From owner-svn-src-head@FreeBSD.ORG Mon Jun 23 12:43:31 2014 Return-Path: Delivered-To: svn-src-head@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 81EC7CA5; Mon, 23 Jun 2014 12:43:31 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6EF002393; Mon, 23 Jun 2014 12:43:31 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s5NChV61012309; Mon, 23 Jun 2014 12:43:31 GMT (envelope-from brueffer@svn.freebsd.org) Received: (from brueffer@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s5NChVPA012308; Mon, 23 Jun 2014 12:43:31 GMT (envelope-from brueffer@svn.freebsd.org) Message-Id: <201406231243.s5NChVPA012308@svn.freebsd.org> From: Christian Brueffer Date: Mon, 23 Jun 2014 12:43:31 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r267785 - head/share/man/man9 X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jun 2014 12:43:31 -0000 Author: brueffer Date: Mon Jun 23 12:43:30 2014 New Revision: 267785 URL: http://svnweb.freebsd.org/changeset/base/267785 Log: Several small fixes (typos, grammar, mdoc). Modified: head/share/man/man9/fpu_kern.9 Modified: head/share/man/man9/fpu_kern.9 ============================================================================== --- head/share/man/man9/fpu_kern.9 Mon Jun 23 09:47:52 2014 (r267784) +++ head/share/man/man9/fpu_kern.9 Mon Jun 23 12:43:30 2014 (r267785) @@ -23,8 +23,8 @@ .\" .\" $FreeBSD$ .\" -.Dd June 21, 2014 -.Dt KERN_FPU 9 +.Dd June 23, 2014 +.Dt FPU_KERN 9 .Os .Sh NAME .Nm fpu_kern @@ -47,11 +47,11 @@ The .Nm family of functions allows the use of FPU hardware in kernel code. Modern FPUs are not limited to providing hardware implementation for -floating point arithmetic, they offer advanced accelerators for cryptography +floating point arithmetic; they offer advanced accelerators for cryptography and other computational-intensive algorithms. These facilities share registers with the FPU hardware. .Pp -Typical kernel code does not need to access to the FPU. +Typical kernel code does not need access to the FPU. Saving a large register file on each entry to the kernel would waste time. When kernel code uses the FPU, the current FPU state must be saved to @@ -80,6 +80,7 @@ without sleep. .It 0 No special handling is required. .El +.Pp The function returns the allocated context area, or .Va NULL if the allocation failed. @@ -121,6 +122,7 @@ The function correctly handles such contexts. .El .El +.Pp The function does not sleep or block. It could cause the .Nm Device Not Available @@ -173,7 +175,7 @@ and false otherwise. .Sh NOTES The .Nm -is currently implemented only for i386 and amd64 architectures. +is currently implemented only for the i386 and amd64 architectures. .Pp There is no way to handle floating point exceptions raised from kernel mode.