From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] powerpc/inst: Refactor ___get_user_instr()
Date: Fri, 17 Sep 2021 20:37:38 +0200 [thread overview]
Message-ID: <9607dfbecab2ecccb712bbd25d2d5da882239d4c.1631903846.git.christophe.leroy@csgroup.eu> (raw)
PPC64 version of ___get_user_instr() can be used for PPC32 as well,
by simply disabling the suffix part with IS_ENABLED(CONFIG_PPC64).
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
arch/powerpc/include/asm/inst.h | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h
index b11c0e2f9639..fea4d46155a9 100644
--- a/arch/powerpc/include/asm/inst.h
+++ b/arch/powerpc/include/asm/inst.h
@@ -4,8 +4,6 @@
#include <asm/ppc-opcode.h>
-#ifdef CONFIG_PPC64
-
#define ___get_user_instr(gu_op, dest, ptr) \
({ \
long __gui_ret; \
@@ -16,7 +14,7 @@
__chk_user_ptr(ptr); \
__gui_ret = gu_op(__prefix, __gui_ptr); \
if (__gui_ret == 0) { \
- if ((__prefix >> 26) == OP_PREFIX) { \
+ if (IS_ENABLED(CONFIG_PPC64) && (__prefix >> 26) == OP_PREFIX) { \
__gui_ret = gu_op(__suffix, __gui_ptr + 1); \
__gui_inst = ppc_inst_prefix(__prefix, __suffix); \
} else { \
@@ -27,13 +25,6 @@
} \
__gui_ret; \
})
-#else /* !CONFIG_PPC64 */
-#define ___get_user_instr(gu_op, dest, ptr) \
-({ \
- __chk_user_ptr(ptr); \
- gu_op((dest).val, (u32 __user *)(ptr)); \
-})
-#endif /* CONFIG_PPC64 */
#define get_user_instr(x, ptr) ___get_user_instr(get_user, x, ptr)
--
2.31.1
next reply other threads:[~2021-09-17 18:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-17 18:37 Christophe Leroy [this message]
2021-09-17 18:37 ` [PATCH 2/3] powerpc/inst: Define ppc_inst_t Christophe Leroy
2021-09-17 18:37 ` [PATCH 3/3] powerpc/inst: Define ppc_inst_t as u32 on PPC32 Christophe Leroy
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