Le 22/07/2020 à 04:24, Michael Ellerman a écrit :
The assembler says:
arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression
I get exactly the same with head_32.S, for the exact same reason.
Christophe
It's objecting to the use of r0 as the RA argument. That's because
when RA = 0 the literal value 0 is used, rather than the content of
r0, making the use of r0 in the source potentially confusing.
Fix it to use a literal 0, the generated code is identical.
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
arch/powerpc/kernel/head_40x.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
index 926bfa73586a..5b282d9965a5 100644
--- a/arch/powerpc/kernel/head_40x.S
+++ b/arch/powerpc/kernel/head_40x.S
@@ -620,7 +620,7 @@ _ENTRY(saved_ksp_limit)
ori r6, r6, swapper_pg_dir@l
lis r5, abatron_pteptrs@h
ori r5, r5, abatron_pteptrs@l
- stw r5, 0xf0(r0) /* Must match your Abatron config file */
+ stw r5, 0xf0(0) /* Must match your Abatron config file */
tophys(r5,r5)
stw r6, 0(r5)
