The following commit has been merged into the x86/fpu branch of tip: Commit-ID: c341f1fe1543dfaf94916cef298aa60be545235f Gitweb: https://git.kernel.org/tip/c341f1fe1543dfaf94916cef298aa60be545235f Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Fri, 22 Oct 2021 20:55:54 +02:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Mon, 25 Oct 2021 10:24:16 +02:00 x86/fpu: Remove old KVM FPU interface No more users. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lkml.kernel.org/r/20211022185313.074853631@xxxxxxxxxxxxx --- arch/x86/include/asm/fpu/api.h | 2 -- arch/x86/kernel/fpu/core.c | 32 -------------------------------- 2 files changed, 34 deletions(-) diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h index 5e5f172..e9379d7 100644 --- 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 64c98a4..c55013f 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -246,29 +246,6 @@ 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) { @@ -438,15 +415,6 @@ 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) {
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