linux-kernel - [PATCH -next v2] powerpc/book3s64: fix link error with CONFIG_PPC_RADIX

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Date:   Thu, 17 Sep 2020 10:06:43 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
CC:     <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <christophe.leroy@...roup.eu>, <yangyingliang@...wei.com>
Subject: [PATCH -next v2] powerpc/book3s64: fix link error with CONFIG_PPC_RADIX_MMU=n

Fix link error when CONFIG_PPC_RADIX_MMU is disabled:
powerpc64-linux-gnu-ld: arch/powerpc/platforms/pseries/lpar.o:(.toc+0x0): undefined reference to `mmu_pid_bits'

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
  v2:
    - enclose radix_init_pseries with CONFIG_PPC_RADIX_MMU
    - remove CONFIG_PPC_RADIX_MMU in radix__init_new_context()
---
 arch/powerpc/platforms/pseries/lpar.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index baf24eacd268..764170fdb0f7 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -1724,6 +1724,7 @@ void __init hpte_init_pseries(void)
 		pseries_lpar_register_process_table(0, 0, 0);
 }
 
+#ifdef CONFIG_PPC_RADIX_MMU
 void radix_init_pseries(void)
 {
 	pr_info("Using radix MMU under hypervisor\n");
@@ -1731,6 +1732,7 @@ void radix_init_pseries(void)
 	pseries_lpar_register_process_table(__pa(process_tb),
 						0, PRTB_SIZE_SHIFT - 12);
 }
+#endif
 
 #ifdef CONFIG_PPC_SMLPAR
 #define CMO_FREE_HINT_DEFAULT 1
-- 
2.25.1