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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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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; l=1270; i=leitao@debian.org; h=from:subject:message-id; bh=x8QOGtWB+FaUXQmrwaETRfFBKmxNNBcJSQRVAv+MXUM=; b=owEBbQKS/ZANAwAIATWjk5/8eHdtAcsmYgBoa+9DSBRMI8Y7WDeHlaRNjWDgkbdHTVhzsSsvE KRxvRSyGF+JAjMEAAEIAB0WIQSshTmm6PRnAspKQ5s1o5Of/Hh3bQUCaGvvQwAKCRA1o5Of/Hh3 bVKED/9r+4+juSqRb8Mc4iBHI9xw8ErDqMCrI12SJuUy7IbUOWXvJslgGnAt1e10WTa6qR76JVx iSB9b/Yrz4mg83zDv/8Z0t+YZvKRbB+jhnIYMVE+MjYqTJo3EuJ+Zy6VW2jxtrrp/h650qCN+hj o1mxdHmMHP1zRooSOi0xkjJpSL+rBc5si5G6l7lwe4NWzo5enJg2qHhmw2WDpgPa0ZsRuqMz65O K1cJRDCPwsYUKioooZJZbSe9lp4sSAj0Qfz6iqE2Vx2SmiWTMKJdGWT30lM8U8aTka9YoVh1peX uqAWQUegb+45HGHW9zRqGBPZeaIBrWwcDI0cR4Qdv+f9fYqgbfTGC7UHimmG8RGbdC52rN5TY8b A/prszx8n/q0m01cL2elWUmWTTe5N1fHbTTuDWn1hpgwMx0kQhbwoQssJNG++g10yIsS6GiYbnZ 6Xz2ADX+bL+8GsWsd/UDv/X4Nl1Gyaze6myHfKKVtbxnpdoESx5M/PVd/5WPgQVQ1apqRgbVE4d kAFjNZ1tIgr39Az5O1q12sXbf1IIRCCbz+rpTUQJv2m9JgNJ2Pkng3OW/lzYH0GATE/rmHT1YPf e59OeqXrDonSvnEp8Ubx9UEM3bgcUNt/YFIif/MsXq1xPCZ21vW+P7YK2DRgdJwLzppREiJAURr TXjI9Mg28CTMZCg== X-Developer-Key: i=leitao@debian.org; a=openpgp; fpr=AC8539A6E8F46702CA4A439B35A3939FFC78776D 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)); } =20 -#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) =3D 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_st= ack); - -static void init_irq_stacks(void) -{ - int cpu; - - for_each_possible_cpu(cpu) - per_cpu(irq_stack_ptr, cpu) =3D per_cpu(irq_stack, cpu); -} -#endif =20 #ifndef CONFIG_PREEMPT_RT static void ____do_softirq(struct pt_regs *regs) --=20 2.47.1