diff options
Diffstat (limited to 'arch/x86/kernel/fpu/core.c')
| -rw-r--r-- | arch/x86/kernel/fpu/core.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c index 1f71cc135e9a..da233f20ae6f 100644 --- a/arch/x86/kernel/fpu/core.c +++ b/arch/x86/kernel/fpu/core.c @@ -18,6 +18,7 @@ #include <uapi/asm/kvm.h> #include <linux/hardirq.h> +#include <linux/kvm_types.h> #include <linux/pkeys.h> #include <linux/vmalloc.h> @@ -276,7 +277,7 @@ bool fpu_alloc_guest_fpstate(struct fpu_guest *gfpu) return true; } -EXPORT_SYMBOL_GPL(fpu_alloc_guest_fpstate); +EXPORT_SYMBOL_FOR_KVM(fpu_alloc_guest_fpstate); void fpu_free_guest_fpstate(struct fpu_guest *gfpu) { @@ -291,7 +292,7 @@ void fpu_free_guest_fpstate(struct fpu_guest *gfpu) gfpu->fpstate = NULL; vfree(fpstate); } -EXPORT_SYMBOL_GPL(fpu_free_guest_fpstate); +EXPORT_SYMBOL_FOR_KVM(fpu_free_guest_fpstate); /* * fpu_enable_guest_xfd_features - Check xfeatures against guest perm and enable @@ -313,7 +314,7 @@ int fpu_enable_guest_xfd_features(struct fpu_guest *guest_fpu, u64 xfeatures) return __xfd_enable_feature(xfeatures, guest_fpu); } -EXPORT_SYMBOL_GPL(fpu_enable_guest_xfd_features); +EXPORT_SYMBOL_FOR_KVM(fpu_enable_guest_xfd_features); #ifdef CONFIG_X86_64 void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd) @@ -324,7 +325,7 @@ void fpu_update_guest_xfd(struct fpu_guest *guest_fpu, u64 xfd) xfd_update_state(guest_fpu->fpstate); fpregs_unlock(); } -EXPORT_SYMBOL_GPL(fpu_update_guest_xfd); +EXPORT_SYMBOL_FOR_KVM(fpu_update_guest_xfd); /** * fpu_sync_guest_vmexit_xfd_state - Synchronize XFD MSR and software state @@ -348,7 +349,7 @@ void fpu_sync_guest_vmexit_xfd_state(void) __this_cpu_write(xfd_state, fpstate->xfd); } } -EXPORT_SYMBOL_GPL(fpu_sync_guest_vmexit_xfd_state); +EXPORT_SYMBOL_FOR_KVM(fpu_sync_guest_vmexit_xfd_state); #endif /* CONFIG_X86_64 */ int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest) @@ -390,7 +391,7 @@ int fpu_swap_kvm_fpstate(struct fpu_guest *guest_fpu, bool enter_guest) fpregs_unlock(); return 0; } -EXPORT_SYMBOL_GPL(fpu_swap_kvm_fpstate); +EXPORT_SYMBOL_FOR_KVM(fpu_swap_kvm_fpstate); void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf, unsigned int size, u64 xfeatures, u32 pkru) @@ -409,7 +410,7 @@ void fpu_copy_guest_fpstate_to_uabi(struct fpu_guest *gfpu, void *buf, ustate->xsave.header.xfeatures = XFEATURE_MASK_FPSSE; } } -EXPORT_SYMBOL_GPL(fpu_copy_guest_fpstate_to_uabi); +EXPORT_SYMBOL_FOR_KVM(fpu_copy_guest_fpstate_to_uabi); int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, u64 xcr0, u32 *vpkru) @@ -439,7 +440,7 @@ int fpu_copy_uabi_to_guest_fpstate(struct fpu_guest *gfpu, const void *buf, return copy_uabi_from_kernel_to_xstate(kstate, ustate, vpkru); } -EXPORT_SYMBOL_GPL(fpu_copy_uabi_to_guest_fpstate); +EXPORT_SYMBOL_FOR_KVM(fpu_copy_uabi_to_guest_fpstate); #endif /* CONFIG_KVM */ void kernel_fpu_begin_mask(unsigned int kfpu_mask) @@ -825,6 +826,9 @@ void fpu__clear_user_states(struct fpu *fpu) !fpregs_state_valid(fpu, smp_processor_id())) os_xrstor_supervisor(fpu->fpstate); + /* Ensure XFD state is in sync before reloading XSTATE */ + xfd_update_state(fpu->fpstate); + /* Reset user states in registers. */ restore_fpregs_from_init_fpstate(XFEATURE_MASK_USER_RESTORE); @@ -854,7 +858,7 @@ void switch_fpu_return(void) fpregs_restore_userregs(); } -EXPORT_SYMBOL_GPL(switch_fpu_return); +EXPORT_SYMBOL_FOR_KVM(switch_fpu_return); void fpregs_lock_and_load(void) { @@ -889,7 +893,7 @@ void fpregs_assert_state_consistent(void) WARN_ON_FPU(!fpregs_state_valid(fpu, smp_processor_id())); } -EXPORT_SYMBOL_GPL(fpregs_assert_state_consistent); +EXPORT_SYMBOL_FOR_KVM(fpregs_assert_state_consistent); #endif void fpregs_mark_activate(void) |