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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 35168C5DF66 for ; Sun, 16 Aug 2026 09:42:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zPye3ew1a3LqRzVB13ZlWIDx0RqJAzodAjF7DeEyrpY=; b=TURAFcr4RhY5Bdlhhgqv1p9lKQ NdS0JRo7QDRxK71QvIdxCPTsRV5dOk8KWbJzm4wphk2A2+QgHmzUpzyxRuj7JmmPagL3SSbja0SuN u6y/jbTd/S8NknCnigUMAtaG2nlOmdqxbylBxK5eipjyFhY3hblyptWgCcQO/ST+RpBu8E4CNinuu VSESaaaVydeNGUkFUAdd2TiRVdkDYQjRb/Hh2x1Y+548a9mhWQis2eoDQbT/g1Ny2+v9BxjcD3fAl We3Iy3ChAOFp6czhdeH55g/EurBxEhgF5akCEW+b5kTNHNBU0SzZkpINZl2Ueq4OdV+A3GoMq24kP ya5EaMuw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wvXO8-00000004cXI-0CrM; Sun, 16 Aug 2026 09:42:44 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wvXO6-00000004cXC-2lTW for linux-arm-kernel@lists.infradead.org; Sun, 16 Aug 2026 09:42:43 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id E22C9419F3; Sun, 16 Aug 2026 09:42:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AFE9E1F000E9; Sun, 16 Aug 2026 09:42:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786873359; bh=zPye3ew1a3LqRzVB13ZlWIDx0RqJAzodAjF7DeEyrpY=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=MYx4iFH7kfrR8wSTb6FDSpQseWfn0kL9+TZHUiSzEnYuhOzE8N/hwidYgEhooh6zP l1tNT9bY0NdKzpBiuxftuNzVcyao2JvSGiLWSESW74d1RRZXO+uQVunjo0pnp+GS0K r6Vxa84TYoNFVfaYAw56NDPGnFs52Cgera65J9JnpxwUUowvjlE8BfC+KHezr8B9jM EyYVIWEkS0vIHw9TT7VN0hsJEYzEBPKnjwuSuhNwGBKVqICeHi5f3O8Bw1+kjAHpp9 dWRhCg/olJiGYi2/+HgPu6fdY62RZmQcckuaFqcRCt6wWz5Kele82uY4KrU6gWtGIm 63tTbBpXvK8HQ== Date: Sun, 16 Aug 2026 10:42:34 +0100 From: Will Deacon To: Ard Biesheuvel Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Eric Biggers , Daniel Borkmann , Catalin Marinas , Alexei Starovoitov , Oliver Upton , Herbert Xu , Marc Zyngier Subject: Re: [PATCH 06/12] arm64: assembler: Remove endianness helper macros Message-ID: References: <20260811140132.22778-1-will@kernel.org> <20260811140132.22778-7-will@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Aug 11, 2026 at 05:04:43PM +0200, Ard Biesheuvel wrote: > On Tue, 11 Aug 2026, at 16:01, Will Deacon wrote: > > diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S > > index 87a822e5c4ca..8951ce693552 100644 > > --- a/arch/arm64/kernel/head.S > > +++ b/arch/arm64/kernel/head.S > > @@ -138,8 +138,7 @@ SYM_CODE_START_LOCAL(record_mmu_state) > > b.ne 0f > > mrs x19, sctlr_el2 > > 0: > > -CPU_LE( tbnz x19, #SCTLR_ELx_EE_SHIFT, 1f ) > > -CPU_BE( tbz x19, #SCTLR_ELx_EE_SHIFT, 1f ) > > + tbnz x19, #SCTLR_ELx_EE_SHIFT, 1f > > tst x19, #SCTLR_ELx_C // Z := (C == 0) > > and x19, x19, #SCTLR_ELx_M // isolate M bit > > csel x19, xzr, x19, eq // clear x19 if Z > > There is some more code that can be removed here - see > 2ced0f30a426c7301350681f838344d5aea711e3 Good spot, thanks! I'll do some more surgery at -rc1. Will