From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx203.postini.com [74.125.245.203]) by kanga.kvack.org (Postfix) with SMTP id C4B2A6B00F7 for ; Thu, 17 May 2012 11:08:57 -0400 (EDT) Message-ID: <1337267329.4281.32.camel@twins> Subject: Re: [PATCH v2 3/3] x86: Support local_flush_tlb_kernel_range From: Peter Zijlstra Date: Thu, 17 May 2012 17:08:49 +0200 In-Reply-To: <1337266310.4281.30.camel@twins> References: <1337133919-4182-1-git-send-email-minchan@kernel.org> <1337133919-4182-3-git-send-email-minchan@kernel.org> <4FB4B29C.4010908@kernel.org> <1337266310.4281.30.camel@twins> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Minchan Kim Cc: Greg Kroah-Hartman , Nitin Gupta , Seth Jennings , Dan Magenheimer , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Thomas Gleixner , Ingo Molnar , Tejun Heo , David Howells , x86@kernel.org, Nick Piggin On Thu, 2012-05-17 at 16:51 +0200, Peter Zijlstra wrote: >=20 > Also, does it even work if the range happens to be backed by huge pages? > IIRC we try and do the identity map with large pages wherever possible.= =20 OK, the Intel SDM seems to suggest it will indeed invalidate ANY mapping to that linear address, which would include 2M and 1G pages. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org