From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: npiggin@gmail.com, benh@kernel.crashing.org, paulus@samba.org,
mpe@ellerman.id.au
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc/mm/radix: Do slb preload only with hash translation mode
Date: Tue, 9 Apr 2019 09:33:28 +0530 [thread overview]
Message-ID: <20190409040328.6038-1-aneesh.kumar@linux.ibm.com> (raw)
Add radix_enabled check to avoid slb preload with radix translation.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
---
Without this we result in kernel crash as we move hash related variables
out of mm_context_t
arch/powerpc/kernel/process.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index dd9e0d5386ee..f7b2e3b3db28 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1729,7 +1729,8 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
unsigned long load_addr = regs->gpr[2]; /* saved by ELF_PLAT_INIT */
#ifdef CONFIG_PPC_BOOK3S_64
- preload_new_slb_context(start, sp);
+ if (!radix_enabled())
+ preload_new_slb_context(start, sp);
#endif
#endif
--
2.20.1
next reply other threads:[~2019-04-09 4:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-09 4:03 Aneesh Kumar K.V [this message]
2019-04-09 8:10 ` [PATCH] powerpc/mm/radix: Do slb preload only with hash translation mode Nicholas Piggin
2019-04-21 14:19 ` Michael Ellerman
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