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 9A91EC5B572 for ; Tue, 18 Aug 2026 02:39:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=yxbLaG1rD5kZSvT2XGVu7wrJXbwJiT/TQyv29DUQeiE=; b=420efZhMRujbiQ RdCNwMZkF/grSDQmKFvFl5KLWsxbKjQ/WGYivUoaBctNSkmWRH936tK8PccSo0vtjD3RfnYbsM24P LR1ih7q3lMmlUdRCzOTfT8t8uomOkRWWGo2UR+t598NUZ56vh2sA8VUha/sc2U/bjqnizIzrk7WdM SkZN9RytCpOcxaDVG2ZHOUWPWvU+OYKmrrvoOAb5hxX6SlFeMMHTNyJmdkBB+cR/Nk2gyQIxtacxI KroheD7g3gQJ83Iq9XaI4iQ4R09ox1KW1MP1cuLHlbb3dadJ5ypwzbIkzX2KZXvQpwr1UKoDelJr2 jjfeNzeeAzGhnuIU45TA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1ww9jr-000000076gW-2ufR; Tue, 18 Aug 2026 02:39:43 +0000 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1ww9jm-000000076g5-19yM for opensbi@lists.infradead.org; Tue, 18 Aug 2026 02:39:42 +0000 Received: by mail-pj1-x102c.google.com with SMTP id 98e67ed59e1d1-38dcbade417so4119989a91.1 for ; Mon, 17 Aug 2026 19:39:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1787020777; x=1787625577; darn=lists.infradead.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=idyKkNR+42mo+Rjnf79cre2NT3NROoVly/vDc3aZWfY=; b=m1elLCX+csoIxA2UZ6Qs/YM2rfoKho8WsshfQZCTTK76q9HGIZjLJ4NKv6x3hSIAVr zUrDWC6Qv1bJngEvTgEPn6XanHeByGUbUgA3a0BX7oHtDqji/8+saRLnlsvB7aqFingH 8LZTfLMDPKsQ6YpteQpyzC+1bzIyuBnb1E1Z5Keyk0/l7TL1AKCKucwNNLoMbmFXkT1q TBxxuYzhndSZSfktOYu0TNkY7Nct6OkVx9vCteZVL9haNQ6wKR+LeQuGlOw9srjR30zk UkEFlDdbUeuzObtX4MlC1YL6xEvBg21JkjWR+suVVLtmAK2NYKJlUb2bEJjGIuvjWwo8 OHJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787020777; x=1787625577; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=idyKkNR+42mo+Rjnf79cre2NT3NROoVly/vDc3aZWfY=; b=fw2QX2O4vAk7rUEpsXkt0OdCJYcGtwD3Ah6ldN7RY/2znDyyP8N+8o+ygsMcyR9jdO Vwh4sd/3DxlgE9jPM9IJXwqKY+C7bYuQululhgdB3/gboRAnjESxOWgg6cVAojwFOJip 7hjeUVBIKDvlGTWfIj/VfPakPCzoUrpilqhwpK8D2v4hRjvH1ApJuK2KxzoW4StOUV02 CfLxiW71MNxsrxdL/h209BtZKikeYdUmPWwI3CUuoi/zFyCnvj7ud0jBqWw7klN50HGq 6ANUDGx2Jo/bm36zLhp/NDjMRQYmfdRz7tquqTbwr2o8JGJJSTv8YBlMNnyxgLxT/XE2 wVyw== X-Gm-Message-State: AOJu0YyGxGQtPlhZhRUwkejWbQlCh3Wmruk39PGbQk3dbxK0xwfuSD5u Ugr66BIZQlnVnqU6gDeAXmuQXXrurYNff6TYYPftoee0QoMRqlKXt1ustNVxcw4kqiB+KVi/ZMy 13gPtasbx8ZXwaW10w7FIQiuKewIVuoFByhQhDO5Ok+SbeDqugjc4DK/mP0dCDHfpDhTHPV0w6s 25k2frfhSpmjAKjOcyMuDhShx7UtZZSbfIErItx1J9mk948TzNU74= X-Gm-Gg: AR+sD11w7trTCyVk0iETrYmmdnhQNKYsuwQ550L1NM6UVVokA0xx4/849JYbMDzpLpj h2sf/z8sjWAS4EvQ7h8XUJezshXvbQsLxaYbAOi+y0Vb60fQYDaE3QVWrz/tFstCMIlXv2sbffV T/KCvPd4DLMRWEaZRsFHWQN96rg2u+R5Dx+ATXJhzVeQ2z6zSV0sps5AvGYI6aomTXGDruyXw7v s3rY8xMLxWLKOK48+kS6S8chcaj6BeLgAOgZxpv64Xg7C3TIVi75NR1L8a8LC/V9zlh71QOs7HZ /YBASKdwH2bRhEcKSGSp0Yu3bd1WV2TGhK06tnbw0nSrDF7X4FUQotkfCx5fbzQX2RI+jx2bumj an3EmhDDy43lN7MOufLVdIVm8Ey34HUxT8HXuiuARdB+zYfOCKC3CieIu783lz995up+E7M8CTd zF4+bAJBSzjsXSZ9UXoTX80kzycCUhSrXJ1bglk3cGBLT2rmQwgjtLnIbX6+aOWfvW27xPCw== X-Received: by 2002:a17:90b:4fce:b0:37c:6910:5758 with SMTP id 98e67ed59e1d1-3955a3dd55fmr6298253a91.1.1787020777023; Mon, 17 Aug 2026 19:39:37 -0700 (PDT) Received: from plin-1878 ([136.226.240.163]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39531fbb3c5sm6914137a91.9.2026.08.17.19.39.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Aug 2026 19:39:36 -0700 (PDT) Date: Tue, 18 Aug 2026 10:39:30 +0800 From: Yu-Chien Peter Lin To: opensbi@lists.infradead.org Cc: zong.li@sifive.com, greentime.hu@sifive.com, anup@brainfault.org, scott@riscstar.com, conor@kernel.org, dave.patel@riscstar.com, raymond.mao@riscstar.com, robin.randhawa@sifive.com, samuel.holland@sifive.com, pawandeep.oza@oss.qualcomm.com, krzk@kernel.org Subject: Re: [PATCH v2 5/9] lib: sbi_hart: add WID protection mechanism Message-ID: References: <20260817090503.2104998-1-peter.lin@sifive.com> <20260817090503.2104998-6-peter.lin@sifive.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20260817090503.2104998-6-peter.lin@sifive.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260817_193938_335127_CD803483 X-CRM114-Status: GOOD ( 16.49 ) X-BeenThere: opensbi@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "opensbi" Errors-To: opensbi-bounces+opensbi=archiver.kernel.org@lists.infradead.org On Mon, Aug 17, 2026 at 05:04:59PM +0800, Yu-Chien Peter Lin wrote: > Register a WID-based hart protection mechanism that > configures mlwid and mwiddeleg CSRs on domain entry. > This enables the protection framework reconfigure WID > isolation whenever domains are switched. > > Signed-off-by: Yu-Chien Peter Lin > --- > Changes v1 -> v2: > - Validate WID against pmlwidlist before writing mlwid CSR (Oza) > --- > include/sbi/sbi_hart_worlds.h | 24 ++++++++++++ > lib/sbi/objects.mk | 1 + > lib/sbi/sbi_hart.c | 5 +++ > lib/sbi/sbi_hart_worlds.c | 72 +++++++++++++++++++++++++++++++++++ > 4 files changed, 102 insertions(+) > create mode 100644 include/sbi/sbi_hart_worlds.h > create mode 100644 lib/sbi/sbi_hart_worlds.c > > diff --git a/include/sbi/sbi_hart_worlds.h b/include/sbi/sbi_hart_worlds.h > new file mode 100644 > index 00000000..2bb35a7e > --- /dev/null > +++ b/include/sbi/sbi_hart_worlds.h > @@ -0,0 +1,24 @@ > +/* > + * SPDX-License-Identifier: BSD-2-Clause > + * > + * Copyright (c) 2026 SiFive Inc. > + */ > + > +#ifndef __SBI_HART_WORLDS_H__ > +#define __SBI_HART_WORLDS_H__ > + > +struct sbi_scratch; > + > +/** > + * Initialize WID hart protection for current HART > + * > + * Registers the WID protection mechanism if Smwid/Smlwid > + * extensions are present. Only Smlwid is needed for registration. Will update comment here in the next version. -- opensbi mailing list opensbi@lists.infradead.org http://lists.infradead.org/mailman/listinfo/opensbi