From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 B96EC19992C; Thu, 7 May 2026 07:49:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778140183; cv=none; b=YgCtdBTk6m/q/m0+a1UEXIftYxxTyHUYi5gVZ2wI/NQbCpnsMUVgw8fkg6pND7oISvH/Lz2z3mG3fcqay/P9SacjmNApSc6bneRabiC5i+biWE2DaYO1P8W+58Ya/zHwDA9P2T0caY1QVZ3omSlqRU1eZC9tTXjUS4w58ezANII= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778140183; c=relaxed/simple; bh=6oJig+EG3g1rxKRjj/IGw1ruhQ/l/cMKOC5/Yc3k8t4=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=TtTrEquIDtnwmrB9cSLT1+vdCXffPsYimcS/zF8sGqS0YHXRwOn1IZib4rXmZRSBUrPcbCznoQrgNvDWI/KmjQteuV5KQJJCN+mpKBMoUDipusnqq8t3cUQmQahnxmUvX45t3ysvpt7AQNmqLROGBrrgsfadBXm4bF5bwpfudy0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=desiato.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=Dbz8sYhJ; arc=none smtp.client-ip=90.155.92.199 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=desiato.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Dbz8sYhJ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=6oJig+EG3g1rxKRjj/IGw1ruhQ/l/cMKOC5/Yc3k8t4=; b=Dbz8sYhJfjzCShdR2z+Ekmm/gy x/yNCyH98nG6O8HxRrgT+VnutsPq2UT8A7K9nHoISGEAOxN9MTcj5uv2Q6PUEri/IA7YcYSlVLjA5 80szBEdDCAkVeloJO6pBfgjMMIxnL1aFbZ3OY8K+WVrjxPoTtDsI0zWWLYKhiaqy7cSJzua4XUbMW yxvtMK7hjEIZufQRt8uaiaZhFR53iW02lkbyqtqQjZzBkCK/qImmyVoJylgTFB8s9g8MsmVz8lyQO SSgyrSl3SU4L2Fpy5S3Arux1jOtlkdetqxoISIvRzypNdrxPfbrHDvLmg0JbWv6TG88LP/Zaljq6Z gq7wn9Qw==; Received: from [172.31.31.148] (helo=u09cd745991455d.ant.amazon.com) by desiato.infradead.org with esmtpsa (Exim 4.99.1 #2 (Red Hat Linux)) id 1wKtU7-00000002px7-2i4b; Thu, 07 May 2026 07:49:28 +0000 Message-ID: Subject: Re: [PATCH v9 00/22] Enable FRED with KVM VMX From: David Woodhouse To: Maciej Wieczor-Retman , Andrew Cooper Cc: Xin Li , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, "Saenz Julienne, Nicolas" , pbonzini@redhat.com, seanjc@google.com, corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, peterz@infradead.org, chao.gao@intel.com, hch@infradead.org, sohil.mehta@intel.com Date: Thu, 07 May 2026 08:49:27 +0100 In-Reply-To: References: <20251026201911.505204-1-xin@zytor.com> <7f93eb25874ddd13a1ad6e3c75785f11041c8b7f.camel@infradead.org> Content-Type: multipart/signed; micalg="sha-256"; protocol="application/pkcs7-signature"; boundary="=-Io5FFnTsJIYq+42nOOvQ" User-Agent: Evolution 3.52.3-0ubuntu1.1 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html --=-Io5FFnTsJIYq+42nOOvQ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2026-05-05 at 22:20 +0200, Maciej Wieczor-Retman wrote: >=20 > I take it you mean dropping the ICEBP selftest test case and just checkin= g INT3 > and INT $0x20? In that case the other two tests pass after a minor change= - > namely in guest_code() the expected_rip needs to be volatile as well. Oth= erwise > there is a RIP mismatch. I don't understand the part about making expected_rip volatile. Are the asm constraints there not correct? If not I'd rather *fix* them than use 'volatile' to paper over it. I can't see the issue though. Can you show the generated asm both with and without it? --=-Io5FFnTsJIYq+42nOOvQ Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCCD9Aw ggSOMIIDdqADAgECAhAOmiw0ECVD4cWj5DqVrT9PMA0GCSqGSIb3DQEBCwUAMGUxCzAJBgNVBAYT AlVTMRUwEwYDVQQKEwxEaWdpQ2VydCBJbmMxGTAXBgNVBAsTEHd3dy5kaWdpY2VydC5jb20xJDAi BgNVBAMTG0RpZ2lDZXJ0IEFzc3VyZWQgSUQgUm9vdCBDQTAeFw0yNDAxMzAwMDAwMDBaFw0zMTEx MDkyMzU5NTlaMEExCzAJBgNVBAYTAkFVMRAwDgYDVQQKEwdWZXJva2V5MSAwHgYDVQQDExdWZXJv a2V5IFNlY3VyZSBFbWFpbCBHMjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMjvgLKj jfhCFqxYyRiW8g3cNFAvltDbK5AzcOaR7yVzVGadr4YcCVxjKrEJOgi7WEOH8rUgCNB5cTD8N/Et GfZI+LGqSv0YtNa54T9D1AWJy08ZKkWvfGGIXN9UFAPMJ6OLLH/UUEgFa+7KlrEvMUupDFGnnR06 aDJAwtycb8yXtILj+TvfhLFhafxroXrflspavejQkEiHjNjtHnwbZ+o43g0/yxjwnarGI3kgcak7 nnI9/8Lqpq79tLHYwLajotwLiGTB71AGN5xK+tzB+D4eN9lXayrjcszgbOv2ZCgzExQUAIt98mre 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