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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-13 10:20:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-13 10:20:02 -0700
commitec059019b7e6ae3926a8e1dec02a62d64dd8c060 (patch)
treeab60e0f2d21154dda05f58af310a66c94179d70a
parent1251704a631b62591ad1d1b6ead252e9e597d5f5 (diff)
parentce4586063f1af780b1c6b7e344907e6f9c1ba59a (diff)
downloadlinux-stericsson-ec059019b7e6ae3926a8e1dec02a62d64dd8c060.tar.gz
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()
-rw-r--r--arch/um/Kconfig.common5
-rw-r--r--arch/um/kernel/initrd.c4
-rw-r--r--arch/um/kernel/sysrq.c6
-rw-r--r--arch/um/kernel/um_arch.c6
-rw-r--r--arch/um/os-Linux/skas/process.c4
-rw-r--r--arch/x86/um/ptrace_64.c2
-rw-r--r--arch/x86/um/shared/sysdep/kernel-offsets.h9
7 files changed, 17 insertions, 19 deletions
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index ed9c5b5ff028..85f6dd204ab6 100644
--- a/arch/um/Kconfig.common
+++ b/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
diff --git a/arch/um/kernel/initrd.c b/arch/um/kernel/initrd.c
index 48bae81f8dca..6f6e7896e53f 100644
--- a/arch/um/kernel/initrd.c
+++ b/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;
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index a76295f7ede9..6b995e870d55 100644
--- a/arch/um/kernel/sysrq.c
+++ b/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_cont(" %s", reliable ? "" : "? ");
- print_symbol("%s", address);
- pr_cont("\n");
+ pr_info(" [<%08lx>] %s%pF\n", address, reliable ? "" : "? ",
+ (void *)address);
}
static const struct stacktrace_ops stackops = {
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 4b85acd4020c..64a1fd06f3fd 100644
--- a/arch/um/kernel/um_arch.c
+++ b/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);
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 23025d645160..03b3c4cc7735 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/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)
diff --git a/arch/x86/um/ptrace_64.c b/arch/x86/um/ptrace_64.c
index a5c9910d234f..09a085bde0d4 100644
--- a/arch/x86/um/ptrace_64.c
+++ b/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;
diff --git a/arch/x86/um/shared/sysdep/kernel-offsets.h b/arch/x86/um/shared/sysdep/kernel-offsets.h
index 46a9df99f3c5..7e1d35b6ad5c 100644
--- a/arch/x86/um/shared/sysdep/kernel-offsets.h
+++ b/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>