From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 177A520E3; Thu, 14 Nov 2024 04:20:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731558048; cv=none; b=jI4jofNLcZG3te1HXF8qV53avw3OTbr421j3moCuAxoXywSME8jU7s+3Te3Q7W9HDit44w3H8bGLTOrd29BT0sNnSG6SlGnbLYd0QlzhA5g4ZrhikKsCzl84J2PMTEx/2xxVv5RZF2D3m2bvRdgwcxLOfUv1NNW8Tl4xJT+fu9I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731558048; c=relaxed/simple; bh=YVIWZls2hfJ7VYSlPL8sAB0nPPFY4ogRaKErX/qfjPU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ATQkdlUl9eDI/XgCzYVNebqMUatsJbgnqwbJeSzQ+8lI+RnVOmsyWC+/Lzi8+UZ7N1RxTmFIpWYigQ+LxCckRjA40Ximbg2LWcGQAKM0ULYebfeQgeDVVAF+0BlzBc9eEf51euow1QnhqSZhfNABQ19UnWqProu5RS0kgy+/SXg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nFTr+5XP; arc=none smtp.client-ip=192.198.163.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nFTr+5XP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731558046; x=1763094046; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=YVIWZls2hfJ7VYSlPL8sAB0nPPFY4ogRaKErX/qfjPU=; b=nFTr+5XPBDHe/20QiXTYhRS1ON9pBxJsHkJXBucRgfTg1ukK50kmI4rX g/q89Kcx5f2lKFyBgn1upiKgNTn0x8szT4NFPU6Uf0LPYrttEZIZA9FfB iNSo2x3TVdkv+Fa04ueQcMCl4AEir/VBArlvI10FkZ4Suh/lH6Hi39jSZ jubp9oXBRM2y8Gin2G0bRimkBXA3UVTEoZZrYnx+V8ONWcW4kqJ0/Dylp qJRJGtBnHeEOU32OhbnvuvrHuWbHyf0n5x3GrysC2XEg3OxAzPuljxCEV WyDA6cMFWr1KUziFwFnYMyUhLj8Cg2wjYZykeEoni+35OiUbrHnL2lW9T w==; X-CSE-ConnectionGUID: rziZ30DpQWmttRjKYkUFqw== X-CSE-MsgGUID: K2PKI6viT6yxODjssYEU3g== X-IronPort-AV: E=McAfee;i="6700,10204,11255"; a="35407490" X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="35407490" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Nov 2024 20:20:45 -0800 X-CSE-ConnectionGUID: UrnCjMjPTr2ogMm3HDdJkA== X-CSE-MsgGUID: B5mR+kraRmOUlR81jExqDA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,153,1728975600"; d="scan'208";a="92875745" Received: from lkp-server01.sh.intel.com (HELO b014a344d658) ([10.239.97.150]) by fmviesa004.fm.intel.com with ESMTP; 13 Nov 2024 20:20:43 -0800 Received: from kbuild by b014a344d658 with local (Exim 4.96) (envelope-from ) id 1tBRLU-00006X-1t; Thu, 14 Nov 2024 04:20:40 +0000 Date: Thu, 14 Nov 2024 12:20:23 +0800 From: kernel test robot To: Michal Wajdeczko , intel-xe@lists.freedesktop.org Cc: oe-kbuild-all@lists.linux.dev, Michal Wajdeczko , Matthew Wilcox , Alexander Viro , Andrew Morton , Linux Memory Management List , Rodrigo Vivi , Matthew Brost , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v2 1/4] iov_iter: Provide copy_iomem_to|from_iter() Message-ID: <202411141227.4kDiZIXM-lkp@intel.com> References: <20241112200454.2211-2-michal.wajdeczko@intel.com> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241112200454.2211-2-michal.wajdeczko@intel.com> Hi Michal, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-xe/drm-xe-next] [also build test WARNING on brauner-vfs/vfs.all akpm-mm/mm-nonmm-unstable linus/master v6.12-rc7 next-20241113] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Michal-Wajdeczko/iov_iter-Provide-copy_iomem_to-from_iter/20241113-080831 base: https://gitlab.freedesktop.org/drm/xe/kernel.git drm-xe-next patch link: https://lore.kernel.org/r/20241112200454.2211-2-michal.wajdeczko%40intel.com patch subject: [PATCH v2 1/4] iov_iter: Provide copy_iomem_to|from_iter() config: arm-randconfig-r113-20241113 (https://download.01.org/0day-ci/archive/20241114/202411141227.4kDiZIXM-lkp@intel.com/config) compiler: clang version 16.0.6 (https://github.com/llvm/llvm-project 7cbf1a2591520c2491aa35339f227775f4d3adf6) reproduce: (https://download.01.org/0day-ci/archive/20241114/202411141227.4kDiZIXM-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202411141227.4kDiZIXM-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) lib/iov_iter.c:373:47: sparse: sparse: cast removes address space '__iomem' of expression lib/iov_iter.c:386:47: sparse: sparse: cast removes address space '__iomem' of expression >> lib/iov_iter.c:349:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const volatile [noderef] __iomem *from @@ got void * @@ lib/iov_iter.c:349:9: sparse: expected void const volatile [noderef] __iomem *from lib/iov_iter.c:349:9: sparse: got void * lib/iov_iter.c:330:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const volatile [noderef] __iomem *from @@ got void * @@ lib/iov_iter.c:330:9: sparse: expected void const volatile [noderef] __iomem *from lib/iov_iter.c:330:9: sparse: got void * >> lib/iov_iter.c:362:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got void *to @@ lib/iov_iter.c:362:9: sparse: expected void volatile [noderef] __iomem *to lib/iov_iter.c:362:9: sparse: got void *to >> lib/iov_iter.c:338:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *to @@ got void * @@ lib/iov_iter.c:338:9: sparse: expected void volatile [noderef] __iomem *to lib/iov_iter.c:338:9: sparse: got void * vim +349 lib/iov_iter.c 333 334 static __always_inline 335 size_t memcpy_iomem_from_iter(void *iter_from, size_t progress, size_t len, 336 void *to, void *priv2) 337 { > 338 memcpy_toio(to + progress, iter_from, len); 339 return 0; 340 } 341 342 static __always_inline 343 size_t copy_iomem_to_user_iter(void __user *iter_to, size_t progress, 344 size_t len, void *from, void *priv2) 345 { 346 unsigned char buf[SMP_CACHE_BYTES]; 347 size_t chunk = min(len, sizeof(buf)); 348 > 349 memcpy_fromio(buf, from + progress, chunk); 350 chunk -= copy_to_user_iter(iter_to, progress, chunk, buf, priv2); 351 return len - chunk; 352 } 353 354 static __always_inline 355 size_t copy_iomem_from_user_iter(void __user *iter_from, size_t progress, 356 size_t len, void *to, void *priv2) 357 { 358 unsigned char buf[SMP_CACHE_BYTES]; 359 size_t chunk = min(len, sizeof(buf)); 360 361 chunk -= copy_from_user_iter(iter_from, progress, chunk, buf, priv2); > 362 memcpy_toio(to, buf, chunk); 363 return len - chunk; 364 } 365 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki