From nobody Thu Jan 1 09:00:37 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07771C07545 for ; Tue, 24 Oct 2023 11:28:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229972AbjJXL2v (ORCPT ); Tue, 24 Oct 2023 07:28:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229487AbjJXL2u (ORCPT ); Tue, 24 Oct 2023 07:28:50 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2DA74128; Tue, 24 Oct 2023 04:28:48 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-1c9d132d92cso8264295ad.0; Tue, 24 Oct 2023 04:28:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1698146927; x=1698751727; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=CX4+doENGmNchlwWpwv+1yjRTi3YVh0wXhBLOXVVrzE=; b=Njhyf1s/QWkeaHdK34rzxZqNZRX8tFKGfAjLGyfwmMr+KpKVhSuYdcNr09hhREN+s2 DFczBtQIiblfsteU8dK9aHdJA6CjBFMgDbeXCz7CCqItxh2epYk45VW+2RiaY6MPJztl z+Dp1OjasT6WTc9BeAILGRI2khHOcBP3bXN0pUAKakW+rOtnKuh6sgZbrF6UDkngrOmK 3GT44PJtAJ1KRye5uSJziKdy+xQDO8PqGo7Ws+cVTII6lGg80Wbyqmxr/tRBY3oMy1rS X4SscLmNyAwsJK2YkYz4DMoSoJ9E0GXcAdwgqox0rHly9nDmnJAygj+iRdrnwtb+AbVM sEWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698146927; x=1698751727; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=CX4+doENGmNchlwWpwv+1yjRTi3YVh0wXhBLOXVVrzE=; b=ZWDqFVjAK9OBS1PEEU2CSS1r2jAYXSVCHAyfQUm24hhqeBYOSqsIWPwiTK9tEIYXhh 9i+1zb/e4o838/h+RSyl++JZRpNL4V9e5eMmxKeojb4f3CXhoLWnNJoemZcGGUFSk726 q1eSdnSAOBD8z0p5RPfPh3IB4xREDIsdOzDs0RFtw2NALLcNOWOZo/4K2tikIiUDcIhi /RWwtyZhKzBpYgYMuynFgJ0ETV7bnP1VgBCjkQNROJjMzpI+yMpE5215mMX3zkxewvUo qtNYb3XLPLI4XucvjuWoN4fN038OEeAKo1GRs56b/Y9glWVILDwBRwr70dMH7JGeQ4pV nGQA== X-Gm-Message-State: AOJu0YxkQDPVAy3RhXyWprjPIkTX5+HrJiZLWKlOSy09t+xlQXg90msP OMJcloHQKu6vPMBTNQoOTsw= X-Google-Smtp-Source: AGHT+IHnUt4lOv0br/JRsZPJbyPC+wE41o4TMvkk1en97kacjTGvMMNuo1FHRQVaytnmZikbIAVbCw== X-Received: by 2002:a17:902:dac6:b0:1c1:fbec:bc3f with SMTP id q6-20020a170902dac600b001c1fbecbc3fmr11428938plx.5.1698146927571; Tue, 24 Oct 2023 04:28:47 -0700 (PDT) Received: from abhinav.. ([103.75.161.208]) by smtp.gmail.com with ESMTPSA id q13-20020a17090311cd00b001b7f40a8959sm7219640plh.76.2023.10.24.04.28.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Oct 2023 04:28:47 -0700 (PDT) From: Abhinav Singh To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, Abhinav Singh Subject: [PATCH] Fixing warning cast removes address space '__iomem' of expression Date: Tue, 24 Oct 2023 16:58:32 +0530 Message-Id: <20231024112832.737832-1-singhabhinav9051571833@gmail.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This patch fixes sparse complaining about the removal of __iomem address space when casting the return value of this function ioremap_cache(...) from `void __ioremap*` to `void*`. I think there are two way of fixing it, first one is changing the datatype of variable `ghcb_va` from `void*` to `void __iomem*` .=20 Second way of fixing it is using the memremap(...) which is=20 done in this patch. Signed-off-by: Abhinav Singh --- arch/x86/hyperv/hv_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 21556ad87f4b..c14161add274 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -70,7 +70,7 @@ static int hyperv_init_ghcb(void) =20 /* Mask out vTOM bit. ioremap_cache() maps decrypted */ ghcb_gpa &=3D ~ms_hyperv.shared_gpa_boundary; - ghcb_va =3D (void *)ioremap_cache(ghcb_gpa, HV_HYP_PAGE_SIZE); + ghcb_va =3D memremap(ghcb_gpa, HV_HYP_PAGE_SIZE, MEMREMAP_WB); if (!ghcb_va) return -ENOMEM; =20 --=20 2.39.2