diff options
Diffstat (limited to 'arch/x86/vdso/vdso32-setup.c')
| -rw-r--r-- | arch/x86/vdso/vdso32-setup.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c index 348f1341e1c8..cf058fecfcee 100644 --- a/arch/x86/vdso/vdso32-setup.c +++ b/arch/x86/vdso/vdso32-setup.c @@ -162,7 +162,7 @@ static __init void relocate_vdso(Elf32_Ehdr *ehdr) Elf32_Shdr *shdr; int i; - BUG_ON(memcmp(ehdr->e_ident, ELFMAG, 4) != 0 || + BUG_ON(memcmp(ehdr->e_ident, ELFMAG, SELFMAG) != 0 || !elf_check_arch_ia32(ehdr) || ehdr->e_type != ET_DYN); @@ -210,8 +210,12 @@ static int use_sysenter __read_mostly = -1; /* May not be __init: called during resume */ void syscall32_cpu_init(void) { - if (use_sysenter < 0) - use_sysenter = (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL); + if (use_sysenter < 0) { + if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) + use_sysenter = 1; + if (boot_cpu_data.x86_vendor == X86_VENDOR_CENTAUR) + use_sysenter = 1; + } /* Load these always in case some future AMD CPU supports SYSENTER from compat mode too. */ @@ -299,8 +303,6 @@ int __init sysenter_setup(void) #ifdef CONFIG_X86_32 gate_vma_init(); - - printk("Compat vDSO mapped to %08lx.\n", __fix_to_virt(FIX_VDSO)); #endif if (!vdso32_sysenter()) { @@ -325,6 +327,9 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int exstack) int ret = 0; bool compat; + if (vdso_enabled == VDSO_DISABLED) + return 0; + down_write(&mm->mmap_sem); /* Test compat mode once here, in case someone |