x86/fpu: Remove old KVM FPU interface

No more users.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211022185313.074853631@linutronix.de

diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h
index 5e5f172c1a9da7cba7a2580bbedd175be501330b..e9379d7e77435557bb9509ac4cedd5036a916654 100644 (file)
--- a/arch/x86/include/asm/fpu/api.h
+++ b/arch/x86/include/asm/fpu/api.h
@@ -131,14 +131,12 @@ static inline void fpstate_init_soft(struct swregs_state *soft) {}
 DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx);
 
 /* fpstate-related functions which are exported to KVM */
-extern void fpu_init_fpstate_user(struct fpu *fpu);
 extern void fpstate_clear_xstate_component(struct fpstate *fps, unsigned int xfeature);
 
 /* KVM specific functions */
 extern bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu);
 extern void fpu_free_guest_fpstate(struct fpu_guest *gfpu);
 extern int fpu_swap_kvm_fpstate(struct fpu_guest *gfpu, bool enter_guest);
-extern void fpu_swap_kvm_fpu(struct fpu *save, struct fpu *rstor, u64 restore_mask);
 
 extern void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf, unsigned int size, u32 pkru);
 extern int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, u64 xcr0, u32 *vpkru);

diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 01fbf7c3e799cd94bdde9198a5e67734296b354e..9c475e2efd4d557ef7ef26873bb2f8470eaddda1 100644 (file)
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -245,29 +245,6 @@ int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest)
 }
 EXPORT_SYMBOL_GPL(fpu_swap_kvm_fpstate);
 
-void fpu_swap_kvm_fpu(struct fpu *save, struct fpu *rstor, u64 restore_mask)
-{
-       fpregs_lock();
-
-       if (save) {
-               struct fpstate *fpcur = current->thread.fpu.fpstate;
-
-               if (test_thread_flag(TIF_NEED_FPU_LOAD))
-                       memcpy(&save->fpstate->regs, &fpcur->regs, fpcur->size);
-               else
-                       save_fpregs_to_fpstate(save);
-       }
-
-       if (rstor) {
-               restore_mask &= XFEATURE_MASK_FPSTATE;
-               restore_fpregs_from_fpstate(rstor->fpstate, restore_mask);
-       }
-
-       fpregs_mark_activate();
-       fpregs_unlock();
-}
-EXPORT_SYMBOL_GPL(fpu_swap_kvm_fpu);
-
 void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf,
                                    unsigned int size, u32 pkru)
 {
@@ -437,15 +414,6 @@ void fpstate_reset(struct fpu *fpu)
        __fpstate_reset(fpu->fpstate);
 }
 
-#if IS_ENABLED(CONFIG_KVM)
-void fpu_init_fpstate_user(struct fpu *fpu)
-{
-       fpstate_reset(fpu);
-       fpstate_init_user(fpu->fpstate);
-}
-EXPORT_SYMBOL_GPL(fpu_init_fpstate_user);
-#endif
-
 /* Clone current's FPU state on fork */
 int fpu_clone(struct task_struct *dst)
 {