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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-10-22 20:55:54 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-10-23 17:05:19 +0200 |
| commit | 582b01b6ab2714a0a4d554cea7f0d4efeaa2154d (patch) | |
| tree | 82468a69ab3c98b515b003404b9cc667160a83de | |
| parent | x86/kvm: Convert FPU handling to a single swap buffer (diff) | |
| download | linux-582b01b6ab2714a0a4d554cea7f0d4efeaa2154d.tar.xz linux-582b01b6ab2714a0a4d554cea7f0d4efeaa2154d.zip | |
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
| -rw-r--r-- | arch/x86/include/asm/fpu/api.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 32 |
2 files changed, 0 insertions, 34 deletions
diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h index 5e5f172c1a9d..e9379d7e7743 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 01fbf7c3e799..9c475e2efd4d 100644 --- 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) { |