diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h index f1eddcccba16..5bdde8ca87bc 100644 --- a/arch/x86/include/asm/fpu/api.h +++ b/arch/x86/include/asm/fpu/api.h @@ -23,6 +23,7 @@ extern void fpu__clear(struct task_struct *tsk); extern int dump_fpu(struct pt_regs *, struct user_i387_struct *); extern void fpu__restore(void); extern void fpu__init_check_bugs(void); +extern void fpu__resume_cpu(void); extern bool irq_fpu_usable(void); diff --git a/arch/x86/kernel/fpu/xsave.c b/arch/x86/kernel/fpu/xsave.c index 1d0e27128f18..a485180ebc32 100644 --- a/arch/x86/kernel/fpu/xsave.c +++ b/arch/x86/kernel/fpu/xsave.c @@ -734,6 +734,18 @@ void __init_refok eager_fpu_init(void) setup_init_fpu_buf(); } +/* + * Restore minimal FPU state after suspend: + */ +void fpu__resume_cpu(void) +{ + /* + * Restore XCR0 on xsave capable CPUs: + */ + if (cpu_has_xsave) + xsetbv(XCR_XFEATURE_ENABLED_MASK, xfeatures_mask); +} + /* * Given the xsave area and a state inside, this function returns the * address of the state. diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c index 62054acbd0d8..ad0ce6b70fac 100644 --- a/arch/x86/power/cpu.c +++ b/arch/x86/power/cpu.c @@ -18,10 +18,8 @@ #include #include #include -#include #include #include -#include /* xfeatures_mask */ #include #ifdef CONFIG_X86_32 @@ -155,6 +153,8 @@ static void fix_processor_context(void) #endif load_TR_desc(); /* This does ltr */ load_LDT(¤t->active_mm->context); /* This does lldt */ + + fpu__resume_cpu(); } /** @@ -221,12 +221,6 @@ static void notrace __restore_processor_state(struct saved_context *ctxt) wrmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base); #endif - /* - * restore XCR0 for xsave capable cpu's. - */ - if (cpu_has_xsave) - xsetbv(XCR_XFEATURE_ENABLED_MASK, xfeatures_mask); - fix_processor_context(); do_fpu_end();