Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761072AbYCYWEK (ORCPT ); Tue, 25 Mar 2008 18:04:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757858AbYCYWD4 (ORCPT ); Tue, 25 Mar 2008 18:03:56 -0400 Received: from py-out-1112.google.com ([64.233.166.176]:42560 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757504AbYCYWDz (ORCPT ); Tue, 25 Mar 2008 18:03:55 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=kVzFphMk44cL9u1lEY0K7bE5wGw41p2miWTSLu8DnTwRyUxrCaOpBfNCvbTuDeOOjX5hJckmhhaUJ1MdDD611iEPEP8U9E04qbcGQsMg5+0FEUGJLfyw94QV0Fu2fjFMfxU1aT21tsvRS3SckEqAKEG+VGSNzXq9asP/gCMEOpY= Message-ID: <998d0e4a0803251503v7bf20ad4ndb0e21b1eead7f9d@mail.gmail.com> Date: Tue, 25 Mar 2008 23:03:54 +0100 From: "J.C. Pizarro" To: LKML Subject: What means Hugepage? 8KiB,16KiB,..,2MiB or 4MiB? MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 677 Lines: 17 What means Hugepage? Does it mean 8KiB? 16KiB? 32KiB? 64KiB? 2MiB? 4MiB? The real page sizes of x86 and x86-64 are 4 KiB for this linux kernel. But the page sizes can be soft 8 KiB or 16 KiB or 32 KiB or 64 KiB if it is implemented in the memory manager of the kernel. But too they exist real page sizes of 2 MiB and 4 MiB that they have some reserved entries of TLB in the specs of Intel/AMD processors for these gigant pages. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/