Merge branch 'for-linus-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

Pull UML updates from Richard Weinberger:

 - remove hppfs ("HonePot ProcFS")

 - initial support for musl libc

 - uaccess cleanup

 - random cleanups and bug fixes all over the place

* 'for-linus-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (21 commits)
  um: Don't pollute kernel namespace with uapi
  um: Include sys/types.h for makedev(), major(), minor()
  um: Do not use stdin and stdout identifiers for struct members
  um: Do not use __ptr_t type for stack_t's .ss pointer
  um: Fix mconsole dependency
  um: Handle tracehook_report_syscall_entry() result
  um: Remove copy&paste code from init.h
  um: Stop abusing __KERNEL__
  um: Catch unprotected user memory access
  um: Fix warning in setup_signal_stack_si()
  um: Rework uaccess code
  um: Add uaccess.h to ldt.c
  um: Add uaccess.h to syscalls_64.c
  um: Add asm/elf.h to vma.c
  um: Cleanup mem_32/64.c headers
  um: Remove hppfs
  um: Move syscall() declaration into os.h
  um: kernel: ksyms: Export symbol syscall() for fixing modpost issue
  um/os-Linux: Use char[] for syscall_stub declarations
  um: Use char[] for linker script address declarations
  ...

15 files changed, 25 insertions, 10 deletions

diff --git a/arch/x86/um/asm/checksum.h b/arch/x86/um/asm/checksum.h
index 4b181b74454f..ee940185e89f 100644
--- a/arch/x86/um/asm/checksum.h
+++ b/arch/x86/um/asm/checksum.h
@@ -3,6 +3,7 @@
 
 #include <linux/string.h>
 #include <linux/in6.h>
+#include <linux/uaccess.h>
 
 /*
  * computes the checksum of a memory block at buff, length len,
diff --git a/arch/x86/um/asm/elf.h b/arch/x86/um/asm/elf.h
index 0a656b727b1a..548197212a45 100644
--- a/arch/x86/um/asm/elf.h
+++ b/arch/x86/um/asm/elf.h
@@ -200,8 +200,6 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 
 typedef struct user_i387_struct elf_fpregset_t;
 
-#define task_pt_regs(t) (&(t)->thread.regs)
-
 struct task_struct;
 
 extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
diff --git a/arch/x86/um/asm/processor.h b/arch/x86/um/asm/processor.h
index 2a206d2b14ab..233ee09c1ce8 100644
--- a/arch/x86/um/asm/processor.h
+++ b/arch/x86/um/asm/processor.h
@@ -28,6 +28,8 @@ static inline void rep_nop(void)
 #define cpu_relax()		rep_nop()
 #define cpu_relax_lowlatency()	cpu_relax()
 
+#define task_pt_regs(t) (&(t)->thread.regs)
+
 #include <asm/processor-generic.h>
 
 #endif
diff --git a/arch/x86/um/asm/segment.h b/arch/x86/um/asm/segment.h
index 45183fcd10b6..41dd5e1f3cd7 100644
--- a/arch/x86/um/asm/segment.h
+++ b/arch/x86/um/asm/segment.h
@@ -7,4 +7,12 @@ extern int host_gdt_entry_tls_min;
 #define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min
 #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
 
+typedef struct {
+	unsigned long seg;
+} mm_segment_t;
+
+#define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
+#define KERNEL_DS	MAKE_MM_SEG(~0UL)
+#define USER_DS		MAKE_MM_SEG(TASK_SIZE)
+
 #endif
diff --git a/arch/x86/um/ldt.c b/arch/x86/um/ldt.c
index 5c0b711d2433..9701a4fd7bf2 100644
--- a/arch/x86/um/ldt.c
+++ b/arch/x86/um/ldt.c
@@ -6,6 +6,7 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/uaccess.h>
 #include <asm/unistd.h>
 #include <os.h>
 #include <skas.h>
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index f40281e5d6a2..744afdc18cf3 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -7,8 +7,7 @@
  */
 
 #include <linux/mm.h>
-#include <asm/page.h>
-#include <asm/mman.h>
+#include <asm/elf.h>
 
 static struct vm_area_struct gate_vma;
 
diff --git a/arch/x86/um/mem_64.c b/arch/x86/um/mem_64.c
index f8fecaddcc0d..7642e2e2aa61 100644
--- a/arch/x86/um/mem_64.c
+++ b/arch/x86/um/mem_64.c
@@ -1,6 +1,5 @@
 #include <linux/mm.h>
-#include <asm/page.h>
-#include <asm/mman.h>
+#include <asm/elf.h>
 
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
diff --git a/arch/x86/um/ptrace_32.c b/arch/x86/um/ptrace_32.c
index ce3dd4f36f3f..a29756f2d940 100644
--- a/arch/x86/um/ptrace_32.c
+++ b/arch/x86/um/ptrace_32.c
@@ -6,6 +6,7 @@
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <asm/uaccess.h>
+#include <asm/ptrace-abi.h>
 #include <skas.h>
 
 extern int arch_switch_tls(struct task_struct *to);
diff --git a/arch/x86/um/ptrace_64.c b/arch/x86/um/ptrace_64.c
index 3b52bf0b418a..a629694ee750 100644
--- a/arch/x86/um/ptrace_64.c
+++ b/arch/x86/um/ptrace_64.c
@@ -11,6 +11,7 @@
 #define __FRAME_OFFSETS
 #include <asm/ptrace.h>
 #include <asm/uaccess.h>
+#include <asm/ptrace-abi.h>
 
 /*
  * determines which flags the user has access to.
diff --git a/arch/x86/um/shared/sysdep/tls.h b/arch/x86/um/shared/sysdep/tls.h
index 27cce00c6b30..a682db13df23 100644
--- a/arch/x86/um/shared/sysdep/tls.h
+++ b/arch/x86/um/shared/sysdep/tls.h
@@ -1,7 +1,7 @@
 #ifndef _SYSDEP_TLS_H
 #define _SYSDEP_TLS_H
 
-# ifndef __KERNEL__
+#ifdef __UM_HOST__
 
 /* Change name to avoid conflicts with the original one from <asm/ldt.h>, which
  * may be named user_desc (but in 2.4 and in header matching its API was named
@@ -22,11 +22,11 @@ typedef struct um_dup_user_desc {
 #endif
 } user_desc_t;
 
-# else /* __KERNEL__ */
+#else /* __UM_HOST__ */
 
 typedef struct user_desc user_desc_t;
 
-# endif /* __KERNEL__ */
+#endif /* __UM_HOST__ */
 
 extern int os_set_thread_area(user_desc_t *info, int pid);
 extern int os_get_thread_area(user_desc_t *info, int pid);
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index 592491d1d70d..06934a8a4872 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -541,7 +541,8 @@ int setup_signal_stack_si(unsigned long stack_top, struct ksignal *ksig,
 	 */
 	/* x86-64 should always use SA_RESTORER. */
 	if (ksig->ka.sa.sa_flags & SA_RESTORER)
-		err |= __put_user(ksig->ka.sa.sa_restorer, &frame->pretcode);
+		err |= __put_user((void *)ksig->ka.sa.sa_restorer,
+				  &frame->pretcode);
 	else
 		/* could use a vstub here */
 		return err;
diff --git a/arch/x86/um/syscalls_64.c b/arch/x86/um/syscalls_64.c
index adb08eb5c22a..e6552275320b 100644
--- a/arch/x86/um/syscalls_64.c
+++ b/arch/x86/um/syscalls_64.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/sched.h>
+#include <linux/uaccess.h>
 #include <asm/prctl.h> /* XXX This should get the constants from libc */
 #include <os.h>
 
diff --git a/arch/x86/um/tls_32.c b/arch/x86/um/tls_32.c
index 80ffa5b9982d..48e38584d5c1 100644
--- a/arch/x86/um/tls_32.c
+++ b/arch/x86/um/tls_32.c
@@ -7,6 +7,7 @@
 #include <linux/sched.h>
 #include <linux/syscalls.h>
 #include <asm/uaccess.h>
+#include <asm/ptrace-abi.h>
 #include <os.h>
 #include <skas.h>
 #include <sysdep/tls.h>
diff --git a/arch/x86/um/tls_64.c b/arch/x86/um/tls_64.c
index d22363cb854e..3ad714373d7f 100644
--- a/arch/x86/um/tls_64.c
+++ b/arch/x86/um/tls_64.c
@@ -1,4 +1,5 @@
 #include <linux/sched.h>
+#include <asm/ptrace-abi.h>
 
 void clear_flushed_tls(struct task_struct *task)
 {
diff --git a/arch/x86/um/vdso/vma.c b/arch/x86/um/vdso/vma.c
index 916cda4cd5b4..237c6831e095 100644
--- a/arch/x86/um/vdso/vma.c
+++ b/arch/x86/um/vdso/vma.c
@@ -10,6 +10,7 @@
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <asm/page.h>
+#include <asm/elf.h>
 #include <linux/init.h>
 
 static unsigned int __read_mostly vdso_enabled = 1;