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authorLinus Torvalds <torvalds@linux-foundation.org>2012-12-20 18:05:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-20 18:05:28 -0800
commit54d46ea993744c5408e39ce0cb4851e13cbea716 (patch)
tree8e38fa92cc2ae72e0353c44e1e68be9bf5a7a058 /arch/s390
parentf59dc2bb5a50b26ea751f9eac1c81e4cc7de5257 (diff)
parent50ececcfa7d1acee085b2c518cad495062db6379 (diff)
downloadvexpress-lsk-54d46ea993744c5408e39ce0cb4851e13cbea716.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull signal handling cleanups from Al Viro: "sigaltstack infrastructure + conversion for x86, alpha and um, COMPAT_SYSCALL_DEFINE infrastructure. Note that there are several conflicts between "unify SS_ONSTACK/SS_DISABLE definitions" and UAPI patches in mainline; resolution is trivial - just remove definitions of SS_ONSTACK and SS_DISABLED from arch/*/uapi/asm/signal.h; they are all identical and include/uapi/linux/signal.h contains the unified variant." Fixed up conflicts as per Al. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: alpha: switch to generic sigaltstack new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those generic compat_sys_sigaltstack() introduce generic sys_sigaltstack(), switch x86 and um to it new helper: compat_user_stack_pointer() new helper: restore_altstack() unify SS_ONSTACK/SS_DISABLE definitions new helper: current_user_stack_pointer() missing user_stack_pointer() instances Bury the conditionals from kernel_thread/kernel_execve series COMPAT_SYSCALL_DEFINE: infrastructure
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig2
-rw-r--r--arch/s390/include/asm/compat.h3
-rw-r--r--arch/s390/include/asm/unistd.h1
-rw-r--r--arch/s390/include/uapi/asm/signal.h6
4 files changed, 3 insertions, 9 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 32425af9d68..b5ea38c2564 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -137,8 +137,6 @@ config S390
select GENERIC_CLOCKEVENTS
select KTIME_SCALAR if 32BIT
select HAVE_ARCH_SECCOMP_FILTER
- select GENERIC_KERNEL_THREAD
- select GENERIC_KERNEL_EXECVE
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
select CLONE_BACKWARDS2
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 18cd6b59265..f8c6df6cd1f 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -7,6 +7,9 @@
#include <linux/sched.h>
#include <linux/thread_info.h>
+#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p(typeof(0?(t)0:0ULL), u64))
+#define __SC_DELOUSE(t,v) (t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v))
+
#define PSW32_MASK_PER 0x40000000UL
#define PSW32_MASK_DAT 0x04000000UL
#define PSW32_MASK_IO 0x02000000UL
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 086bb8eaf6a..63653087251 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -53,7 +53,6 @@
# define __ARCH_WANT_COMPAT_SYS_TIME
# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
# endif
-#define __ARCH_WANT_SYS_EXECVE
#define __ARCH_WANT_SYS_FORK
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_CLONE
diff --git a/arch/s390/include/uapi/asm/signal.h b/arch/s390/include/uapi/asm/signal.h
index 8c6a49e392e..2f43cfbf5f1 100644
--- a/arch/s390/include/uapi/asm/signal.h
+++ b/arch/s390/include/uapi/asm/signal.h
@@ -90,12 +90,6 @@ typedef unsigned long sigset_t;
#define SA_RESTORER 0x04000000
-/*
- * sigaltstack controls
- */
-#define SS_ONSTACK 1
-#define SS_DISABLE 2
-
#define MINSIGSTKSZ 2048
#define SIGSTKSZ 8192