From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 5A22738228C; Tue, 12 May 2026 21:33:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778621622; cv=none; b=mBULYJS5A7DEx1OPaUwWzN+kyetqTvWKvQCXuPg+YEEanwaCGGAT+u9rOxz+IPYQjdUfyDPS10LMl+P9ixHXNBy3ryce4Sdi+m/xatoFK1Ke3f5glEVeKU2be2l2En+0hwm6gjGJYqjnVsjtO/m7Yz3Oljve0ycl8xCvvmoV5co= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778621622; c=relaxed/simple; bh=Ea2OMLh2G8O2+ZHyDi3qhug0bi+n3sc2g2ey2HR4lJA=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=km84FlToZFcZ5bVfr2yeVZQ2okwd1qKlUHxEn/fXcVDYE1fJ4Y/tk3t5HdDnu/hDj4vAxTm7w1bHRRaVdyfIrmrzRzPqqVGL0NLahwhhDMsbFMafuPQmG5PdGhA5FaivQEMSwQnoWPhM06K55aoQvK9sLHX5RM/yZAqtrfXl78s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=casper.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=p06oBDvW; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=casper.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="p06oBDvW" 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=Ea2OMLh2G8O2+ZHyDi3qhug0bi+n3sc2g2ey2HR4lJA=; b=p06oBDvWKkg6pR91AI6uC0Tajg +i2gxVHy8t23er8St9m6k0W9oUsJss26pfawHUauQ5t4A6xi9nwyogm1SFugO/Dvh7qK4mKAq7Xto lyq6gsAiw+W6u0w60KktGQALbZ8mkCsWuvj+OxMiA0gtu3rfYCBmF5Tyl5ccLSa/y8q3ZlJFc+tB7 TAAQKckwmUb3gKoOKvH6pVmDUSB4JV1wMuFYeONvWRJVJyYHK//WHqpXrxqrQuUdgdtYOwK8GDB7N H43JgrRA94GadIWNcpO6cEHCTYvt+dtOQaSmfkJYSG0upDzLTjzOfcE5gvMupbl4P7aCeh4GDeMeF gKqqfoYw==; Received: from 54-240-197-228.amazon.com ([54.240.197.228] helo=edge-cache-147.e-maa3.amazon.com) by casper.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMuj6-0000000ASvg-0bfJ; Tue, 12 May 2026 21:33:18 +0000 Message-ID: <200cdc7d05df9ce1b99e5806c48ad3b022efba96.camel@infradead.org> Subject: Re: [PATCH] KVM: SVM: Always intercept ICEBP, add INT1 selftests From: David Woodhouse To: Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Shuah Khan , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: Andrew Cooper , "Saenz Julienne, Nicolas" , Maciej Wieczor-Retman Date: Tue, 12 May 2026 22:33:15 +0100 In-Reply-To: <9b76002a-dbd4-4f8f-8279-96ea0ff3966a@redhat.com> References: <9b76002a-dbd4-4f8f-8279-96ea0ff3966a@redhat.com> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-pGkEDEXs8kw5m9bxGdHs" User-Agent: Evolution 3.52.3-0ubuntu1.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html --=-pGkEDEXs8kw5m9bxGdHs Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2026-05-12 at 23:10 +0200, Paolo Bonzini wrote: >=20 > y u no like kvm-unit-tests?=C2=A0 For the task gate test it's much simple= r,=20 > as all the infrastructure for 32-bit IDT and GDT is already there, and= =20 > there is no real KVM corner case being tested. No good reason; I just find the selftests a bit more convenient to run on a barebones test instance, or sometimes even throw in an initramfs and spawn a kernel just to run them. > See=20 > https://lore.kernel.org/r/20260512210847.3039048-1-pbonzini@redhat.com/= =C2=A0 > for a conversion, which is about 1/6th of the size of int1_task_gate_test= .c. --=-pGkEDEXs8kw5m9bxGdHs Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCD9Aw ggSOMIIDdqADAgECAhAOmiw0ECVD4cWj5DqVrT9PMA0GCSqGSIb3DQEBCwUAMGUxCzAJBgNVBAYT AlVTMRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5jb20xJDAi BgNVBAMTG0RpZ2lDZXJ0IEFzc3VyZWQgSUQgUm9vdCBDQTAeFw0yNDAxMzAwMDAwMDBaFw0zMTEx MDkyMzU5NTlaMEExCzAJBgNVBAYTAkFVMRAwDgYDVQQKEwdWZXJva2V5MSAwHgYDVQQDExdWZXJv a2V5IFNlY3VyZSBFbWFpbCBHMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMjvgLKj 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