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 B2DACFF5108 for ; Tue, 7 Apr 2026 15:29:27 +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:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=OZl1gUjzSqN2xdnb1IjDd6m8c+BqATTz2eJ6uGhJ2lU=; b=u6AsWYg+OkSmPJ6BSZGjCgqaBH ef7AFN/iSoVZdmi/HmRXZeGICZB6zXMTvq6sWdpqFgkr9OyTj3Xqtr0xcrc71Mt98hidBUizIXJfr fIgAiV7UQMe/kNTweNCzslPo+/Vo6LXSYraNF7HVCS28k7z2kiLzIRICf4acrSBz0iEx37vQ6g6Bb n1XRPMLawYqv8dtFblfEhisICI9679PsaK4/y0n7c8s+v+wkxC+dfJJlkVhVg3nX+4UPFBVFDQFlc 0QT+0TyZLcEwb1YBmlJ8qhROJFDJqtEuE52D/vgNLPpedoZzlMImyfTEIOnNfZLyCGJEc4OHhZKSE x8vOaj2A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wA8Ml-00000006hfz-2ikN; Tue, 07 Apr 2026 15:29:23 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wA8Mj-00000006hfI-0kju for linux-arm-kernel@lists.infradead.org; Tue, 07 Apr 2026 15:29:22 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1229D43F61; Tue, 7 Apr 2026 15:29:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F18F9C116C6; Tue, 7 Apr 2026 15:29:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775575759; bh=uIhIdZLZ5hlz4N22TCntanIRfx8ojw1qhm3OsUrpWeY=; h=From:To:Cc:Subject:Date:From; b=rt08gB/pYh7ggAIc3BfgQhWJdvwpABmMc7TP6Kchi0fa+AB5vsRs388bhi/GWRED9 vLj9H9vIe6Nn3RTOVAtGulB4XoJqL/0UpRONaB5CcwBrQ3PNDB42rldvcFbKbukh41 NQ/87kvEMmAb67K+I2DhJ3iJQOz63s3AIVAfsLYk/Dq13CtLeR8E078Mtb62E0zbTI Ew8QUQ3CSBgof3TpOu4F1IpNDZD5LPoXqqODPdYi+Prf2rwhiAlQB4mjQDBaB/1vLa AjmkGQVpo3V/SuoVJ3W9GMKZqmKjyvwgB+Z60GRqKuelDibISNYSqI/yfb2Vp3G9Ly Lb4pg/bDD+plA== From: "Aneesh Kumar K.V (Arm)" To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: "Aneesh Kumar K.V (Arm)" , Catalin Marinas , Will Deacon , Suzuki K Poulose , Steven Price , Gavin Shan Subject: [PATCH] arm64: rsi: use linear-map alias for realm config buffer Date: Tue, 7 Apr 2026 20:59:00 +0530 Message-ID: <20260407152900.396431-1-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260407_082921_234989_143A9602 X-CRM114-Status: GOOD ( 12.20 ) 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 rsi_get_realm_config() passes its argument to virt_to_phys(), but &config is a kernel image address and not a linear-map alias. On arm64 this triggers the below warning: virt_to_phys used for non-linear address: (____ptrval____) (config+0x0/0x1000) WARNING: arch/arm64/mm/physaddr.c:15 at __virt_to_phys+0x50/0x70, CPU#0: swapper/0 Modules linked in: ..... Hardware name: linux,dummy-virt (DT) pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __virt_to_phys+0x50/0x70 lr : __virt_to_phys+0x4c/0x70 ..... ...... Call trace: __virt_to_phys+0x50/0x70 (P) arm64_rsi_init+0xa0/0x1b8 setup_arch+0x13c/0x1a0 start_kernel+0x68/0x398 __primary_switched+0x88/0x90 Pass lm_alias(&config) instead so the RSI call uses the linear-map alias of the same buffer and avoids the boot-time warning. Signed-off-by: Aneesh Kumar K.V (Arm) --- Cc: Catalin Marinas Cc: Will Deacon Cc: Suzuki K Poulose Cc: Steven Price Cc: Gavin Shan --- arch/arm64/kernel/rsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/rsi.c b/arch/arm64/kernel/rsi.c index 9e846ce4ef9c..92160f2e57ff 100644 --- a/arch/arm64/kernel/rsi.c +++ b/arch/arm64/kernel/rsi.c @@ -145,7 +145,7 @@ void __init arm64_rsi_init(void) return; if (!rsi_version_matches()) return; - if (WARN_ON(rsi_get_realm_config(&config))) + if (WARN_ON(rsi_get_realm_config(lm_alias(&config)))) return; prot_ns_shared = __phys_to_pte_val(BIT(config.ipa_bits - 1)); -- 2.43.0