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Message-ID: <cea04e5b971c959d823682e1e338c5c40d134f0c.1724309198.git.christophe.leroy@csgroup.eu>
Date: Thu, 22 Aug 2024 09:13:16 +0200
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Michael Ellerman <mpe@...erman.id.au>,
Nicholas Piggin <npiggin@...il.com>,
Christophe Leroy <christophe.leroy@...roup.eu>,
Naveen N Rao <naveen@...nel.org>,
Andy Lutomirski <luto@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
"Theodore Ts'o" <tytso@....edu>,
"Jason A. Donenfeld" <Jason@...c4.com>,
Arnd Bergmann <arnd@...db.de>,
Andrew Morton <akpm@...ux-foundation.org>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Vincenzo Frascino <vincenzo.frascino@....com>,
Shuah Khan <shuah@...nel.org>
Cc: linuxppc-dev@...ts.ozlabs.org,
linux-kernel@...r.kernel.org,
linux-fsdevel@...r.kernel.org,
linux-arch@...r.kernel.org,
linux-mm@...ck.org,
linux-trace-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org
Subject: [PATCH v2 08/17] powerpc: Add little endian variants of LWZX_BE and STWX_BE
To support getrandom in VDSO which is based on little endian storage,
add macros equivalent to LWZX_BE and STWX_BE for little endian
accesses.
Put them outside of __powerpc64__ #ifdef so that they can also be used
for PPC32.
Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
arch/powerpc/include/asm/asm-compat.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/include/asm/asm-compat.h b/arch/powerpc/include/asm/asm-compat.h
index 2bc53c646ccd..6e53a80917ef 100644
--- a/arch/powerpc/include/asm/asm-compat.h
+++ b/arch/powerpc/include/asm/asm-compat.h
@@ -61,4 +61,12 @@
#endif
+#ifdef __BIG_ENDIAN__
+#define LWZX_LE stringify_in_c(lwbrx)
+#define STWX_LE stringify_in_c(stwbrx)
+#else
+#define LWZX_LE stringify_in_c(lwzx)
+#define STWX_LE stringify_in_c(stwx)
+#endif
+
#endif /* _ASM_POWERPC_ASM_COMPAT_H */
--
2.44.0
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