Hi,
Le 18/11/2025 à 13:17, René Rebe a écrit :
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Building a size optimized ppc kernel, gcc emmits more symbols than
currently allowed listed in scripts/mod/modpost.c. Add to fix:
You should say when the problem started to happen, and what those
functions are supposed to save and restore.
As an exemple see commit 8fe9c93e7453 ("powerpc: Add vr save/restore
functions")
Also confirm it is only needed on powerpc64, if so make it clear in the
commit message.
Christophe
MODPOST Module.symvers
ERROR: modpost: "_restfpr_20" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_restfpr_26" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_restfpr_22" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_savegpr1_27" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_savegpr1_25" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_restfpr_28" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_savegpr1_29" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_savefpr_20" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_savefpr_22" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
ERROR: modpost: "_restfpr_15" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
WARNING: modpost: suppressed 56 unresolved symbol warnings because there were
too many)
Signed-off-by: René Rebe <[email protected]>
---
scripts/mod/modpost.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 47c8aa2a6939..133dfa16308a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -602,6 +602,10 @@ static int ignore_undef_symbol(struct elf_info *info,
const char *symname)
/* Special register function linked on all modules during
final link of .ko */
if (strstarts(symname, "_restgpr0_") ||
strstarts(symname, "_savegpr0_") ||
+ strstarts(symname, "_restgpr1_") ||
+ strstarts(symname, "_savegpr1_") ||
+ strstarts(symname, "_restfpr_") ||
+ strstarts(symname, "_savefpr_") ||
strstarts(symname, "_restvr_") ||
strstarts(symname, "_savevr_") ||
strcmp(symname, ".TOC.") == 0)
--
2.46.0
--
René Rebe, ExactCODE GmbH, Berlin, Germany
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