[PATCH 6.10 007/149] LoongArch: Add ifdefs to fix LSX and LASX related warnings

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6.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>

commit 80376323e2b6a4559f86b2b4d864848ac25cb054 upstream.

There exist some warnings when building kernel if CONFIG_CPU_HAS_LBT is
set but CONFIG_CPU_HAS_LSX and CONFIG_CPU_HAS_LASX are not set. In this
case, there are no definitions of _restore_lsx & _restore_lasx and there
are also no definitions of kvm_restore_lsx & kvm_restore_lasx in fpu.S
and switch.S respectively, just add some ifdefs to fix these warnings.

  AS      arch/loongarch/kernel/fpu.o
arch/loongarch/kernel/fpu.o: warning: objtool: unexpected relocation symbol type in .rela.discard.func_stack_frame_non_standard: 0
arch/loongarch/kernel/fpu.o: warning: objtool: unexpected relocation symbol type in .rela.discard.func_stack_frame_non_standard: 0

  AS [M]  arch/loongarch/kvm/switch.o
arch/loongarch/kvm/switch.o: warning: objtool: unexpected relocation symbol type in .rela.discard.func_stack_frame_non_standard: 0
arch/loongarch/kvm/switch.o: warning: objtool: unexpected relocation symbol type in .rela.discard.func_stack_frame_non_standard: 0

  MODPOST Module.symvers
ERROR: modpost: "kvm_restore_lsx" [arch/loongarch/kvm/kvm.ko] undefined!
ERROR: modpost: "kvm_restore_lasx" [arch/loongarch/kvm/kvm.ko] undefined!

Cc: stable@xxxxxxxxxxxxxxx # 6.9+
Fixes: cb8a2ef0848c ("LoongArch: Add ORC stack unwinder support")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202408120955.qls5oNQY-lkp@xxxxxxxxx/
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/loongarch/kernel/fpu.S | 4 ++++
 arch/loongarch/kvm/switch.S | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/loongarch/kernel/fpu.S b/arch/loongarch/kernel/fpu.S
index 69a85f2479fb..6ab640101457 100644
--- a/arch/loongarch/kernel/fpu.S
+++ b/arch/loongarch/kernel/fpu.S
@@ -530,6 +530,10 @@ SYM_FUNC_END(_restore_lasx_context)
 
 #ifdef CONFIG_CPU_HAS_LBT
 STACK_FRAME_NON_STANDARD _restore_fp
+#ifdef CONFIG_CPU_HAS_LSX
 STACK_FRAME_NON_STANDARD _restore_lsx
+#endif
+#ifdef CONFIG_CPU_HAS_LASX
 STACK_FRAME_NON_STANDARD _restore_lasx
 #endif
+#endif
diff --git a/arch/loongarch/kvm/switch.S b/arch/loongarch/kvm/switch.S
index 80e988985a6a..0c292f818492 100644
--- a/arch/loongarch/kvm/switch.S
+++ b/arch/loongarch/kvm/switch.S
@@ -277,6 +277,10 @@ SYM_DATA(kvm_enter_guest_size, .quad kvm_enter_guest_end - kvm_enter_guest)
 
 #ifdef CONFIG_CPU_HAS_LBT
 STACK_FRAME_NON_STANDARD kvm_restore_fpu
+#ifdef CONFIG_CPU_HAS_LSX
 STACK_FRAME_NON_STANDARD kvm_restore_lsx
+#endif
+#ifdef CONFIG_CPU_HAS_LASX
 STACK_FRAME_NON_STANDARD kvm_restore_lasx
 #endif
+#endif
-- 
2.46.0







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