diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/asm-offsets.c | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/kprobes/core.c | 10 | ||||
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 10 |
4 files changed, 3 insertions, 32 deletions
diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c index fc2e90d3429a..083c01309027 100644 --- a/arch/x86/kernel/asm-offsets.c +++ b/arch/x86/kernel/asm-offsets.c @@ -99,8 +99,6 @@ void common(void) { OFFSET(TLB_STATE_user_pcid_flush_mask, tlb_state, user_pcid_flush_mask); /* Layout info for cpu_entry_area */ - OFFSET(CPU_ENTRY_AREA_tss, cpu_entry_area, tss); - OFFSET(CPU_ENTRY_AREA_entry_trampoline, cpu_entry_area, entry_trampoline); OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page); DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack)); DEFINE(MASK_entry_stack, (~(sizeof(struct entry_stack) - 1))); diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 44c4ef3d989b..2d5b1fa5f9c6 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1531,19 +1531,10 @@ EXPORT_PER_CPU_SYMBOL(__preempt_count); /* May not be marked __init: used by software suspend */ void syscall_init(void) { - extern char _entry_trampoline[]; - extern char entry_SYSCALL_64_trampoline[]; - - int cpu = smp_processor_id(); - unsigned long SYSCALL64_entry_trampoline = - (unsigned long)get_cpu_entry_area(cpu)->entry_trampoline + - (entry_SYSCALL_64_trampoline - _entry_trampoline); + int __maybe_unused cpu = smp_processor_id(); wrmsr(MSR_STAR, 0, (__USER32_CS << 16) | __KERNEL_CS); - if (static_cpu_has(X86_FEATURE_PTI)) - wrmsrl(MSR_LSTAR, SYSCALL64_entry_trampoline); - else - wrmsrl(MSR_LSTAR, (unsigned long)entry_SYSCALL_64); + wrmsrl(MSR_LSTAR, (unsigned long)entry_SYSCALL_64); #ifdef CONFIG_IA32_EMULATION wrmsrl(MSR_CSTAR, (unsigned long)entry_SYSCALL_compat); diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index b0d1e81c96bb..f802cf5b4478 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -1066,18 +1066,10 @@ NOKPROBE_SYMBOL(kprobe_exceptions_notify); bool arch_within_kprobe_blacklist(unsigned long addr) { - bool is_in_entry_trampoline_section = false; - -#ifdef CONFIG_X86_64 - is_in_entry_trampoline_section = - (addr >= (unsigned long)__entry_trampoline_start && - addr < (unsigned long)__entry_trampoline_end); -#endif return (addr >= (unsigned long)__kprobes_text_start && addr < (unsigned long)__kprobes_text_end) || (addr >= (unsigned long)__entry_text_start && - addr < (unsigned long)__entry_text_end) || - is_in_entry_trampoline_section; + addr < (unsigned long)__entry_text_end); } int __init arch_init_kprobes(void) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 8bde0a419f86..9c77d2df9c27 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -118,16 +118,6 @@ SECTIONS *(.fixup) *(.gnu.warning) -#ifdef CONFIG_X86_64 - . = ALIGN(PAGE_SIZE); - __entry_trampoline_start = .; - _entry_trampoline = .; - *(.entry_trampoline) - . = ALIGN(PAGE_SIZE); - __entry_trampoline_end = .; - ASSERT(. - _entry_trampoline == PAGE_SIZE, "entry trampoline is too big"); -#endif - #ifdef CONFIG_RETPOLINE __indirect_thunk_start = .; *(.text.__x86.indirect_thunk) |