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authorPierre Labastie <pieere@linuxfromscratch.org>2020-05-21 10:02:22 +0000
committerPierre Labastie <pieere@linuxfromscratch.org>2020-05-21 10:02:22 +0000
commit999631e8cf5f3916d0cb2e0d36905cc7dbef8a63 (patch)
tree743fd56f2630ca85177aae15896265e56a52496b /chapter08
parente14f0cbf8831bb81c237a5ee38bd82482183ef73 (diff)
Merge trunk r11852
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross-chap5@11853 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter08')
-rw-r--r--chapter08/kernel.xml10
1 files changed, 10 insertions, 0 deletions
diff --git a/chapter08/kernel.xml b/chapter08/kernel.xml
index 0033028cf..5bacd11a1 100644
--- a/chapter08/kernel.xml
+++ b/chapter08/kernel.xml
@@ -54,6 +54,16 @@
kernel compilation. Do not rely on the source tree being clean after
un-tarring.</para>
+ <!-- The following paragraph and sed should be only necessary on the 5.6
+ series, but check when 5.7 is out. -->
+ <para>When using <envar>CONFIG_STACKPROTECTOR_STRONG=y</envar>, and
+ compiling with GCC 10 and later, the default optimization is too
+ aggressive, and generates a kernel panic when booting. This can be
+ fixed with:</para>
+
+<screen><userinput remap="pre">sed -e '/cpu_startup/a asm("");' \
+ -i arch/x86/{kernel/smpboot.c,xen/smp_pv.c}</userinput></screen>
+
<!-- Support for compiling a keymap into the kernel is deliberately removed -->
<para>Configure the kernel via a menu-driven interface. For general