[tip: x86/fpu] x86/fpu: Remove x86_init_fpu

[tip-bot2 for Oleg Nesterov]

The following commit has been merged into the x86/fpu branch of tip:

Commit-ID:     392bbe11c7cf90e65cba32e90af3b969a981c4fe
Gitweb:        https://git.kernel.org/tip/392bbe11c7cf90e65cba32e90af3b969a981c4fe
Author:        Oleg Nesterov <oleg@xxxxxxxxxx>
AuthorDate:    Sat, 03 May 2025 16:38:37 +02:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Sun, 04 May 2025 10:29:24 +02:00

x86/fpu: Remove x86_init_fpu

It is not actually used after:

  55bc30f2e34d ("x86/fpu: Remove the thread::fpu pointer")

Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Chang S . Bae <chang.seok.bae@xxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Brian Gerst <brgerst@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20250503143837.GA8985@xxxxxxxxxx
---
 arch/x86/kernel/fpu/init.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index 2d9b5e6..6bb3e35 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -71,13 +71,9 @@ static bool __init fpu__probe_without_cpuid(void)
 	return fsw == 0 && (fcw & 0x103f) == 0x003f;
 }
 
-static struct fpu x86_init_fpu __attribute__ ((aligned (64))) __read_mostly;
-
 static void __init fpu__init_system_early_generic(void)
 {
-	fpstate_reset(&x86_init_fpu);
 	set_thread_flag(TIF_NEED_FPU_LOAD);
-	x86_init_fpu.last_cpu = -1;
 
 	if (!boot_cpu_has(X86_FEATURE_CPUID) &&
 	    !test_bit(X86_FEATURE_FPU, (unsigned long *)cpu_caps_cleared)) {