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 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8388BCDB474 for ; Tue, 17 Oct 2023 21:20:37 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qsrUD-0003Pa-5I; Tue, 17 Oct 2023 17:20:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qsrUA-0003OV-S3 for qemu-devel@nongnu.org; Tue, 17 Oct 2023 17:20:19 -0400 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qsrU5-0002NW-8U for qemu-devel@nongnu.org; Tue, 17 Oct 2023 17:20:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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=54XAuWzYqztzfnivHJHl0zZ8p63OeZefOtsCSd5Zv9o=; b=YP6iIt/NuLsfgN6JrFW3JBqCJb M8X2os6vIbYp0nuBfXj+cYQBl4Iy1D0fLbPRbG2JQBe8EVVl/4+QE/XrOLWkhQnKAN5tupRxjJa6F y4Kot+oQxYi/+nv8PFA87bepX3k3ca9vH4YzPjBE8hisvgZQ75s6GlDqvYVZXHleotKSIurVFOsn2 1H7tDb6HnKdYXEXE5yzQ7xQCP7Jbp4Znktr2CUyRaEILLAOQLuGqHSMFKmPbFp/7rVAklyIEF61n5 Cki80OEUJ+EZguXHgZAWZUbwFDUw5i/KUw2Oq+FSC1etVPqvlV/egtqtK5Vxks+/M07TT/UXQCUFh 6MjMsKBA==; Received: from [2001:8b0:10b:5:b9aa:f92b:5d4c:b38] (helo=u3832b3a9db3152.ant.amazon.com) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1qsrTr-00EaaQ-92; Tue, 17 Oct 2023 21:19:59 +0000 Message-ID: Subject: Re: [PATCH v2] intel-iommu: Report interrupt remapping faults, fix return value From: David Woodhouse To: Peter Xu Cc: Jason Wang , Paolo Bonzini , Richard Henderson , Eduardo Habkost , Marcel Apfelbaum , qemu-devel , "Michael S. Tsirkin" Date: Tue, 17 Oct 2023 22:19:55 +0100 In-Reply-To: References: <31bbfc9041690449d3ac891f4431ec82174ee1b4.camel@infradead.org> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-QkuPxmLE8i107Dc/Zxd1" User-Agent: Evolution 3.44.4-0ubuntu2 MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Received-SPF: none client-ip=2001:8b0:10b:1236::1; envelope-from=BATV+e442e50539a6073fd887+7359+infradead.org+dwmw2@casper.srs.infradead.org; helo=casper.infradead.org X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --=-QkuPxmLE8i107Dc/Zxd1 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, 2023-08-23 at 11:37 -0400, Peter Xu wrote: > On Wed, Aug 23, 2023 at 01:23:25PM +0100, David Woodhouse wrote: > > From: David Woodhouse > >=20 > > A generic X86IOMMUClass->int_remap function should not return VT-d > > specific values; fix it to return 0 if the interrupt was successfully > > translated or -EINVAL if not. > >=20 > > The VTD_FR_IR_xxx values are supposed to be used to actually raise > > faults through the fault reporting mechanism, so do that instead for > > the case where the IRQ is actually being injected. > >=20 > > There is more work to be done here, as pretranslations for the KVM IRQ > > routing table can't fault; an untranslatable IRQ should be handled in > > userspace and the fault raised only when the IRQ actually happens (if > > indeed the IRTE is still not valid at that time). But we can work on > > that later; we can at least raise faults for the direct case. > >=20 > > Signed-off-by: David Woodhouse >=20 > Acked-by: Peter Xu Thanks. What do I do with this next? It's still lurking in my working tree. --=-QkuPxmLE8i107Dc/Zxd1 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCEkQw ggYQMIID+KADAgECAhBNlCwQ1DvglAnFgS06KwZPMA0GCSqGSIb3DQEBDAUAMIGIMQswCQYDVQQG EwJVUzETMBEGA1UECBMKTmV3IEplcnNleTEUMBIGA1UEBxMLSmVyc2V5IENpdHkxHjAcBgNVBAoT FVRoZSBVU0VSVFJVU1QgTmV0d29yazEuMCwGA1UEAxMlVVNFUlRydXN0IFJTQSBDZXJ0aWZpY2F0 aW9uIEF1dGhvcml0eTAeFw0xODExMDIwMDAwMDBaFw0zMDEyMzEyMzU5NTlaMIGWMQswCQYDVQQG EwJHQjEbMBkGA1UECBMSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYDVQQHEwdTYWxmb3JkMRgwFgYD VQQKEw9TZWN0aWdvIExpbWl0ZWQxPjA8BgNVBAMTNVNlY3RpZ28gUlNBIENsaWVudCBBdXRoZW50 aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKC AQEAyjztlApB/975Rrno1jvm2pK/KxBOqhq8gr2+JhwpKirSzZxQgT9tlC7zl6hn1fXjSo5MqXUf ItMltrMaXqcESJuK8dtK56NCSrq4iDKaKq9NxOXFmqXX2zN8HHGjQ2b2Xv0v1L5Nk1MQPKA19xeW 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