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Mon, 17 Feb 2025 00:57:48 -0800 (PST) From: Anup Patel To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org Cc: hpa@zytor.com, Marc Zyngier , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Palmer Dabbelt , Paul Walmsley , Atish Patra , Andrew Jones , Sunil V L , Anup Patel , linux-riscv@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, Anup Patel Subject: [PATCH v6 00/10] RISC-V IMSIC driver improvements Date: Mon, 17 Feb 2025 14:26:46 +0530 Message-ID: <20250217085657.789309-1-apatel@ventanamicro.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250217_085752_590943_90364619 X-CRM114-Status: GOOD ( 12.47 ) 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 This series is based on recent discussion on LKML: https://lore.kernel.org/lkml/20241114161845.502027-18-ajones@ventanamicro.com/ It primarily focuses on moving to RISC-V IMSIC driver use common MSI lib and GENERIC_PENDING_IRQ. PATCH1 & PATCH2: Preparatory patches PATCH3: Updates IMSIC driver to use MSI lib PATCH4 to PATCH5: Preparatory patches for moving to GENERIC_PENDING_IRQ PATCH6 to PATCH10: Patches to use GENERIC_PENDING_IRQ in IMSIC driver These patches can also be found in the riscv_imsic_imp_v6 branch at: https://github.com/avpatel/linux.git Changes since v5: - Rebased upon Linux-6.14-rc1 - Drop PATCH6 since it is already merged - Update commit description of PATCH1 Changes since v4: - Updated PATCH4 with better irq_force_complete_move() implementation provided by Thomas. Changes since v3: - Dropped PATCH1 of v3 series and updated last patch of this series to handle the intermediate state for non-atomic MSI update. - Added new PATCH6 in this series to remove stale kconfig option GENERIC_PENDING_IRQ_CHIPFLAGS. Changes since v2: - Rebased upon Linux-6.14-rc1 - Dropped PATCH5 of v2 series since that patch is already merged Changes since v1: - Changed series subject - Expand this series to use GENERIC_PENDING_IRQ in IMSIC driver Andrew Jones (1): irqchip/riscv-imsic: Set irq_set_affinity for IMSIC base Anup Patel (6): genirq: Introduce irq_can_move_in_process_context() RISC-V: Select GENERIC_PENDING_IRQ irqchip/riscv-imsic: Separate next and previous pointers in IMSIC vector irqchip/riscv-imsic: Implement irq_force_complete_move() for IMSIC irqchip/riscv-imsic: Replace hwirq with irq in the IMSIC vector irqchip/riscv-imsic: Special handling for non-atomic device MSI update Thomas Gleixner (3): irqchip/irq-msi-lib: Optionally set default irq_eoi/irq_ack irqchip/riscv-imsic: Move to common MSI lib genirq: Introduce common irq_force_complete_move() implementation arch/riscv/Kconfig | 1 + arch/x86/kernel/apic/vector.c | 231 ++++++++++----------- drivers/irqchip/Kconfig | 8 +- drivers/irqchip/irq-gic-v2m.c | 1 + drivers/irqchip/irq-imx-mu-msi.c | 1 + drivers/irqchip/irq-msi-lib.c | 11 +- drivers/irqchip/irq-mvebu-gicp.c | 1 + drivers/irqchip/irq-mvebu-odmi.c | 1 + drivers/irqchip/irq-mvebu-sei.c | 1 + drivers/irqchip/irq-riscv-imsic-early.c | 14 +- drivers/irqchip/irq-riscv-imsic-platform.c | 197 +++++++++--------- drivers/irqchip/irq-riscv-imsic-state.c | 152 ++++++++++---- drivers/irqchip/irq-riscv-imsic-state.h | 12 +- include/linux/irq.h | 7 +- include/linux/msi.h | 11 + kernel/irq/internals.h | 2 + kernel/irq/migration.c | 21 ++ 17 files changed, 389 insertions(+), 283 deletions(-)