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Mon, 07 Jul 2025 09:01:12 -0700 (PDT) Received: from localhost ([2a03:2880:20ff:70::]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4a9949e4ca4sm64253881cf.6.2025.07.07.09.01.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Jul 2025 09:01:12 -0700 (PDT) From: Breno Leitao Date: Mon, 07 Jul 2025 09:01:04 -0700 Subject: [PATCH 4/8] arm64: remove CONFIG_VMAP_STACK conditionals from irq stack setup MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250707-arm64_vmap-v1-4-8de98ca0f91c@debian.org> References: <20250707-arm64_vmap-v1-0-8de98ca0f91c@debian.org> In-Reply-To: <20250707-arm64_vmap-v1-0-8de98ca0f91c@debian.org> To: Catalin Marinas , Will Deacon , Ard Biesheuvel Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, Breno Leitao , leo.yan@arm.com, kernel-team@meta.com, mark.rutland@arm.com X-Mailer: b4 0.15-dev-42535 X-Developer-Signature: v=1; a=openpgp-sha256; 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fpr=AC8539A6E8F46702CA4A439B35A3939FFC78776D X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250707_090113_881980_11CDA168 X-CRM114-Status: GOOD ( 10.58 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With VMAP_STACK always enabled on arm64, drop the CONFIG_VMAP_STACK checks and legacy irq stack allocation from arch/arm64/kernel/irq.c. The code now unconditionally uses the VMAP_STACK path for irq stack initialization, simplifying the logic. Signed-off-by: Breno Leitao --- arch/arm64/kernel/irq.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c index 85087e2df564..c0065a1d77cf 100644 --- a/arch/arm64/kernel/irq.c +++ b/arch/arm64/kernel/irq.c @@ -51,7 +51,6 @@ static void init_irq_scs(void) scs_alloc(early_cpu_to_node(cpu)); } -#ifdef CONFIG_VMAP_STACK static void __init init_irq_stacks(void) { int cpu; @@ -62,18 +61,6 @@ static void __init init_irq_stacks(void) per_cpu(irq_stack_ptr, cpu) = p; } } -#else -/* irq stack only needs to be 16 byte aligned - not IRQ_STACK_SIZE aligned. */ -DEFINE_PER_CPU_ALIGNED(unsigned long [IRQ_STACK_SIZE/sizeof(long)], irq_stack); - -static void init_irq_stacks(void) -{ - int cpu; - - for_each_possible_cpu(cpu) - per_cpu(irq_stack_ptr, cpu) = per_cpu(irq_stack, cpu); -} -#endif #ifndef CONFIG_PREEMPT_RT static void ____do_softirq(struct pt_regs *regs) -- 2.47.1