diff options
Diffstat (limited to 'arch/x86/kernel/process_64.c')
| -rw-r--r-- | arch/x86/kernel/process_64.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 63236d8f84bf..f240a465920b 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -49,6 +49,7 @@ #include <asm/debugreg.h> #include <asm/switch_to.h> #include <asm/xen/hypervisor.h> +#include <asm/vdso.h> asmlinkage extern void ret_from_fork(void); @@ -524,6 +525,17 @@ void set_personality_ia32(bool x32) } EXPORT_SYMBOL_GPL(set_personality_ia32); +static long prctl_map_vdso(const struct vdso_image *image, unsigned long addr) +{ + int ret; + + ret = map_vdso_once(image, addr); + if (ret) + return ret; + + return (long)image->size; +} + long do_arch_prctl(struct task_struct *task, int code, unsigned long addr) { int ret = 0; @@ -577,6 +589,19 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr) break; } +#ifdef CONFIG_CHECKPOINT_RESTORE +#ifdef CONFIG_X86_X32 + case ARCH_MAP_VDSO_X32: + return prctl_map_vdso(&vdso_image_x32, addr); +#endif +#if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION + case ARCH_MAP_VDSO_32: + return prctl_map_vdso(&vdso_image_32, addr); +#endif + case ARCH_MAP_VDSO_64: + return prctl_map_vdso(&vdso_image_64, addr); +#endif + default: ret = -EINVAL; break; |