From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0882EC2BB48 for ; Wed, 9 Dec 2020 14:02:40 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9522E23B31 for ; Wed, 9 Dec 2020 14:02:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9522E23B31 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 2025587199; Wed, 9 Dec 2020 14:02:39 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1T-LpIU47oNm; Wed, 9 Dec 2020 14:02:35 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id BE7308718B; Wed, 9 Dec 2020 14:02:35 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9E6B9C0893; Wed, 9 Dec 2020 14:02:35 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id CD742C013B for ; Wed, 9 Dec 2020 14:02:33 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id BC6F78753B for ; Wed, 9 Dec 2020 14:02:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id pqmyNdQiwdcH for ; Wed, 9 Dec 2020 14:02:32 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by fraxinus.osuosl.org (Postfix) with ESMTP id BD8E382146 for ; Wed, 9 Dec 2020 14:02:32 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EAFD31FB; Wed, 9 Dec 2020 06:02:31 -0800 (PST) Received: from C02TD0UTHF1T.local (unknown [10.57.26.40]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 067D13F66B; Wed, 9 Dec 2020 06:02:28 -0800 (PST) Date: Wed, 9 Dec 2020 14:02:21 +0000 From: Mark Rutland To: Andy Lutomirski Subject: Re: [PATCH v2 05/12] x86: rework arch_local_irq_restore() to not use popf Message-ID: <20201209140221.GA9087@C02TD0UTHF1T.local> References: <20201120114630.13552-1-jgross@suse.com> <20201120114630.13552-6-jgross@suse.com> <20201120115943.GD3021@hirez.programming.kicks-ass.net> <20201209132710.GA8566@C02TD0UTHF1T.local> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201209132710.GA8566@C02TD0UTHF1T.local> Cc: =?utf-8?B?SsO8cmdlbiBHcm/Dnw==?= , Stefano Stabellini , Peter Zijlstra , X86 ML , LKML , Linux Virtualization , "VMware, Inc." , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , xen-devel , Thomas Gleixner , Boris Ostrovsky X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" T24gV2VkLCBEZWMgMDksIDIwMjAgYXQgMDE6Mjc6MTBQTSArMDAwMCwgTWFyayBSdXRsYW5kIHdy b3RlOgo+IE9uIFN1biwgTm92IDIyLCAyMDIwIGF0IDAxOjQ0OjUzUE0gLTA4MDAsIEFuZHkgTHV0 b21pcnNraSB3cm90ZToKPiA+IE9uIFNhdCwgTm92IDIxLCAyMDIwIGF0IDEwOjU1IFBNIErDvHJn ZW4gR3Jvw58gPGpncm9zc0BzdXNlLmNvbT4gd3JvdGU6Cj4gPiA+IE9uIDIwLjExLjIwIDEyOjU5 LCBQZXRlciBaaWpsc3RyYSB3cm90ZToKPiA+ID4gPiBJZiBzb21lb25lIHdlcmUgdG8gd3JpdGUg aG9ycmlibGUgY29kZSBsaWtlOgo+ID4gPiA+Cj4gPiA+ID4gICAgICAgbG9jYWxfaXJxX2Rpc2Fi bGUoKTsKPiA+ID4gPiAgICAgICBsb2NhbF9pcnFfc2F2ZShmbGFncyk7Cj4gPiA+ID4gICAgICAg bG9jYWxfaXJxX2VuYWJsZSgpOwo+ID4gPiA+ICAgICAgIGxvY2FsX2lycV9yZXN0b3JlKGZsYWdz KTsKPiA+ID4gPgo+ID4gPiA+IHdlJ2QgYmUgdXAgc29tZSBjcmVlayB3aXRob3V0IGEgcGFkZGxl Li4uIG5vdyBJIGRvbid0IF90aGlua18gd2UgaGF2ZQo+ID4gPiA+IGdlbml1cyBjb2RlIGxpa2Ug dGhhdCwgYnV0IEknZCBmZWVsIHNhdmVyIGlmIHdlIGNhbiBoYXogYW4gYXNzZXJ0aW9uIGluCj4g PiA+ID4gdGhlcmUgc29tZXdoZXJlLi4uCgo+IEkgd2FzIGp1c3QgdGFsa2luZyB0byBQZXRlciBv biBJUkMgYWJvdXQgaW1wbGVtZW50aW5nIHRoZSBzYW1lIHRoaW5nIGZvcgo+IGFybTY0LCBzbyBj b3VsZCB3ZSBwdXQgdGhpcyBpbiB0aGUgZ2VuZXJpYyBpcnFmbGFncyBjb2RlPyBJSVVDIHdlIGNh bgo+IHVzZSByYXdfaXJxc19kaXNhYmxlZCgpIHRvIGRvIHRoZSBjaGVjay4KPiAKPiBBcyB0aGlz IGlzbid0IHJlYWxseSBlbnRyeSBzcGVjaWZpYyAoYW5kIElJVUMgdGhlIGNhc2VzIHRoaXMgc2hv dWxkCj4gY2F0Y2ggd291bGQgYnJlYWsgbG9ja2RlcCB0b2RheSksIG1heWJlIHdlIHNob3VsZCBh ZGQgYSBuZXcKPiBERUJVR19JUlFGTEFHUyBmb3IgdGhpcywgdGhhdCBERUJVR19MT0NLREVQIGNh biBhbHNvIHNlbGVjdD8KPiAKPiBTb21ldGhpbmcgbGlrZToKPiAKPiAjZGVmaW5lIGxvY2FsX2ly cV9yZXN0b3JlKGZsYWdzKSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBcCj4gICAgICAg IGRvIHsgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg XAo+ICAgICAgICAgICAgICAgIGlmICghcmF3X2lycXNfZGlzYWJsZWRfZmxhZ3MoZmxhZ3MpKSB7 ICAgICAgICAgIFwKPiAgICAgICAgICAgICAgICAgICAgICAgIHRyYWNlX2hhcmRpcnFzX29uKCk7 ICAgICAgICAgICAgICAgICAgICBcCj4gICAgICAgICAgICAgICAgfSBlbHNlIGlmIChJU19FTkFC TEVEKENPTkZJR19ERUJVR19JUlFGTEFHUykgeyAgXAo+ICAgICAgICAgICAgICAgICAgICAgICAg aWYgKHVubGlrZWx5KHJhd19pcnFzX2Rpc2FibGVkKCkpICAgICAgIFwKCldob29wczsgdGhhdCBz aG91bGQgYmUgIXJhd19pcnFzX2Rpc2FibGVkKCkuCgo+ICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICB3YXJuX2JvZ3VzX2lycXJlc3RvcmUoKTsgICAgICAgIFwKPiAgICAgICAgICAgICAg ICB9ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBcCj4gICAg ICAgICAgICAgICAgcmF3X2xvY2FsX2lycV9yZXN0b3JlKGZsYWdzKTsgICAgICAgICAgICAgICAg ICAgXAo+ICAgICAgICAgfSB3aGlsZSAoMCkKPiAKPiAuLi4gcGVyaGFwcz8gKGlnbm9yaW5nIGhv d2V2ZXIgd2UgZGVhbCB3aXRoIG9uY2UtbmVzcykuCgpJZiBuby1vbmUgc2hvdXRzIGluIHRoZSBu ZXh0IGRheSBvciB0d28gSSdsbCBzcGluIHRoaXMgYXMgaXRzIG93biBwYXRjaC4KCk1hcmsuCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClZpcnR1YWxpemF0 aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXphdGlvbkBsaXN0cy5saW51eC1mb3VuZGF0aW9uLm9y ZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5mby92aXJ0 dWFsaXphdGlvbg==