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=-5.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 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 639E0C4363C for ; Wed, 7 Oct 2020 07:22:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E114720797 for ; Wed, 7 Oct 2020 07:22:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="FBwDcZ54" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727624AbgJGHWO (ORCPT ); Wed, 7 Oct 2020 03:22:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726041AbgJGHWN (ORCPT ); Wed, 7 Oct 2020 03:22:13 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1F38C061755; Wed, 7 Oct 2020 00:22:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=S9jCLowV89NVKZECycX9j1APfco3OP0R5c0bpu/+tdw=; b=FBwDcZ54+M5RpkohwVNDVWYCsQ X6ybcPgQuCfyWuiYzYfgpuN974LhQa3c7bzRFq2QmB8khLwVYgO4xZIO6P5O/bpgoAd9614SbWb38 g81xz508rYU2EFIzGnWBEy8ypc7YxK5RdtM7VkbhTq0V65GjSOKJ5L2+1/o0LHrYANEP+LkUXWcZe NrIVqcTazgsjmSydDvctREayr+AhuHd0BzNwy4EFiGjaMLkF3ZgxhbJSjDi51vsvPJC+BHV0rf+uG 5WCUhF58CfKhiGapQEe+woB992VjI6xjDeQSAS95VcBWx73qS30T6ZodF8Fdvf5QKu64ZN5G2Op+r lZSRCTuA==; Received: from dyn-229.woodhou.se ([90.155.92.229]) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kQ3m5-00037g-Uy; Wed, 07 Oct 2020 07:22:10 +0000 Message-ID: Subject: Re: [PATCH 08/13] genirq: Add irq_domain_set_affinity() From: David Woodhouse To: Thomas Gleixner , x86@kernel.org Cc: iommu , kvm , linux-hyperv@vger.kernel.org, Paolo Bonzini Date: Wed, 07 Oct 2020 08:22:08 +0100 In-Reply-To: <87imbn59d6.fsf@nanos.tec.linutronix.de> References: <77e64f977f559412f62b467fd062d051ea288f14.camel@infradead.org> <20201005152856.974112-1-dwmw2@infradead.org> <20201005152856.974112-8-dwmw2@infradead.org> <87imbn59d6.fsf@nanos.tec.linutronix.de> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-uz+n5DkHtlQQrpuUVWOW" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org Archived-At: List-Archive: List-Post: --=-uz+n5DkHtlQQrpuUVWOW Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2020-10-06 at 23:32 +0200, Thomas Gleixner wrote: > What the heck? Why does this need a setter function which is exported? > So that random driver writers can fiddle with it? >=20 > The affinity mask restriction of an irq domain is already known when the > domain is created. It's exported because __irq_domain_add is exported. I didn't want to just add a rarely-used extra argument to __irq_domain_add and the other public APIs which call into it, and figured a separate setter function was the simplest option. I can rework to add the argument to __irq_domain_add if you prefer. Or we can declare that restricted affinity *isn't* something that IRQ domains provided by modules can have, and just not export the setter function? --=-uz+n5DkHtlQQrpuUVWOW Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCECow ggUcMIIEBKADAgECAhEA4rtJSHkq7AnpxKUY8ZlYZjANBgkqhkiG9w0BAQsFADCBlzELMAkGA1UE BhMCR0IxGzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgG A1UEChMRQ09NT0RPIENBIExpbWl0ZWQxPTA7BgNVBAMTNENPTU9ETyBSU0EgQ2xpZW50IEF1dGhl bnRpY2F0aW9uIGFuZCBTZWN1cmUgRW1haWwgQ0EwHhcNMTkwMTAyMDAwMDAwWhcNMjIwMTAxMjM1 OTU5WjAkMSIwIAYJKoZIhvcNAQkBFhNkd213MkBpbmZyYWRlYWQub3JnMIIBIjANBgkqhkiG9w0B AQEFAAOCAQ8AMIIBCgKCAQEAsv3wObLTCbUA7GJqKj9vHGf+Fa+tpkO+ZRVve9EpNsMsfXhvFpb8 RgL8vD+L133wK6csYoDU7zKiAo92FMUWaY1Hy6HqvVr9oevfTV3xhB5rQO1RHJoAfkvhy+wpjo7Q 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