4MDA5ZTAwOTAwKSBvZmxpYi9tYXRoL2RpdjY0LmMgcmV0dXJucyAweGZmZmZmZmZmZmZmZmZm ZmYNCg0KDQo+IHNvIHRvIGNwdXRpbWUsIGNvdWxkIGNwdXRpbWVfYWRqdXN0KCkgcmV0dXJuIHN0 aW1lIGlmIHN0aW1lIGlmIHN0aW1lICsgdXRpbWUgaXMNCj4gb3ZlcmZsb3cNCj4gDQo+IGRpZmYg LS1naXQgYS9rZXJuZWwvc2NoZWQvY3B1dGltZS5jIGIva2VybmVsL3NjaGVkL2NwdXRpbWUuYyBp bmRleA0KPiA2ZGFiNDg1NC4uZGIwYzI3MyAxMDA2NDQNCj4gLS0tIGEva2VybmVsL3NjaGVkL2Nw dXRpbWUuYw0KPiArKysgYi9rZXJuZWwvc2NoZWQvY3B1dGltZS5jDQo+IEBAIC01NzksNiArNTc5 LDEwIEBAIHZvaWQgY3B1dGltZV9hZGp1c3Qoc3RydWN0IHRhc2tfY3B1dGltZSAqY3Vyciwgc3Ry dWN0DQo+IHByZXZfY3B1dGltZSAqcHJldiwNCj4gICAgICAgICAgICAgICAgIGdvdG8gdXBkYXRl Ow0KPiAgICAgICAgIH0NCj4gDQo+ICsgICAgICAgaWYgKHN0aW1lID4gKHN0aW1lICsgdXRpbWUp KSB7DQo+ICsgICAgICAgICAgICAgICBnb3RvIHVwZGF0ZTsNCj4gKyAgICAgICB9DQo+ICsNCj4g ICAgICAgICBzdGltZSA9IG11bF91NjRfdTY0X2Rpdl91NjQoc3RpbWUsIHJ0aW1lLCBzdGltZSAr IHV0aW1lKTsNCj4gICAgICAgICAvKg0KPiAgICAgICAgICAqIEJlY2F1c2UgbXVsX3U2NF91NjRf ZGl2X3U2NCgpIGNhbiBhcHByb3hpbWF0ZSBvbiBzb21lDQo+IA0KPiANCj4gVGhhbmtzDQo+IA0K PiAtTGkNCj4gDQo+IA0KPiA+IE9sZWcuDQo+ID4NCj4gPiBPbiAwNy8wOCwgT2xlZyBOZXN0ZXJv diB3cm90ZToNCj4gPiA+DQo+ID4gPiBPbiAwNy8wNywgTGksUm9uZ3Fpbmcgd3JvdGU6DQo+ID4g PiA+DQo+ID4gPiA+IFs3ODI1MDgxNS43MDM4NDddIGRpdmlkZSBlcnJvcjogMDAwMCBbIzFdIFBS RUVNUFQgU01QIE5PUFRJDQo+ID4gPg0KPiA+ID4gLi4uDQo+ID4gPg0KPiA+ID4gPiBJdCBjYXVz ZWQgYnkgYSBwcm9jZXNzIHdpdGggbWFueSB0aHJlYWRzIHJ1bm5pbmcgdmVyeSBsb25nLCBhbmQN Cj4gPiA+ID4gdXRpbWUrc3RpbWUgb3ZlcmZsb3dlZCA2NGJpdCwgdGhlbiBjYXVzZSB0aGUgYmVs b3cgZGl2DQo+ID4gPiA+DQo+ID4gPiA+IG11bF91NjRfdTY0X2Rpdl91NjQoMHg2OWY5OGRhOWJh OTgwYzAwLCAweGZmZmQyMTNhYWJkNzQ2MjYsDQo+ID4gPiA+IDB4MDllMDA5MDApOw0KPiA+ID4g Pg0KPiA+ID4gPiBJIHNlZSB0aGUgY29tbWVudHMgb2YgbXVsX3U2NF91NjRfZGl2X3U2NCgpIHNh eToNCj4gPiA+ID4NCj4gPiA+ID4gV2lsbCBnZW5lcmF0ZSBhbiAjREUgd2hlbiB0aGUgcmVzdWx0 IGRvZXNuJ3QgZml0IHU2NCwgY291bGQgZml4DQo+ID4gPiA+IHdpdGggYW4gX19leF90YWJsZVtd IGVudHJ5IHdoZW4gaXQgYmVjb21lcyBhbiBpc3N1DQo+ID4gPiA+DQo+ID4gPiA+IFNlZW0gX19l eF90YWJsZVtdIGVudHJ5IGZvciBkaXYgZG9lcyBub3Qgd29yayA/DQo+ID4gPg0KPiA+ID4gV2Vs bCwgdGhlIGN1cnJlbnQgdmVyc2lvbiBkb2Vzbid0IGhhdmUgYW4gX19leF90YWJsZVtdIGVudHJ5 IGZvciBkaXYuLi4NCj4gPiA+DQo+ID4gPiBJIGRvIG5vdCBrbm93IHdoYXQgY2FuL3Nob3VsZCB3 ZSBkbyBpbiB0aGlzIGNhc2UuLi4gUGVyaGFwcw0KPiA+ID4NCj4gPiA+IAlzdGF0aWMgaW5saW5l IHU2NCBtdWxfdTY0X3U2NF9kaXZfdTY0KHU2NCBhLCB1NjQgbXVsLCB1NjQgZGl2KQ0KPiA+ID4g CXsNCj4gPiA+IAkJaW50IG9rID0gMDsNCj4gPiA+IAkJdTY0IHE7DQo+ID4gPg0KPiA+ID4gCQlh c20gKCJtdWxxICUzOyAxOiBkaXZxICU0OyBtb3ZsICQxLCUxOyAyOlxuIg0KPiA+ID4gCQkJX0FT TV9FWFRBQkxFKDFiLCAyYikNCj4gPiA+IAkJCTogIj1hIiAocSksICIrciIgKG9rKQ0KPiA+ID4g CQkJOiAiYSIgKGEpLCAicm0iIChtdWwpLCAicm0iIChkaXYpDQo+ID4gPiAJCQk6ICJyZHgiKTsN Cj4gPiA+DQo+ID4gPiAJCXJldHVybiBvayA/IHEgOiAtMXVsOw0KPiA+ID4gCX0NCj4gPiA+DQo+ ID4gPiA/DQo+ID4gPg0KPiA+ID4gU2hvdWxkIHJldHVybiBVTExPTkdfTUFYIG9uICNERS4NCj4g PiA+DQo+ID4gPiBPbGVnLg0KDQo=