Nicolas Thill
14 years ago
parent
395a1f4e0c
commit
734e6e5fd3
@ -0,0 +1,11 @@
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--- a/arch/um/Makefile-i386
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+++ b/arch/um/Makefile-i386
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@@ -35,7 +35,7 @@ cflags-y += -ffreestanding
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# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
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# a lot more stack due to the lack of sharing of stacklots. Also, gcc
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# 4.3.0 needs -funit-at-a-time for extern inline functions.
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-KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
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+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0403 ] ; then \
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echo $(call cc-option,-fno-unit-at-a-time); \
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else echo $(call cc-option,-funit-at-a-time); fi ;)
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@ -0,0 +1,21 @@
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--- a/arch/um/Makefile-i386
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+++ b/arch/um/Makefile-i386
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@@ -39,4 +39,8 @@ KBUILD_CFLAGS += $(shell if [ $(call cc-
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echo $(call cc-option,-fno-unit-at-a-time); \
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else echo $(call cc-option,-funit-at-a-time); fi ;)
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+# disable compile-time buffer checks, enabled by default on Ubuntu 8.10
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+# and later
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+KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
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+
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KBUILD_CFLAGS += $(cflags-y)
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--- a/arch/um/Makefile-x86_64
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+++ b/arch/um/Makefile-x86_64
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@@ -24,3 +24,7 @@ LINK-y += -m64
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# Do unit-at-a-time unconditionally on x86_64, following the host
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KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
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+
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+# disable compile-time buffer checks, enabled by default on Ubuntu 8.10
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+# and later
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+KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
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@ -0,0 +1,38 @@
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um: remove PAGE_SIZE alignment in linker script causing kernel segfault.
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The linker script cleanup that I did in commit
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5d150a97f9391f5bcd7ba0d59d7a11c3de3cea80 accidentally introduced an
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ALIGN(PAGE_SIZE) when converting to use INIT_TEXT_SECTION; Richard
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Weinberger reported that this causes the kernel to segfault with
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CONFIG_STATIC_LINK=y.
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I'm not certain why this extra alignment is a problem, but it seems likely
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it is because previously
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__init_begin = _stext = _text = _sinittext
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and with the extra ALIGN(PAGE_SIZE), _sinittext becomes different from the
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rest. So there is likely a bug here where something is assuming that
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_sinittext is the same as one of those other symbols. But reverting the
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accidental change fixes the regression, so it seems worth committing that
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now.
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Signed-off-by: Tim Abbott <tabbott@ksplice.com>
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Reported-by: richard -rw- weinberger <richard.weinberger@gmail.com>
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Cc: Jeff Dike <jdike@addtoit.com>
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Cc: user-mode-linux-devel@lists.sourceforge.net
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---
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arch/um/kernel/uml.lds.S | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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--- a/arch/um/kernel/uml.lds.S
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+++ b/arch/um/kernel/uml.lds.S
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@@ -22,7 +22,7 @@ SECTIONS
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_text = .;
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_stext = .;
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__init_begin = .;
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- INIT_TEXT_SECTION(PAGE_SIZE)
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+ INIT_TEXT_SECTION(0)
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. = ALIGN(PAGE_SIZE);
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.text :
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@ -0,0 +1,50 @@
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--- a/arch/um/kernel/dyn.lds.S
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+++ b/arch/um/kernel/dyn.lds.S
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@@ -50,8 +50,21 @@ SECTIONS
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.rela.got : { *(.rela.got) }
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.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
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.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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- .rel.plt : { *(.rel.plt) }
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- .rela.plt : { *(.rela.plt) }
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+ /* Deal with multilib libc */
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+ .rel.plt :
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+ {
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+ *(.rel.plt)
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+ PROVIDE_HIDDEN (__rel_iplt_start = .);
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+ *(.rel.iplt)
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+ PROVIDE_HIDDEN (__rel_iplt_end = .);
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+ }
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+ .rela.plt :
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+ {
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+ *(.rela.plt)
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+ PROVIDE_HIDDEN (__rela_iplt_start = .);
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+ *(.rela.iplt)
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+ PROVIDE_HIDDEN (__rela_iplt_end = .);
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+ }
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.init : {
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KEEP (*(.init))
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} =0x90909090
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--- a/arch/um/kernel/uml.lds.S
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+++ b/arch/um/kernel/uml.lds.S
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@@ -35,6 +35,21 @@ SECTIONS
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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}
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+ /* Deal with multilib libc */
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+ .rel.plt :
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+ {
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+ *(.rel.plt)
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+ PROVIDE_HIDDEN (__rel_iplt_start = .);
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+ *(.rel.iplt)
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+ PROVIDE_HIDDEN (__rel_iplt_end = .);
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+ }
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+ .rela.plt :
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+ {
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+ *(.rela.plt)
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+ PROVIDE_HIDDEN (__rela_iplt_start = .);
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+ *(.rela.iplt)
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+ PROVIDE_HIDDEN (__rela_iplt_end = .);
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+ }
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. = ALIGN(PAGE_SIZE);
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.syscall_stub : {
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@ -0,0 +1,14 @@
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make ZLIB_DEFLATE visible, so that we can choose whether we want it built-in
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or as a module
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--- a/lib/Kconfig
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+++ b/lib/Kconfig
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@@ -95,7 +95,7 @@ config ZLIB_INFLATE
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tristate
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config ZLIB_DEFLATE
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- tristate
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+ tristate "Zlib compression"
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config LZO_COMPRESS
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tristate
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