Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.arch / s390-08-06-personality.patch

diff --git a/src/patches/suse-2.6.27.31/patches.arch/s390-08-06-personality.patch b/src/patches/suse-2.6.27.31/patches.arch/s390-08-06-personality.patch
new file mode 100644 (file)
index 0000000..8c320c7
--- /dev/null
+++ b/src/patches/suse-2.6.27.31/patches.arch/s390-08-06-personality.patch
@@ -0,0 +1,52 @@
+From: Gerald Schaefer <geraldsc@de.ibm.com>
+Subject: kernel: setting 32 bit personality doesn't work
+References: bnc#466462
+
+Symptom:     Setting the personality from 64 bit to 32 bit and afterwards
+             issueing a uname system call will return that the environment
+             is still 64 bit. Some executables that rely on a correct 32 bit
+             environment don't work.
+Problem:     The SET_PERSONALITY macro compares the whole personality field
+             on each execve with PER_LINUX32. If that doesn't match personality
+             is set to PER_LINUX. When some higher order bits in the personality
+             field are set the personality is incorrectly changed from
+             PER_LINUX32 to PER_LINUX on execve.
+Solution:    Use the personality() function to mask out bits that shouldn't be
+             taken into account when comparing personality types.
+
+Acked-by: Hannes Reinecke <hare@suse.de>
+---
+ arch/s390/include/asm/elf.h |   20 ++++++++++----------
+ 1 file changed, 10 insertions(+), 10 deletions(-)
+
+Index: linux-sles11/arch/s390/include/asm/elf.h
+===================================================================
+--- linux-sles11.orig/arch/s390/include/asm/elf.h
++++ linux-sles11/arch/s390/include/asm/elf.h
+@@ -168,16 +168,16 @@ extern char elf_platform[];
+ #ifndef __s390x__
+ #define SET_PERSONALITY(ex, ibcs2) set_personality((ibcs2)?PER_SVR4:PER_LINUX)
+ #else /* __s390x__ */
+-#define SET_PERSONALITY(ex, ibcs2)                    \
+-do {                                                  \
+-      if (ibcs2)                                      \
+-              set_personality(PER_SVR4);              \
+-      else if (current->personality != PER_LINUX32)   \
+-              set_personality(PER_LINUX);             \
+-      if ((ex).e_ident[EI_CLASS] == ELFCLASS32)       \
+-              set_thread_flag(TIF_31BIT);             \
+-      else                                            \
+-              clear_thread_flag(TIF_31BIT);           \
++#define SET_PERSONALITY(ex, ibcs2)                                    \
++      do {                                                            \
++      if (ibcs2)                                                      \
++              set_personality(PER_SVR4);                              \
++      else if (personality(current->personality) != PER_LINUX32)      \
++              set_personality(PER_LINUX);                             \
++      if ((ex).e_ident[EI_CLASS] == ELFCLASS32)                       \
++              set_thread_flag(TIF_31BIT);                             \
++      else                                                            \
++              clear_thread_flag(TIF_31BIT);                           \
+ } while (0)
+ #endif /* __s390x__ */
+