linux/arch/riscv
Song Shuai 7692c9b6ba riscv: kexec: Avoid deadlock in kexec crash path
[ Upstream commit c562ba719d ]

If the kexec crash code is called in the interrupt context, the
machine_kexec_mask_interrupts() function will trigger a deadlock while
trying to acquire the irqdesc spinlock and then deactivate irqchip in
irq_set_irqchip_state() function.

Unlike arm64, riscv only requires irq_eoi handler to complete EOI and
keeping irq_set_irqchip_state() will only leave this possible deadlock
without any use. So we simply remove it.

Link: https://lore.kernel.org/linux-riscv/20231208111015.173237-1-songshuaishuai@tinylab.org/
Fixes: b17d19a531 ("riscv: kexec: Fixup irq controller broken in kexec crash path")
Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Ryo Takakura <takakura@valinux.co.jp>
Link: https://lore.kernel.org/r/20240626023316.539971-1-songshuaishuai@tinylab.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-07-11 12:49:13 +02:00
..
boot riscv: dts: starfive: Remove PMIC interrupt info for Visionfive 2 board 2024-06-16 13:47:45 +02:00
configs Kbuild updates for v6.6 2023-09-05 11:01:47 -07:00
errata riscv: errata: andes: Probe for IOCP only once in boot stage 2023-12-13 18:45:19 +01:00
include riscv: Apply SiFive CIP-1200 workaround to single-ASID sfence.vma 2024-07-11 12:49:06 +02:00
kernel riscv: kexec: Avoid deadlock in kexec crash path 2024-07-11 12:49:13 +02:00
kvm RISC-V: KVM: Fix the initial sample period value 2024-07-11 12:49:04 +02:00
lib riscv: uaccess: Return the number of bytes effectively not copied 2023-08-16 07:30:06 -07:00
mm riscv: Apply SiFive CIP-1200 workaround to single-ASID sfence.vma 2024-07-11 12:49:06 +02:00
net riscv, bpf: make some atomic operations fully ordered 2024-06-12 11:11:54 +02:00
purgatory riscv/purgatory: Disable CFI 2023-08-23 14:16:40 -07:00
tools riscv: Check relocations at compile time 2023-04-19 07:46:32 -07:00
Kbuild kexec: rename ARCH_HAS_KEXEC_PURGATORY 2023-08-18 10:18:54 -07:00
Kconfig RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH 2024-03-06 14:48:41 +00:00
Kconfig.debug
Kconfig.errata riscv: only select DMA_DIRECT_REMAP from RISCV_ISA_ZICBOM and ERRATA_THEAD_PBMT 2023-10-26 09:42:38 +02:00
Kconfig.socs riscv: Kconfig: Add select ARM_AMBA to SOC_STARFIVE 2023-12-13 18:45:35 +01:00
Makefile kbuild: unify vdso_install rules 2024-06-12 11:12:32 +02:00
Makefile.postlink riscv: Use --emit-relocs in order to move .rela.dyn in init 2023-04-19 07:46:33 -07:00