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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B8AAEF8FA91 for ; Tue, 21 Apr 2026 15:07:27 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DE3D06B0005; Tue, 21 Apr 2026 11:07:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D94AF6B0088; Tue, 21 Apr 2026 11:07:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CB1D46B0089; Tue, 21 Apr 2026 11:07:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id B922A6B0005 for ; Tue, 21 Apr 2026 11:07:26 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 1DD855DEF3 for ; Tue, 21 Apr 2026 15:07:26 +0000 (UTC) X-FDA: 84682891692.18.5FC218D Received: from out-170.mta1.migadu.com (out-170.mta1.migadu.com [95.215.58.170]) by imf12.hostedemail.com (Postfix) with ESMTP id 3E9AF4000D for ; Tue, 21 Apr 2026 15:07:23 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=QE89DUrP; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf12.hostedemail.com: domain of alvin.sun@linux.dev designates 95.215.58.170 as permitted sender) smtp.mailfrom=alvin.sun@linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1776784044; h=from:from:sender: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:dkim-signature; bh=wvD5z3d9+wA7tb/nW8saysrfgp0G4rLi1yg3WlABLYo=; b=tea3BBCAFhDAweYUtkgr2iyUgmUpbqG1VKosQlXY8KeEy4k2SEB+beXFAzyyPwPWQAVhEP 0SX4dce/tlTR/Xag33WR/JepmyBU7Z/E0f+JmT1BS5peDp/U0HvvBbyljrgIIAdyvDpn+7 r61uKlkXHcav66ON5iQi9LVRDrR0O3g= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=QE89DUrP; dmarc=pass (policy=none) header.from=linux.dev; spf=pass (imf12.hostedemail.com: domain of alvin.sun@linux.dev designates 95.215.58.170 as permitted sender) smtp.mailfrom=alvin.sun@linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1776784044; a=rsa-sha256; cv=none; b=d1BDi2w4qNbgLVr8R7i0psIuuJvTzVUI8Mip4z4JBR0Mqbl/kuHB2+5hN2CG2qDE19pzyp qZiHPG5IVvaaBcdgl27QIzfhBDamtoqZVQ3GFBSXcKsPLuhqOvgw+TQdEMIkL1GTCKoMfQ jhpRd+pSzEywCmpTByaetSXvtmB7y+w= Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1776784041; 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=wvD5z3d9+wA7tb/nW8saysrfgp0G4rLi1yg3WlABLYo=; b=QE89DUrPH1rS/mJokbAqm405th9d8TYKa1dLrF8IeeactyP3YmftMDTzTWrYObzGu2dBik RfGaRbfxglCRr/78WAbOgnrHM/BeX25AFAXBY2b5FkdPhwaGTzwbehqgVwHkIVjztyCLhc GE9AJw63wgunPZLtNjA+ZGkkyGNKGac= Date: Tue, 21 Apr 2026 23:06:35 +0800 MIME-Version: 1.0 Subject: Re: [PATCH 1/4] rust: sizes: add SZ_4G constant To: Gary Guo , Miguel Ojeda , Boqun Feng , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Lorenzo Stoakes , "Liam R. Howlett" , Tamir Duberstein Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, =?UTF-8?Q?Onur_=C3=96zkan?= References: <20260417-tyr-ioctls-deps-v1-0-41c6e9bb061c@linux.dev> <20260417-tyr-ioctls-deps-v1-1-41c6e9bb061c@linux.dev> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Alvin Sun In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 3E9AF4000D X-Stat-Signature: jszieqbyr513w4hxe6fiaw73xi6okjxq X-Rspam-User: X-HE-Tag: 1776784043-984476 X-HE-Meta: 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 MOJEvAQ3 zLfur0ZOW9aLQaGSE+kie8JWuMjsp2u6vnVMN5NAQlpncjOrpnxZWQE99xnHxQZTFw0lVDZkVEBKbYvw67Y2J3bO63aa+UbVi+Ji9hNqX0ToL7c23maQMapyMrndJLWrFGu73AAuadZLFnvn6RZ/yJGMna8v0ogYRJTMG2bquKn6ADL8uzZu+A4P78/wuEth7l65W5pbZ6CAe8EYJlCDcxE+22E8iYNCcRrK3LQ2t5wNsc3R9dJlX0wbvloyBE0F3Y4Po Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/20/26 23:15, Gary Guo wrote: > On Fri Apr 17, 2026 at 2:05 AM BST, Alvin Sun wrote: >> Add SZ_4G constant defined as SZ_2G * 2. This constant will be used by >> the Tyr driver for calculating user and kernel VA layout. >> >> Signed-off-by: Alvin Sun >> --- >> rust/kernel/sizes.rs | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/rust/kernel/sizes.rs b/rust/kernel/sizes.rs >> index 661e680d93306..872f5bb181ecf 100644 >> --- a/rust/kernel/sizes.rs >> +++ b/rust/kernel/sizes.rs >> @@ -48,3 +48,5 @@ >> pub const SZ_1G: usize = bindings::SZ_1G as usize; >> /// 0x80000000 >> pub const SZ_2G: usize = bindings::SZ_2G as usize; >> +/// 0x100000000 >> +pub const SZ_4G: usize = SZ_2G * 2; > How is this supposed to work with 32-bit arch? Thank you for pointing out these issues! I didn't properly consider word size differences across architectures and wasn't sensitive enough to using `usize` appropriately. I'll fix both issues in the next version of the patchset. Best regards, Alvin Sun > > Best, > Gary