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authorSam Ravnborg <sam@ravnborg.org>2012-05-15 22:10:22 +0200
committerDavid S. Miller <davem@davemloft.net>2012-05-15 13:15:51 -0700
commit3462285df99e14a7866d7e35cd3c948a324af014 (patch)
tree4ce842ae1f44ec30283f5dd84226b8c8bed545d5 /Documentation/sparc
parent38753586a30956431593d36d24af1c5f09248f4a (diff)
downloadleg-kernel-3462285df99e14a7866d7e35cd3c948a324af014.tar.gz
sparc: remove obsolete documentation
When we killed btfixup this readme no longer has any value. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/sparc')
-rw-r--r--Documentation/sparc/README-2.546
1 files changed, 0 insertions, 46 deletions
diff --git a/Documentation/sparc/README-2.5 b/Documentation/sparc/README-2.5
deleted file mode 100644
index 806fe490a56d..000000000000
--- a/Documentation/sparc/README-2.5
+++ /dev/null
@@ -1,46 +0,0 @@
-BTFIXUP
--------
-
-To build new kernels you have to issue "make image". The ready kernel
-in ELF format is placed in arch/sparc/boot/image. Explanation is below.
-
-BTFIXUP is a unique feature of Linux/sparc among other architectures,
-developed by Jakub Jelinek (I think... Obviously David S. Miller took
-part, too). It allows to boot the same kernel at different
-sub-architectures, such as sun4c, sun4m, sun4d, where SunOS uses
-different kernels. This feature is convinient for people who you move
-disks between boxes and for distrution builders.
-
-To function, BTFIXUP must link the kernel "in the draft" first,
-analyze the result, write a special stub code based on that, and
-build the final kernel with the stub (btfix.o).
-
-Kai Germaschewski improved the build system of the kernel in the 2.5 series
-significantly. Unfortunately, the traditional way of running the draft
-linking from architecture specific Makefile before the actual linking
-by generic Makefile is nearly impossible to support properly in the
-new build system. Therefore, the way we integrate BTFIXUP with the
-build system was changed in 2.5.40. Now, generic Makefile performs
-the draft linking and stores the result in file vmlinux. Architecture
-specific post-processing invokes BTFIXUP machinery and final linking
-in the same way as other architectures do bootstraps.
-
-Implications of that change are as follows.
-
-1. Hackers must type "make image" now, instead of just "make", in the same
- way as s390 people do now. It is analogous to "make bzImage" on i386.
- This does NOT affect sparc64, you continue to use "make" to build sparc64
- kernels.
-
-2. vmlinux is not the final kernel, so RPM builders have to adjust
- their spec files (if they delivered vmlinux for debugging).
- System.map generated for vmlinux is still valid.
-
-3. Scripts that produce a.out images have to be changed. First, if they
- invoke make, they have to use "make image". Second, they have to pick up
- the new kernel in arch/sparc/boot/image instead of vmlinux.
-
-4. Since we are compliant with Kai's build system now, make -j is permitted.
-
--- Pete Zaitcev
-zaitcev@yahoo.com