From: Michael Ellerman <mpe@ellerman.id.au>
To: <linuxppc-dev@lists.ozlabs.org>
Cc: naveen.n.rao@linux.ibm.com, oss@buserror.net
Subject: [PATCH] powerpc/64e: Tie PPC_BOOK3E_64 to PPC_FSL_BOOK3E
Date: Fri, 4 Mar 2022 17:12:22 +1100 [thread overview]
Message-ID: <20220304061222.2478720-1-mpe@ellerman.id.au> (raw)
Since the IBM A2 CPU support was removed, see commit
fb5a515704d7 ("powerpc: Remove platforms/wsp and associated pieces"),
the only 64-bit Book3E CPUs we support are Freescale (NXP) ones.
However our Kconfig still allows configurating a kernel that has 64-bit
Book3E support, but no Freescale CPU support enabled. Such a kernel
would never boot, it doesn't know about any CPUs.
It also causes build errors, as reported by lkp, because
PPC_BARRIER_NOSPEC is not enabled in such a configuration:
powerpc64-linux-ld: arch/powerpc/net/bpf_jit_comp64.o:(.toc+0x0):
undefined reference to `powerpc_security_features'
To fix this, force PPC_FSL_BOOK3E to be selected whenever we are
building a 64-bit Book3E kernel.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/platforms/Kconfig.cputype | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 87bc1929ee5a..e2e1fec91c6e 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -107,6 +107,7 @@ config PPC_BOOK3S_64
config PPC_BOOK3E_64
bool "Embedded processors"
+ select PPC_FSL_BOOK3E
select PPC_FPU # Make it a choice ?
select PPC_SMP_MUXED_IPI
select PPC_DOORBELL
@@ -295,7 +296,7 @@ config FSL_BOOKE
config PPC_FSL_BOOK3E
bool
select ARCH_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
- select FSL_EMB_PERFMON
+ imply FSL_EMB_PERFMON
select PPC_SMP_MUXED_IPI
select PPC_DOORBELL
select PPC_KUEP
--
2.34.1
next reply other threads:[~2022-03-04 6:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 6:12 Michael Ellerman [this message]
2022-03-07 9:47 ` [PATCH] powerpc/64e: Tie PPC_BOOK3E_64 to PPC_FSL_BOOK3E Arnd Bergmann
2022-03-12 10:29 ` Michael Ellerman
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