Hi David.
As per discussion in other mail I have looked into the section
mismatch warnings coming from trampoline.S
If the section is changed to .init.text it gives the following warnings:
WARNING: arch/sparc64/kernel/built-in.o(.sun4v_1insn_patch+0x8): Section
mismatch: reference to .init.text:
WARNING: arch/sparc64/kernel/built-in.o(.sun4v_1insn_patch+0x10): Section
mismatch: reference to .init.text:
WARNING: arch/sparc64/kernel/built-in.o(.sun4v_1insn_patch+0x18): Section
mismatch: reference to .init.text:
WARNING: arch/sparc64/kernel/built-in.o(.cpuid_patch+0x0): Section mismatch:
reference to .init.text:
The good news is that there is a nice pattern here. All sections that
have the references end in _patch.
So a simple solution is to teach modpost to not warn about references
from a section named *_patch to .init.text
I have such a change queued to modpost but would like to know if
you have any better ideas before pushing the change.
Sam
Relevant patches (for info only).
I do not know if it is OK to use .init.text??
I would assume that CONFIG_HOTPLUG_CPU had impact here.
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index a4dc01a..2588cf0 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -37,6 +37,7 @@ tramp_stack:
.skip TRAMP_STACK_SIZE
.text
+ .section .init.text, "ax"
.align 8
.globl sparc64_cpu_startup, sparc64_cpu_startup_end
sparc64_cpu_startup:
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 0f9130f..8464938 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1173,6 +1173,11 @@ static int init_section_ref_ok(const char *name)
".rodata",
NULL
};
+ /* End of section names */
+ const char *end_of_sec[] = {
+ "_patch",
+ NULL
+ };
if (initexit_section_ref_ok(name))
return 1;
@@ -1183,6 +1188,11 @@ static int init_section_ref_ok(const char *name)
for (s = namelist2; *s; s++)
if (strncmp(*s, name, strlen(*s)) == 0)
return 1;
+
+ for (s = end_of_sec; *s; s++)
+ if (strrcmp(name, *s) == 0)
+ return 1;
+
if (strrcmp(name, ".init") == 0)
return 1;
return 0;
-
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