Merge branch 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

Pull UML fixes from Richard Weinberger:
 "No new stuff, just fixes"

* 'for-linus-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Add missing NR_CPUS include
  um: Fix to call read_initrd after init_bootmem
  um: Include kbuild.h instead of duplicating its macros
  um: Fix PTRACE_POKEUSER on x86_64
  um: Set number of CPUs
  um: Fix _print_addr()

arch/um/Kconfig.common

@@ -57,3 +57,8 @@ config HZ
 config SUBARCH
 	string
 	option env="SUBARCH"
+
+config NR_CPUS
+	int
+	range 1 1
+	default 1

arch/um/kernel/initrd.c

@@ -14,7 +14,7 @@
 static char *initrd __initdata = NULL;
 static int load_initrd(char *filename, void *buf, int size);
 
-static int __init read_initrd(void)
+int __init read_initrd(void)
 {
 	void *area;
 	long long size;
@@ -46,8 +46,6 @@ static int __init read_initrd(void)
 	return 0;
 }
 
-__uml_postsetup(read_initrd);
-
 static int __init uml_initrd_setup(char *line, int *add)
 {
 	initrd = line;

arch/um/kernel/sysrq.c

@@ -20,10 +20,8 @@
 
 static void _print_addr(void *data, unsigned long address, int reliable)
 {
-	pr_info(" [<%08lx>]", address);
+	pr_info(" [<%08lx>] %s%pF\n", address, reliable ? "" : "? ",
-	pr_cont(" %s", reliable ? "" : "? ");
+		(void *)address);
-	print_symbol("%s", address);
-	pr_cont("\n");
 }
 
 static const struct stacktrace_ops stackops = {

arch/um/kernel/um_arch.c

@@ -338,11 +338,17 @@ int __init linux_main(int argc, char **argv)
 	return start_uml();
 }
 
+int __init __weak read_initrd(void)
+{
+	return 0;
+}
+
 void __init setup_arch(char **cmdline_p)
 {
 	stack_protections((unsigned long) &init_thread_info);
 	setup_physmem(uml_physmem, uml_reserved, physmem_size, highmem);
 	mem_total_pages(physmem_size, iomem_size, highmem);
+	read_initrd();
 
 	paging_init();
 	strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);

arch/um/os-Linux/skas/process.c

@@ -21,6 +21,7 @@
 #include <registers.h>
 #include <skas.h>
 #include <sysdep/stub.h>
+#include <linux/threads.h>
 
 int is_skas_winch(int pid, int fd, void *data)
 {
@@ -233,9 +234,6 @@ static int userspace_tramp(void *stack)
 	return 0;
 }
 
-/* Each element set once, and only accessed by a single processor anyway */
-#undef NR_CPUS
-#define NR_CPUS 1
 int userspace_pid[NR_CPUS];
 
 int start_userspace(unsigned long stub_stack)

arch/x86/um/ptrace_64.c

@@ -125,7 +125,7 @@ int poke_user(struct task_struct *child, long addr, long data)
 	else if ((addr >= offsetof(struct user, u_debugreg[0])) &&
 		(addr <= offsetof(struct user, u_debugreg[7]))) {
 		addr -= offsetof(struct user, u_debugreg[0]);
-		addr = addr >> 2;
+		addr = addr >> 3;
 		if ((addr == 4) || (addr == 5))
 			return -EIO;
 		child->thread.arch.debugregs[addr] = data;

arch/x86/um/shared/sysdep/kernel-offsets.h

@@ -2,16 +2,9 @@
 #include <linux/sched.h>
 #include <linux/elf.h>
 #include <linux/crypto.h>
+#include <linux/kbuild.h>
 #include <asm/mman.h>
 
-#define DEFINE(sym, val) \
-	asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
-#define BLANK() asm volatile("\n->" : : )
-
-#define OFFSET(sym, str, mem) \
-	DEFINE(sym, offsetof(struct str, mem));
-
 void foo(void)
 {
 #include <common-offsets.h>