svn commit: r267785 - head/share/man/man9
Christian Brueffer
brueffer at FreeBSD.org
Mon Jun 23 12:43:31 UTC 2014
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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