[uml] add support for 2.6.33
authorFlorian Fainelli <florian@openwrt.org>
Fri, 12 Mar 2010 14:24:17 +0000 (14:24 +0000)
committerFlorian Fainelli <florian@openwrt.org>
Fri, 12 Mar 2010 14:24:17 +0000 (14:24 +0000)
SVN-Revision: 20158

target/linux/uml/patches-2.6.33/001-gcc4_unit_at_a_time_i386_fix.patch [new file with mode: 0644]
target/linux/uml/patches-2.6.33/002-gcc4_unfortify_source.patch [new file with mode: 0644]
target/linux/uml/patches-2.6.33/003-fix_text_section.patch [new file with mode: 0644]
target/linux/uml/patches-2.6.33/901-lib_zlib_deflate_visible.patch [new file with mode: 0644]

diff --git a/target/linux/uml/patches-2.6.33/001-gcc4_unit_at_a_time_i386_fix.patch b/target/linux/uml/patches-2.6.33/001-gcc4_unit_at_a_time_i386_fix.patch
new file mode 100644 (file)
index 0000000..442c0ec
--- /dev/null
@@ -0,0 +1,11 @@
+--- a/arch/um/Makefile-i386
++++ b/arch/um/Makefile-i386
+@@ -35,7 +35,7 @@ cflags-y += -ffreestanding
+ # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
+ # a lot more stack due to the lack of sharing of stacklots.  Also, gcc
+ # 4.3.0 needs -funit-at-a-time for extern inline functions.
+-KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
++KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0403 ] ; then \
+                       echo $(call cc-option,-fno-unit-at-a-time); \
+                       else echo $(call cc-option,-funit-at-a-time); fi ;)
diff --git a/target/linux/uml/patches-2.6.33/002-gcc4_unfortify_source.patch b/target/linux/uml/patches-2.6.33/002-gcc4_unfortify_source.patch
new file mode 100644 (file)
index 0000000..2be33d0
--- /dev/null
@@ -0,0 +1,21 @@
+--- a/arch/um/Makefile-i386
++++ b/arch/um/Makefile-i386
+@@ -39,4 +39,8 @@ KBUILD_CFLAGS += $(shell if [ $(call cc-
+                       echo $(call cc-option,-fno-unit-at-a-time); \
+                       else echo $(call cc-option,-funit-at-a-time); fi ;)
++# disable compile-time buffer checks, enabled by default on Ubuntu 8.10 
++# and later
++KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
++
+ KBUILD_CFLAGS += $(cflags-y)
+--- a/arch/um/Makefile-x86_64
++++ b/arch/um/Makefile-x86_64
+@@ -24,3 +24,7 @@ LINK-y += -m64
+ # Do unit-at-a-time unconditionally on x86_64, following the host
+ KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
++
++# disable compile-time buffer checks, enabled by default on Ubuntu 8.10 
++# and later
++KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
diff --git a/target/linux/uml/patches-2.6.33/003-fix_text_section.patch b/target/linux/uml/patches-2.6.33/003-fix_text_section.patch
new file mode 100644 (file)
index 0000000..f973cfd
--- /dev/null
@@ -0,0 +1,40 @@
+um: remove PAGE_SIZE alignment in linker script causing kernel segfault.
+
+The linker script cleanup that I did in commit 
+5d150a97f9391f5bcd7ba0d59d7a11c3de3cea80 accidentally introduced an 
+ALIGN(PAGE_SIZE) when converting to use INIT_TEXT_SECTION; Richard 
+Weinberger reported that this causes the kernel to segfault with 
+CONFIG_STATIC_LINK=y.
+
+I'm not certain why this extra alignment is a problem, but it seems likely 
+it is because previously
+
+__init_begin = _stext = _text = _sinittext 
+
+and with the extra ALIGN(PAGE_SIZE), _sinittext becomes different from the 
+rest.  So there is likely a bug here where something is assuming that 
+_sinittext is the same as one of those other symbols.  But reverting the 
+accidental change fixes the regression, so it seems worth committing that 
+now.
+
+Signed-off-by: Tim Abbott <tabbott@ksplice.com>
+Reported-by: richard -rw- weinberger <richard.weinberger@gmail.com>
+Cc: Jeff Dike <jdike@addtoit.com>
+Cc: user-mode-linux-devel@lists.sourceforge.net
+---
+ arch/um/kernel/uml.lds.S |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
+index e7a6cca..664f942 100644
+--- a/arch/um/kernel/uml.lds.S
++++ b/arch/um/kernel/uml.lds.S
+@@ -22,7 +22,7 @@ SECTIONS
+   _text = .;
+   _stext = .;
+   __init_begin = .;
+-  INIT_TEXT_SECTION(PAGE_SIZE)
++  INIT_TEXT_SECTION(0)
+   . = ALIGN(PAGE_SIZE);
+   .text      :
diff --git a/target/linux/uml/patches-2.6.33/901-lib_zlib_deflate_visible.patch b/target/linux/uml/patches-2.6.33/901-lib_zlib_deflate_visible.patch
new file mode 100644 (file)
index 0000000..b71a673
--- /dev/null
@@ -0,0 +1,14 @@
+make ZLIB_DEFLATE visible, so that we can choose whether we want it built-in
+or as a module
+
+--- a/lib/Kconfig
++++ b/lib/Kconfig
+@@ -92,7 +92,7 @@ config ZLIB_INFLATE
+       tristate
+ config ZLIB_DEFLATE
+-      tristate
++      tristate "Zlib compression"
+ config LZO_COMPRESS
+       tristate