diff options
| -rw-r--r-- | arch/x86/entry/entry_64.S | 19 | ||||
| -rw-r--r-- | arch/x86/include/asm/special_insns.h | 14 |
2 files changed, 19 insertions, 14 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index f23bacd3428f..77298a45d132 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -1036,27 +1036,22 @@ idtentry alignment_check do_alignment_check has_error_code=1 idtentry simd_coprocessor_error do_simd_coprocessor_error has_error_code=0 - /* - * Reload gs selector with exception handling - * edi: new selector - */ +/* + * Reload gs selector with exception handling + * edi: new selector + */ .pushsection .text, "ax" -SYM_FUNC_START(native_load_gs_index) +SYM_FUNC_START(asm_native_load_gs_index) FRAME_BEGIN - pushfq - DISABLE_INTERRUPTS(CLBR_ANY & ~CLBR_RDI) - TRACE_IRQS_OFF SWAPGS .Lgs_change: movl %edi, %gs 2: ALTERNATIVE "", "mfence", X86_BUG_SWAPGS_FENCE SWAPGS - TRACE_IRQS_FLAGS (%rsp) - popfq FRAME_END ret -SYM_FUNC_END(native_load_gs_index) -EXPORT_SYMBOL(native_load_gs_index) +SYM_FUNC_END(asm_native_load_gs_index) +EXPORT_SYMBOL(asm_native_load_gs_index) .popsection _ASM_EXTABLE(.Lgs_change, .Lbad_gs) diff --git a/arch/x86/include/asm/special_insns.h b/arch/x86/include/asm/special_insns.h index 6d37b8fcfc77..1d06126c7cba 100644 --- a/arch/x86/include/asm/special_insns.h +++ b/arch/x86/include/asm/special_insns.h @@ -7,6 +7,7 @@ #include <asm/nops.h> #include <asm/processor-flags.h> +#include <linux/irqflags.h> #include <linux/jump_label.h> /* @@ -129,7 +130,16 @@ static inline void native_wbinvd(void) asm volatile("wbinvd": : :"memory"); } -extern asmlinkage void native_load_gs_index(unsigned); +extern asmlinkage void asm_native_load_gs_index(unsigned int selector); + +static inline void native_load_gs_index(unsigned int selector) +{ + unsigned long flags; + + local_irq_save(flags); + asm_native_load_gs_index(selector); + local_irq_restore(flags); +} static inline unsigned long __read_cr4(void) { @@ -186,7 +196,7 @@ static inline void wbinvd(void) #ifdef CONFIG_X86_64 -static inline void load_gs_index(unsigned selector) +static inline void load_gs_index(unsigned int selector) { native_load_gs_index(selector); } |