Date: Mon, 23 Jun 2014 12:43:31 +0000 (UTC) From: Christian Brueffer <brueffer@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r267785 - head/share/man/man9 Message-ID: <201406231243.s5NChVPA012308@svn.freebsd.org>
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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.
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