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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2022-07-11 16:19:32 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-07-27 21:36:06 +1000 |
| commit | 2255411d1d0f0661d1e5acd5f6edf4e6652a345a (patch) | |
| tree | 7a38abcbc3906024394edea18450d47e7d670646 /arch/powerpc/include/asm/barrier.h | |
| parent | ff27d9200a98757efc7c2cdf198904fd79cf4ffd (diff) | |
powerpc/44x: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')
Building ppc40x_defconfig leads to following error
CC arch/powerpc/kernel/idle.o
{standard input}: Assembler messages:
{standard input}:67: Error: unrecognized opcode: `wrteei'
{standard input}:78: Error: unrecognized opcode: `wrteei'
Add -mcpu=440 by default and alternatively 464 and 476.
Once that's done, -mcpu=powerpc is only for book3s/32 now.
But then comes
CC arch/powerpc/kernel/io.o
{standard input}: Assembler messages:
{standard input}:198: Error: unrecognized opcode: `eieio'
{standard input}:230: Error: unrecognized opcode: `eieio'
{standard input}:245: Error: unrecognized opcode: `eieio'
{standard input}:254: Error: unrecognized opcode: `eieio'
{standard input}:273: Error: unrecognized opcode: `eieio'
{standard input}:396: Error: unrecognized opcode: `eieio'
{standard input}:404: Error: unrecognized opcode: `eieio'
{standard input}:423: Error: unrecognized opcode: `eieio'
{standard input}:512: Error: unrecognized opcode: `eieio'
{standard input}:520: Error: unrecognized opcode: `eieio'
{standard input}:539: Error: unrecognized opcode: `eieio'
{standard input}:628: Error: unrecognized opcode: `eieio'
{standard input}:636: Error: unrecognized opcode: `eieio'
{standard input}:655: Error: unrecognized opcode: `eieio'
Fix it by replacing eieio by mbar on booke.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b0d982e223314ed82ab959f5d4ad2c4c00bedb99.1657549153.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/barrier.h')
| -rw-r--r-- | arch/powerpc/include/asm/barrier.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h index f0e687236484..ef2d8b15eaab 100644 --- a/arch/powerpc/include/asm/barrier.h +++ b/arch/powerpc/include/asm/barrier.h @@ -42,6 +42,8 @@ /* The sub-arch has lwsync */ #if defined(CONFIG_PPC64) || defined(CONFIG_PPC_E500MC) # define SMPWMB LWSYNC +#elif defined(CONFIG_BOOKE) +# define SMPWMB mbar #else # define SMPWMB eieio #endif |