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Revert "KVM: x86: Add a WARN on TIF_NEED_FPU_LOAD in kvm_load_guest_fpu()"

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This reverts commit 95145c25a7.
The next few patches will fix the issue so the warning is not
needed anymore; revert it separately to simplify application to
stable kernels.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-01-18 22:29:46 +01:00
parent 3ce4dc17e0
commit 3911b65ee1
1 changed files with 0 additions and 7 deletions
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7
arch/x86/kvm/x86.c
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@ -8563,13 +8563,6 @@ static void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
{ {
fpregs_lock(); fpregs_lock();
/*
* Reloading userspace's FPU is handled by kvm_arch_vcpu_load(), both
* for direct calls from userspace (via vcpu_load()) and if this task
* is preempted (via kvm_sched_in()) between vcpu_load() and now.
*/
WARN_ON_ONCE(test_thread_flag(TIF_NEED_FPU_LOAD));
copy_fpregs_to_fpstate(vcpu->arch.user_fpu); copy_fpregs_to_fpstate(vcpu->arch.user_fpu);
/* PKRU is separately restored in kvm_x86_ops->run. */ /* PKRU is separately restored in kvm_x86_ops->run. */
__copy_kernel_to_fpregs(&vcpu->arch.guest_fpu->state, __copy_kernel_to_fpregs(&vcpu->arch.guest_fpu->state,