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[2001:678:a5c:1202:4fb5:f16a:579c:6dcb]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-553ac1f91ddsm1900394e87.250.2025.06.17.06.05.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Jun 2025 06:05:05 -0700 (PDT) From: Klara Modin To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, conor.dooley@microchip.com, valentina.fernandezalanis@microchip.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Klara Modin , stable@vger.kernel.org Subject: [PATCH] riscv: export boot_cpu_hartid Date: Tue, 17 Jun 2025 14:58:47 +0200 Message-ID: <20250617125847.23829-1-klarasmodin@gmail.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The mailbox controller driver for the Microchip Inter-processor Communication can be built as a module. It uses cpuid_to_hartid_map and commit 4783ce32b080 ("riscv: export __cpuid_to_hartid_map") enables that to work for SMP. However, cpuid_to_hartid_map uses boot_cpu_hartid on non-SMP kernels and this driver can be useful in such configurations[1]. Export boot_cpu_hartid so the driver can be built as a module on non-SMP kernels as well. Link: https://lore.kernel.org/lkml/20250617-confess-reimburse-876101e099cb@= spud/ [1] Cc: stable@vger.kernel.org Fixes: e4b1d67e7141 ("mailbox: add Microchip IPC support") Signed-off-by: Klara Modin Acked-by: Conor Dooley --- arch/riscv/kernel/setup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index f7c9a1caa83e..14888e5ea19a 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -50,6 +50,7 @@ atomic_t hart_lottery __section(".sdata") #endif ; unsigned long boot_cpu_hartid; +EXPORT_SYMBOL_GPL(boot_cpu_hartid); =20 /* * Place kernel memory regions on the resource tree so that --=20 2.49.0