From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 061A71EF366 for ; Fri, 28 Feb 2025 15:39:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740757150; cv=none; b=b2WHTzn4Pi69wDNJQjj+fYTJNSnxgDX8jEeZdkyWWsaCt6Vkan9sPHFcYcEkHeC3MKwLmSoN97/TSce1OIoE+cWy79zjOHKKlzkfPNXGEWH+PM/+uJuj8ohUT9d3ubBEnm2umQpw7haqf/PahBnQ3Xk6D5ZpW1E8jLujdJ/7xHI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740757150; c=relaxed/simple; bh=AChTyM9HXnSzNqES1jZlNlbepSmTNsshVFZm47ZYMZ4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=XQmJNHVDa5Q9PIQYwJ7cLCjvIgGydBoRtgWYeKilHdCQvaT63oPONNeKVOe8fg3QMqdBxC93X4zfqL/PZoh5r6JyXlwkfblqzZAFDBfF71AO6Erj0luRlGMrq4G6CKiR5ipAL7cg3MmRUg5yFmCsQeCuIBlQQiBcVdmFvKT5Guc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=pM5ublSD; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="pM5ublSD" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=AChTyM9HXnSzNqES1jZlNlbepSmTNsshVFZm47ZYMZ4=; b=pM5ublSDQ9ECIzQvdQM3O6KmRm FxR9hGVcvPRMsVv25Lz+0y0NIiRdV5ioAjWqvB/1N/8cVtZBscKWdGB93r8FwbTOZJ6TL+Pb4pwIx wiISITsF13UD5rWvbY4dh5M0yoNZwn1j1cGpCDFX7PDnu4TKE00Kmq2gTVcXKNL34R7HAmnjMwmDG 9AkKdtgvKSfQZ+xe6UozaSvOsmW1evt9Z0cIJ2yr5n0mtyw1PBjhglKllGG2sR9YvDhnwbEAxSsYY YA0IIuS2mqOymTokDvlbru/1o+nhvZJ4O8n7w819/SmcC9/zXQqX6pZDR6bNFZkKDStBX3ers9Bz1 05wDpNyw==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1to2S3-00000002B9m-168B; Fri, 28 Feb 2025 15:38:59 +0000 Date: Fri, 28 Feb 2025 15:38:59 +0000 From: Matthew Wilcox To: David Hildenbrand Cc: Linus Torvalds , Mathieu Desnoyers , Andrew Morton , linux-kernel@vger.kernel.org, Olivier Dion , linux-mm@kvack.org Subject: Re: [RFC PATCH 0/2] SKSM: Synchronous Kernel Samepage Merging Message-ID: References: <20250228023043.83726-1-mathieu.desnoyers@efficios.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: On Fri, Feb 28, 2025 at 04:34:50PM +0100, David Hildenbrand wrote: > Maybe it would be comparable to khugepaged vs. MADV_COLLAPSE? I think it is comparable ... because many people find khugepaged unacceptable and there are proposals to move that to userspace.