From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (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 E3119199924 for ; Tue, 18 Mar 2025 06:48:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.95.11.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742280498; cv=none; b=qvzOVyxum7Ms7HDU0VVrhFI2BCLs2OaM9Q6V8dNX61TWInLBmCgu6quoFIK5Wk+Q0hGxTvtYy0Ny6HCr3t0CdqpX+5hXemIYNS0ef1f4QTQGBD0UmaDcwfYpxvp5iZZistIWDwad02Ugpk559U+hO74XNbykoKvAToAUamSUROI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742280498; c=relaxed/simple; bh=+vOmGynVLEJEyjGsolGld1dROzzH8zp9bw6wLy2zCXE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=h/0LLM5xtYzBnMnfXyJOWXdNUvxk6iByMCaobuy+D3zbMjf6cA1Z7gJsm5R9zzShY/WpV4rYkPlWNq5Zc9tYwsBhENTqsfvB80OGFqg/9XGBfFzCB+7ZVnXHB3L4y+fYs1qjwRRzYujLqZS29cZOLScArs9U/FjbxGIKksPNexI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de; spf=pass smtp.mailfrom=lst.de; arc=none smtp.client-ip=213.95.11.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lst.de Received: by verein.lst.de (Postfix, from userid 2407) id BE85268AA6; Tue, 18 Mar 2025 07:48:05 +0100 (CET) Date: Tue, 18 Mar 2025 07:48:05 +0100 From: Christoph Hellwig To: Huan Yang Cc: hch@lst.de, akpm@linux-foundation.org, bingbu.cao@linux.intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, opensource.kernel@vivo.com, rppt@kernel.org, ryan.roberts@arm.com, urezki@gmail.com, ziy@nvidia.com Subject: Re: [PATCH] mm/vmalloc: fix mischeck pfn valid in vmap_pfns Message-ID: <20250318064805.GA16121@lst.de> References: <20250317055304.GB26662@lst.de> <5a12454c-16a1-4400-a764-f49293d8dece@vivo.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <5a12454c-16a1-4400-a764-f49293d8dece@vivo.com> User-Agent: Mutt/1.5.17 (2007-11-01) So you want a folio based version of vmap. Please work on that instead of doing crazy hacks using vmap_pfns which is just for memory not historically backed by pages and now folios.