diff options
| -rw-r--r-- | arch/s390/include/asm/elf.h | 11 | ||||
| -rw-r--r-- | arch/s390/kernel/vdso.c | 21 |
2 files changed, 8 insertions, 24 deletions
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index 66d51ad090ab..6476655d7ce9 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -146,8 +146,6 @@ typedef s390_compat_regs compat_elf_gregset_t; #include <asm/vdso.h> -extern unsigned int vdso_enabled; - /* * This is used to ensure we don't load something for the wrong architecture. */ @@ -268,11 +266,10 @@ do { \ #define STACK_RND_MASK MMAP_RND_MASK /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ -#define ARCH_DLINFO \ -do { \ - if (vdso_enabled) \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, \ - (unsigned long)current->mm->context.vdso_base); \ +#define ARCH_DLINFO \ +do { \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, \ + (unsigned long)current->mm->context.vdso_base); \ } while (0) struct linux_binprm; diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c index 8c4e07d533c8..f786246e621a 100644 --- a/arch/s390/kernel/vdso.c +++ b/arch/s390/kernel/vdso.c @@ -37,18 +37,6 @@ enum vvar_pages { VVAR_NR_PAGES, }; -unsigned int __read_mostly vdso_enabled = 1; - -static int __init vdso_setup(char *str) -{ - bool enabled; - - if (!kstrtobool(str, &enabled)) - vdso_enabled = enabled; - return 1; -} -__setup("vdso=", vdso_setup); - #ifdef CONFIG_TIME_NS struct vdso_data *arch_get_vdso_data(void *vvar_page) { @@ -176,7 +164,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) int rc; BUILD_BUG_ON(VVAR_NR_PAGES != __VVAR_PAGES); - if (!vdso_enabled || is_compat_task()) + if (is_compat_task()) return 0; if (mmap_write_lock_killable(mm)) return -EINTR; @@ -218,10 +206,9 @@ static int __init vdso_init(void) vdso_pages = (vdso64_end - vdso64_start) >> PAGE_SHIFT; pages = kcalloc(vdso_pages + 1, sizeof(struct page *), GFP_KERNEL); - if (!pages) { - vdso_enabled = 0; - return -ENOMEM; - } + if (!pages) + panic("failed to allocate VDSO pages"); + for (i = 0; i < vdso_pages; i++) pages[i] = virt_to_page(vdso64_start + i * PAGE_SIZE); pages[vdso_pages] = NULL; |