From owner-svn-src-all@FreeBSD.ORG Fri Dec 20 19:27:01 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 3A49893; Fri, 20 Dec 2013 19:27:01 +0000 (UTC) Received: from mail-qc0-x22e.google.com (mail-qc0-x22e.google.com [IPv6:2607:f8b0:400d:c01::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id CA25612BE; Fri, 20 Dec 2013 19:27:00 +0000 (UTC) Received: by mail-qc0-f174.google.com with SMTP id n7so2644265qcx.33 for ; Fri, 20 Dec 2013 11:26:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=QcQeA2Vt9zvHFLbeTRpWUel4QCUr/JvcPE5hYHaSZY4=; b=PSLlhefnXjMaFWnZ0HzYH3HgXoEQ9WL/iSsEHgTQsE9PN6Azv6L46JeqsPWZorCrVi RuiHtA4PFIrIKftWVe4JfYrxXKAuEqFnzzFb3ZvyHgBruBjXlnQa/4lcH2EKIbcuYe6C ZMUGHo9EYUSsvbgf52BY35HlLkw/x4L0Or1LiBf/2TE+puXVzHmVVkim7b6rgRPQKAZk DYrvApeLwwA9VFTJ3u2Di6WzTNimQUXDvisV7M9uLO3aR9X0vwNOS5xXa7ms+3h5WPme S4lJw5ynv/6jBAAsjmEYWw2G+4Zkn0WUVEw72WvSC+x7RURBYo28ZFvlhRxGT8pJgrI5 xwAQ== MIME-Version: 1.0 X-Received: by 10.49.15.202 with SMTP id z10mr17400556qec.46.1387567619788; Fri, 20 Dec 2013 11:26:59 -0800 (PST) Received: by 10.140.34.17 with HTTP; Fri, 20 Dec 2013 11:26:59 -0800 (PST) In-Reply-To: References: <201312200550.rBK5oNmw098487@svn.freebsd.org> Date: Fri, 20 Dec 2013 11:26:59 -0800 Message-ID: Subject: Re: svn commit: r259641 - in head/sys/amd64: amd64 include vmm/intel From: Neel Natu To: Benjamin Kaduk Content-Type: text/plain; charset=ISO-8859-1 Cc: "svn-src-head@freebsd.org" , "svn-src-all@freebsd.org" , "src-committers@freebsd.org" X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Dec 2013 19:27:01 -0000 Hi Ben, On Fri, Dec 20, 2013 at 10:27 AM, Benjamin Kaduk wrote: > On Thu, Dec 19, 2013 at 9:50 PM, Neel Natu wrote: >> >> Author: neel >> Date: Fri Dec 20 05:50:22 2013 >> New Revision: 259641 >> URL: http://svnweb.freebsd.org/changeset/base/259641 >> >> Log: >> Re-arrange bits in the amd64/pmap 'pm_flags' field. >> >> The least significant 8 bits of 'pm_flags' are now used for the IPI >> vector >> to use for nested page table TLB shootdown. >> >> Previously we used IPI_AST to interrupt the host cpu which is >> functionally >> correct but could lead to misleading interrupt counts for AST handler. >> The >> AST handler was also doing a lot more than what is required for the >> nested >> page table TLB shootdown (EOI and IRET). > > > This represents a KBI change, does it not? Should __FreeBSD_version be > bumped? > I was under the impression that a bump would be required only if this change is MFCed to a stable branch. I could be wrong about this and if so would be happy to rectify it. best Neel > -Ben