From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
mikey@neuling.org
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 2/2] powerpc: Non relocatable system call doesn't need a trampoline
Date: Tue, 26 May 2015 15:46:55 +1000 [thread overview]
Message-ID: <1432619215-13490-2-git-send-email-anton@samba.org> (raw)
In-Reply-To: <1432619215-13490-1-git-send-email-anton@samba.org>
We need to use a trampoline when using LOAD_HANDLER(), because the
destination needs to be in the first 64kB. An absolute branch has
no such limitations, so just jump there.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
arch/powerpc/kernel/exceptions-64s.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index cf8c1b5..0a0399c2 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -79,7 +79,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \
mfspr r12,SPRN_SRR1 ; \
li r10,MSR_RI ; \
mtmsrd r10,1 ; /* Set RI (EE=0) */ \
- b system_call_entry ;
+ b system_call_common ;
#endif
/*
--
2.1.4
prev parent reply other threads:[~2015-05-26 5:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 5:46 [PATCH 1/2] powerpc: Relocatable system call no longer uses the LR Anton Blanchard
2015-05-26 5:46 ` Anton Blanchard [this message]
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