From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (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 AF7DF10798 for ; Sun, 24 Mar 2024 20:46:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711313169; cv=none; b=Kc/e/g/qLxEw1S/JL4TXGbPi/cxFZVmXF0CXi73xKeLm3uYL+dJYNK0E0HOT+QJ9vIZePBzsfRTuUbWOiKMwrDYpv6LgYMkQv8xCSkxmB1JaJWdHaRXQlH/Fk7lqJ4pfucBz5RhmdO3ZTpirqZ6tCxyexaZE96lzziB/rIzaEuY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711313169; c=relaxed/simple; bh=MCjCSIh0iLTHQHvN3SjD4xTY4dgF7DwugQkcHwECOBw=; h=MIME-Version:Date:Content-Type:From:Message-ID:Subject:To:Cc: In-Reply-To:References; b=MZBo9bbWSuywfZe6pIErrhSZjXQYhMfGL2sTy1cP05KN2hAHFJLe9cEi6I84d/qx1aQoVykdBOjbBq6YqImUzwb+0edOx67ZYwyx35Dh7VdlVmLyNo36vtXgdqMU+NiJUE9AKyhqxmUXCAw3iiLYVQQoCXNH7eegUduvKGLRPu0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=craftyguy.net; spf=pass smtp.mailfrom=craftyguy.net; dkim=pass (2048-bit key) header.d=craftyguy.net header.i=@craftyguy.net header.b=XNq14Ihd; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=craftyguy.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=craftyguy.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=craftyguy.net header.i=@craftyguy.net header.b="XNq14Ihd" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=craftyguy.net; s=key1; t=1711313163; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=MCjCSIh0iLTHQHvN3SjD4xTY4dgF7DwugQkcHwECOBw=; b=XNq14IhdFh+pMAu22hBXdHvFh/f5vXmY46TWf9h6rIcaKC37poFot6k0lmM0E/oixiBI45 Y1hbgCgIt4+eya2SGW6iKxFcQi7bsJEN6S2OrUOcOo8gQgkGT9VPLqOvQb9ZF7T4IBzORn 8TnFAecbrlBIjGLON++wu5USWWyMzUASamDcVcymn3xm3fFiCldchFfLfnyJTNdDdeWcpS MTNHi++bmZTsVKWgPw/90EaOX4edYs9mQAKfiWAQOuGAZg+Q7v6Ikp/v5jBGYEFsKml/zF AeKxKTZrAzd0CRzRS79FPbrjUXSihJBmvmOTuzmSqDNz8Sge8b/8+ziIGvtsTA== Date: Sun, 24 Mar 2024 20:45:59 +0000 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: "Clayton Craft" Message-ID: <749b1cea4fd9e8d8debadc51cf3c0374d9878ae9@craftyguy.net> TLS-Required: No Subject: Re: x86_64 32-bit EFI mixed mode boot broken To: "Ard Biesheuvel" , "Hans de Goede" Cc: x86@kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "Dave Hansen" , regressions@lists.linux.dev In-Reply-To: References: <20240321150510.GI8211@craftyguy.net> X-Migadu-Flow: FLOW_OUT March 24, 2024 at 10:43 AM, "Ard Biesheuvel" wrote: > Thanks. >=20 >=20I pushed another branch >=20 >=20https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/log/?h= =3Defi-clayton-3 >=20 >=20which has a proper fix for the issue that you found. >=20 >=20As it turns out, the compat mixed mode (with handover protocol) was >=20 >=20broken from the beginning, and the change you identified just happene= d >=20 >=20to trigger it on your hardware. Tested and fixes booting on my Bay Trail tablet and NUC. Thanks for fixin= g this! Tested-by: Clayton Craft -Clayton