jamiens...@163.com writes:
> From: Jamie Huang <jamiens...@163.com> > > In v5.18-evl-rebase, function kernel_fpu_disabled() has been removed in > commit 59f5ede3bc0f("x86/fpu: Prevent FPU state corruption"), so we will > get compile error when CONFIG_DOVETAIL is enabled: > arch/x86/kernel/fpu/core.c:931:6: error: implicit declaration of function > ‘kernel_fpu_disabled’; did you mean ‘perf_pmu_disable’? > [-Werror=implicit-function-declaration] > if (kernel_fpu_disabled()) { > ^~~~~~~~~~~~~~~~~~~ > perf_pmu_disable > cc1: all warnings being treated as errors > So, fix it. > > Signed-off-by: Jamie Huang <jamiens...@163.com> > --- > arch/x86/kernel/fpu/core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c > index 6a0d1e7f278f..c3adbbb73226 100644 > --- a/arch/x86/kernel/fpu/core.c > +++ b/arch/x86/kernel/fpu/core.c > @@ -928,7 +928,7 @@ void fpu__suspend_inband(void) > * preemption of an inband kernel context currently using the > * fpu by a thread which resumes on the oob stage. > */ > - if (kernel_fpu_disabled()) { > + if (this_cpu_read(in_kernel_fpu)) { > save_fpregs_to_fpstate(kfpu); > __cpu_invalidate_fpregs_state(); > oob_fpu_set_preempt(&tsk->thread.fpu); Merged adding the same fixup to the comment nearby, thanks. -- Philippe.