From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (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 45B1016A95F for ; Mon, 19 Aug 2024 12:23:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.38.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724070198; cv=none; b=d/JgPh0rLiJs+1QaRF7ilDEdSm3Fu1hc88oFAK+0jXBp1ioQK+5R95KOypYDQSpsI/y0b1ACJYPPvUFHu8NL/dR/sgSkflKUu0EnONtFRrxLuxWCih5PWwBaxK3BIlNZxqxrG7zEHQlDVx+B3ujs7Os5qQLvelZS8CTA7K7o/Bo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724070198; c=relaxed/simple; bh=AFyw/l0hm8vgO2srvQ6jG2c0miCzxBtFECLxt3Kq7Mc=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=VD1BowK3HsYds5pqyBL00rWWMG0TRcu0MTCqwByLNuwwZOF/X23dH5P8LELyn1mMqgfU667ds6D9N0B0nxbovi6EMjOxmPbEoD1e9UA4UmDqZGQQBOuRBRjzePO47bCvpg/lGSIuNRb81AZdDV+W6kx/92uK69F8//4IcRghSeE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net; spf=pass smtp.mailfrom=sipsolutions.net; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b=R0uFvPtf; arc=none smtp.client-ip=168.119.38.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="R0uFvPtf" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=DXZ9OYYdz38AQ8gXsqwwGM7UvJTsd4FhVUqGMHaS2z4=; t=1724070196; x=1725279796; b=R0uFvPtfLa9w0P4IyGXsLWbcxemgzR6x6dHIfyFwjeLv+iH RUTp4010bxTxMO1XNxYfBX21NnodGhHDeOdjiKwridZnncTrS0U630IlMoAnG4lPFUBRrPMR+rsKn C8+fLy8oKLReFDvdt5vbhWzYGapjVXGbvwqZPFENbPN+GQNVJiyy/Y5W7Y+QbLHKJE25iwSlfnFPu ZU4tBVhshUi3hwddRUIEnTO0TEbFo5RbVLEtX7mBR0r9+QJuoIiX0zDhg8z9oS7a6K0eqUqCsrx+d K0bCu0XqdTEGjet2DHXhA8I4wE0++M6QzjwZwEJTiFcJnnTTKPnSWqFEmOF62lig==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.97) (envelope-from ) id 1sg1Pl-00000007YDs-0Y6D; Mon, 19 Aug 2024 14:23:13 +0200 Message-ID: Subject: Re: [PATCH] um: make personality(PER_LINUX32) work on x86_64 From: Johannes Berg To: Maciej =?UTF-8?Q?=C5=BBenczykowski?= , Maciej =?UTF-8?Q?=C5=BBenczykowski?= Cc: Linux Kernel Mailing List , Richard Weinberger , Anton Ivanov , linux-um@lists.infradead.org Date: Mon, 19 Aug 2024 14:23:12 +0200 In-Reply-To: <20240813234755.3615697-1-maze@google.com> References: <20240813234755.3615697-1-maze@google.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 (3.52.4-1.fc40) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-malware-bazaar: not-scanned On Tue, 2024-08-13 at 16:47 -0700, Maciej =C5=BBenczykowski wrote: > Without this patch: > #!/usr/bin/python3 > import ctypes > import os > personality =3D ctypes.CDLL(None).personality > personality.restype =3D ctypes.c_int > personality.argtypes =3D [ctypes.c_ulong] > PER_LINUX32=3D8 > personality(PER_LINUX32) > print(os.uname().machine) > returns: > x86_64 > instead of the desired: > i686 >=20 But ... why should it work? UML has no 32-bit compat support anyway. johannes