|
|
| (52 intermediate revisions by 17 users not shown) |
| Line 1: |
Line 1: |
| ==Linux Kernel==
| | {{header|docs}} |
|
| |
|
| This section covers changes and important information regarding the {{Template:DocsDict/KernelVer}} based kernel in Fedora {{Template:DocsDict/BeatsVer}}. The {{Template:DocsDict/KernelVer}} kernel includes:
| | {{Docs_beat_closed}} |
|
| |
| <!-- The following is not new but we can retain for people moving to Fedora 9 from Fedora 7. Remove for Fedora 10. PWF 2008-03-17
| |
| -->
| |
| * Tickless support for x86 64bit systems (32 bit was added previously), which greatly improves power management.
| |
| * Some elements of the realtime kernel project.
| |
| * The kernel has a new version naming scheme to more closely match the upstream version naming scheme.
| |
| * The kernel spec file is now named <code>kernel.spec</code> rather than <code>kernel-2.6.spec</code>.
| |
| * The kernel spec file has new macros that ease the kernel building process. Refer to http://fedoraproject.org/wiki/Docs/CustomKernel for further information.
| |
| * The kernel in Fedora {{Template:DocsDict/BeatsVer}} no longer loads modules by default for ISA sound cards. Load the module by hand using the command <code>modprobe module-name</code>, or put an entry in <code>/etc/modprobe.conf</code>. For example, for the Creative SoundBlaster AWE64, add the following entry:
| |
| <pre>install snd-sbawe
| |
| </pre>
| |
| <!-- End stuff to be removed for Fedora 10. PWF 2008-03-17
| |
| -->
| |
| * The Fedora kernel offers <code>paravirt_ops</code> support in <code>domU</code>, as part of the kernel team's efforts to reduce the work required to produce current Xen kernels.
| |
| * Xen fully virtualized guests can directly boot a kernel and <code>initrd</code> image and pass kernel boot args. For more details refer to http://fedoraproject.org/wiki/Features/XenFullvirtKernelBoot.
| |
|
| |
|
| === Version ===
| | [[Category:Docs Project]] |
| | | [[Category:Draft documentation]] |
| Fedora may include additional patches to the kernel for improvements, bug fixes, or additional features. For this reason, the Fedora kernel may not be line-for-line equivalent to the so-called ''vanilla kernel'' from the kernel.org web site:
| | [[Category:Documentation beats]] |
| | |
| http://www.kernel.org/
| |
| | |
| To obtain a list of these patches, download the source RPM package and run the following command against it:
| |
| | |
| <pre>rpm -qpl kernel-<version>.src.rpm</pre>
| |
| | |
| === Changelog ===
| |
| | |
| To retrieve a log of changes to the package, run the following command:
| |
| | |
| <pre>rpm -q --changelog kernel-<version></pre>
| |
| | |
| If you need a user friendly version of the changelog, refer to http://wiki.kernelnewbies.org/LinuxChanges. A short and full diff of the kernel is available from http://kernel.org/git. The Fedora version kernel is based on the Linus tree.
| |
| | |
| Customizations made for the Fedora version are available from http://cvs.fedoraproject.org.
| |
| | |
| === Kernel Flavors ===
| |
| | |
| {{Anchor|Kernel_Flavors}}
| |
| | |
| Fedora {{Template:DocsDict/BeatsVer}} includes the following kernel builds:
| |
|
| |
| * Native kernel, for use in most systems. Configured sources are available in the <code>kernel-devel</code> package.
| |
| | |
| * The kernel-PAE, for use in 32-bit x86 systems with more than 4GB of RAM, or with CPUs that have a NX (No eXecute) feature. This kernel support both uniprocessor and multi-processor systems. Configured sources are available in the <code>kernel-PAE-devel</code> package.
| |
| | |
| * Virtualization kernel for use with the Xen emulator package. Configured sources are available in the <code>kernel-xen-devel</code> package.
| |
| | |
| You may install kernel headers for all four kernel flavors at the same time. The files are installed in the <code>/usr/src/kernels/<version>[-PAE|-xen|-kdump] -<arch>/</code> tree. Use the following command:
| |
| | |
| <pre>su -c 'yum install kernel{,-PAE,-xen,-kdump}-devel'</pre>
| |
| | |
| Select one or more of these flavors, separated by commas and no spaces, as appropriate. Enter the root password when prompted.
| |
| | |
| {{Admon/note|x86 Kernel Includes Kdump|Both the x86_64 and the i686 kernels are relocatable, so they no longer require a separate kernel for kdump capability. PPC64 still requires a separate kdump kernel.}}
| |
| | |
| {{Admon/note|Default Kernel Provides SMP|There is no separate SMP kernel available for Fedora on i386, x86_64, and ppc64. Multiprocessor support is provided by the native kernel.}}
| |
| | |
| {{Admon/note|PowerPC Kernel Support|There is no support for Xen or kdump for the PowerPC architecture in Fedora. 32-bit PowerPC does still have a separate SMP kernel.}}
| |
| | |
| === Preparing for Kernel Development ===
| |
| | |
| Fedora {{Template:DocsDict/BeatsVer}} does not include the kernel-source package provided by older versions since only the kernel-devel package is required now to build external modules. Configured sources are available, as described [#Kernel_Flavors above].
| |
|
| |
| {{Admon/important|Custom Kernel Building|For information on kernel development and working with custom kernels, refer to http://fedoraproject.org/wiki/Building_a_custom_kernel.}}
| |
| | |
| === Reporting Bugs ===
| |
| | |
| Refer to http://kernel.org/pub/linux/docs/lkml/reporting-bugs.html for information on reporting bugs in the Linux kernel. You may also use http://bugzilla.redhat.com for reporting bugs that are specific to Fedora.
| |
