When declaring __syscall_stub_start, use the same type in UML userspace
code as in arch/um/include/asm/sections.h.
While at it, also declare batch_syscall_stub as char[].
Signed-off-by: Nicolas Iooss <nicolas.iooss_li...@m4x.org>
---
arch/um/os-Linux/skas/mem.c | 6 +++---
arch/um/os-Linux/skas/process.c | 11 +++++------
2 files changed, 8 insertions(+), 9 deletions(-)
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 689b18db798f..abb02becca80 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -19,7 +19,7 @@
#include <sysdep/ptrace.h>
#include <sysdep/stub.h>
-extern unsigned long batch_syscall_stub, __syscall_stub_start;
+extern char batch_syscall_stub[], __syscall_stub_start[];
extern void wait_stub_done(int pid);
@@ -39,8 +39,8 @@ static int __init init_syscall_regs(void)
{
get_safe_registers(syscall_regs, NULL);
syscall_regs[REGS_IP_INDEX] = STUB_CODE +
- ((unsigned long) &batch_syscall_stub -
- (unsigned long) &__syscall_stub_start);
+ ((unsigned long) batch_syscall_stub -
+ (unsigned long) __syscall_stub_start);
return 0;
}
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 908579f2b0ab..fa934d0c8932 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -193,7 +193,7 @@ static void handle_trap(int pid, struct uml_pt_regs *regs,
handle_syscall(regs);
}
-extern int __syscall_stub_start;
+extern char __syscall_stub_start[];
static int userspace_tramp(void *stack)
{
@@ -218,7 +218,7 @@ static int userspace_tramp(void *stack)
*/
int fd;
unsigned long long offset;
- fd = phys_mapping(to_phys(&__syscall_stub_start), &offset);
+ fd = phys_mapping(to_phys(__syscall_stub_start), &offset);
addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
if (addr == MAP_FAILED) {
@@ -245,7 +245,7 @@ static int userspace_tramp(void *stack)
unsigned long v = STUB_CODE +
(unsigned long) stub_segv_handler -
- (unsigned long) &__syscall_stub_start;
+ (unsigned long) __syscall_stub_start;
set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE);
sigemptyset(&sa.sa_mask);
@@ -474,7 +474,7 @@ static int __init init_thread_regs(void)
/* Set parent's instruction pointer to start of clone-stub */
thread_regs[REGS_IP_INDEX] = STUB_CODE +
(unsigned long) stub_clone_handler -
- (unsigned long) &__syscall_stub_start;
+ (unsigned long) __syscall_stub_start;
thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE -
sizeof(void *);
#ifdef __SIGNAL_FRAMESIZE
@@ -582,8 +582,7 @@ int map_stub_pages(int fd, unsigned long code, unsigned
long data,
struct proc_mm_op mmop;
int n;
unsigned long long code_offset;
- int code_fd = phys_mapping(to_phys((void *) &__syscall_stub_start),
- &code_offset);
+ int code_fd = phys_mapping(to_phys(__syscall_stub_start), &code_offset);
mmop = ((struct proc_mm_op) { .op = MM_MMAP,
.u =
--
2.1.1
------------------------------------------------------------------------------
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