diff options
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 64b2ee39bece..271fd5bc043b 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -283,6 +283,18 @@ int fpu_enable_guest_xfd_features(struct fpu_guest *guest_fpu, u64 xfeatures) } EXPORT_SYMBOL_GPL(fpu_enable_guest_xfd_features); +#ifdef CONFIG_X86_64 +void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd) +{ + fpregs_lock(); + guest_fpu->fpstate->xfd = xfd; + if (guest_fpu->fpstate->in_use) + xfd_update_state(guest_fpu->fpstate); + fpregs_unlock(); +} +EXPORT_SYMBOL_GPL(fpu_update_guest_xfd); +#endif /* CONFIG_X86_64 */ + int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest) { struct fpstate *guest_fps = guest_fpu->fpstate; |