linux-kernel - [RFC PATCH v4 07/20] RISC-V: Kconfig: Select deferred GSI probe for ACPI systems

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Message-Id: <20240415170113.662318-8-sunilvl@ventanamicro.com>
Date: Mon, 15 Apr 2024 22:31:00 +0530
From: Sunil V L <sunilvl@...tanamicro.com>
To: linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org,
	acpica-devel@...ts.linux.dev
Cc: Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Anup Patel <anup@...infault.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Samuel Holland <samuel.holland@...ive.com>,
	Robert Moore <robert.moore@...el.com>,
	Haibo1 Xu <haibo1.xu@...el.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Andrew Jones <ajones@...tanamicro.com>,
	Atish Kumar Patra <atishp@...osinc.com>,
	Andrei Warkentin <andrei.warkentin@...el.com>,
	Marc Zyngier <maz@...nel.org>,
	Björn Töpel <bjorn@...nel.org>,
	Sunil V L <sunilvl@...tanamicro.com>
Subject: [RFC PATCH v4 07/20] RISC-V: Kconfig: Select deferred GSI probe for ACPI systems

On RISC-V platforms, apart from root interrupt controllers (which
provide local interrupts and IPI), other interrupt controllers in the
hierarchy are probed late. Enable this CONFIG option for RISC-V ACPI
based platforms.

Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
---
 arch/riscv/Kconfig   | 1 +
 drivers/acpi/Kconfig | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 69cc0509a19a..d8cdb3535e44 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -15,6 +15,7 @@ config RISCV
 	select ACPI_GENERIC_GSI if ACPI
 	select ACPI_MCFG if (ACPI && PCI)
 	select ACPI_REDUCED_HARDWARE_ONLY if ACPI
+	select ARCH_ACPI_DEFERRED_GSI if ACPI
 	select ARCH_DMA_DEFAULT_COHERENT
 	select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION
 	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if PGTABLE_LEVELS > 2
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index e3a7c2aedd5f..ebec1707f662 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -587,6 +587,9 @@ config ACPI_PRMT
 	  substantially increase computational overhead related to the
 	  initialization of some server systems.
 
+config ARCH_ACPI_DEFERRED_GSI
+	bool
+
 endif	# ACPI
 
 config X86_PM_TIMER
-- 
2.40.1