From: Ard Biesheuvel <ardb+git@google.com>
To: linux-hardening@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Ard Biesheuvel <ardb@kernel.org>,
Kees Cook <kees@kernel.org>, Ryan Roberts <ryan.roberts@arm.com>,
Will Deacon <will@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Jeremy Linton <jeremy.linton@arm.com>,
Catalin Marinas <Catalin.Marinas@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
"Jason A. Donenfeld" <Jason@zx2c4.com>
Subject: [RFC/RFT PATCH 1/6] hexagon: Wire up cmpxchg64_local() to generic implementation
Date: Thu, 27 Nov 2025 10:22:28 +0100 [thread overview]
Message-ID: <20251127092226.1439196-9-ardb+git@google.com> (raw)
In-Reply-To: <20251127092226.1439196-8-ardb+git@google.com>
From: Ard Biesheuvel <ardb@kernel.org>
Provide cmpxchg64_local() for hexagon so we can start using it in
generic code.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
arch/hexagon/include/asm/cmpxchg.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/hexagon/include/asm/cmpxchg.h b/arch/hexagon/include/asm/cmpxchg.h
index 9c58fb81f7fd..05e426475d2a 100644
--- a/arch/hexagon/include/asm/cmpxchg.h
+++ b/arch/hexagon/include/asm/cmpxchg.h
@@ -8,6 +8,8 @@
#ifndef _ASM_CMPXCHG_H
#define _ASM_CMPXCHG_H
+#include <asm-generic/cmpxchg-local.h>
+
/*
* __arch_xchg - atomically exchange a register and a memory location
* @x: value to swap
@@ -72,4 +74,6 @@ __arch_xchg(unsigned long x, volatile void *ptr, int size)
__oldval; \
})
+#define arch_cmpxchg64_local __generic_cmpxchg64_local
+
#endif /* _ASM_CMPXCHG_H */
--
2.52.0.107.ga0afd4fd5b-goog
next prev parent reply other threads:[~2025-11-27 9:23 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-27 9:22 [RFC/RFT PATCH 0/6] Improve get_random_u8() for use in randomize kstack Ard Biesheuvel
2025-11-27 9:22 ` Ard Biesheuvel [this message]
2025-11-27 9:22 ` [RFC/RFT PATCH 2/6] arc: Wire up cmpxchg64_local() to generic implementation Ard Biesheuvel
2025-11-27 15:06 ` Joey Gouly
2025-12-03 16:59 ` Ard Biesheuvel
2025-11-27 9:22 ` [RFC/RFT PATCH 3/6] random: Use u32 to keep track of batched entropy generation Ard Biesheuvel
2025-11-27 10:11 ` david laight
2025-11-27 10:15 ` Ard Biesheuvel
2025-11-27 9:22 ` [RFC/RFT PATCH 4/6] random: Use a lockless fast path for get_random_uXX() Ard Biesheuvel
2025-11-27 10:32 ` Ard Biesheuvel
2025-11-27 9:22 ` [RFC/RFT PATCH 5/6] random: Plug race in preceding patch Ard Biesheuvel
2025-11-28 11:13 ` david laight
2025-11-28 11:18 ` Ard Biesheuvel
2025-11-27 9:22 ` [RFC/RFT PATCH 6/6] randomize_kstack: Use get_random_u8() at entry for entropy Ard Biesheuvel
2025-11-27 12:12 ` [RFC/RFT PATCH 0/6] Improve get_random_u8() for use in randomize kstack Ryan Roberts
2025-11-27 12:28 ` Ard Biesheuvel
2025-11-27 13:08 ` Ryan Roberts
2025-11-27 14:18 ` Ryan Roberts
2025-11-27 15:03 ` Ard Biesheuvel
2025-11-27 15:40 ` Ard Biesheuvel
2025-11-27 15:56 ` Ryan Roberts
2025-11-27 16:58 ` Mark Rutland
2025-11-27 19:01 ` Ard Biesheuvel
2025-11-28 10:36 ` Ryan Roberts
2025-11-28 11:44 ` Mark Rutland
2025-11-28 10:07 ` Ard Biesheuvel
2025-11-28 10:32 ` Ryan Roberts
2025-11-28 10:36 ` Ard Biesheuvel
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