From: guoren@kernel.org
To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com,
tglx@linutronix.de, peterz@infradead.org, luto@kernel.org,
conor.dooley@microchip.com, heiko@sntech.de, jszhang@kernel.org,
lazyparser@gmail.com, falcon@tinylab.org, chenhuacai@kernel.org,
apatel@ventanamicro.com, atishp@atishpatra.org,
palmer@dabbelt.com, paul.walmsley@sifive.com
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-riscv@lists.infradead.org,
Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V2 0/6] riscv: Add GENERIC_ENTRY, IRQ_STACKS support
Date: Sun, 4 Sep 2022 03:26:31 -0400 [thread overview]
Message-ID: <20220904072637.8619-1-guoren@kernel.org> (raw)
From: Guo Ren <guoren@linux.alibaba.com>
The patches convert riscv to use the generic entry infrastructure from
kernel/entry/*. Add independent irq stacks (IRQ_STACKS) for percpu to
prevent kernel stack overflows. Add the HAVE_SOFTIRQ_ON_OWN_STACK
feature for the IRQ_STACKS config. You can try it directly with [1].
[1] https://github.com/guoren83/linux/tree/generic_entry_v2
Changes in V2:
- Fixup compile error by include "riscv: ptrace: Remove duplicate
operation"
https://lore.kernel.org/linux-riscv/20220903162328.1952477-2-guoren@kernel.org/T/#u
- Fixup compile warning
Reported-by: kernel test robot <lkp@intel.com>
- Add test repo link in cover letter
Guo Ren (6):
riscv: ptrace: Remove duplicate operation
riscv: convert to generic entry
riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK
riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK
riscv: elf_kexec: Fixup compile warning
riscv: compat_syscall_table: Fixup compile warning
arch/riscv/Kconfig | 10 +
arch/riscv/include/asm/csr.h | 1 -
arch/riscv/include/asm/entry-common.h | 8 +
arch/riscv/include/asm/irq.h | 3 +
arch/riscv/include/asm/ptrace.h | 10 +-
arch/riscv/include/asm/stacktrace.h | 5 +
arch/riscv/include/asm/syscall.h | 6 +
arch/riscv/include/asm/thread_info.h | 15 +-
arch/riscv/include/asm/vmap_stack.h | 28 +++
arch/riscv/kernel/Makefile | 1 +
arch/riscv/kernel/elf_kexec.c | 4 +
arch/riscv/kernel/entry.S | 255 +++++---------------------
arch/riscv/kernel/irq.c | 75 ++++++++
arch/riscv/kernel/ptrace.c | 41 -----
arch/riscv/kernel/signal.c | 21 +--
arch/riscv/kernel/sys_riscv.c | 26 +++
arch/riscv/kernel/traps.c | 11 ++
arch/riscv/mm/fault.c | 12 +-
18 files changed, 250 insertions(+), 282 deletions(-)
create mode 100644 arch/riscv/include/asm/entry-common.h
create mode 100644 arch/riscv/include/asm/vmap_stack.h
--
2.36.1
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next reply other threads:[~2022-09-04 7:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-04 7:26 guoren [this message]
2022-09-04 7:26 ` [PATCH V2 1/6] riscv: ptrace: Remove duplicate operation guoren
2022-09-04 7:26 ` [PATCH V2 2/6] riscv: convert to generic entry guoren
2022-09-04 7:26 ` [PATCH V2 3/6] riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK guoren
2022-09-04 7:26 ` [PATCH V2 4/6] riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK guoren
2022-09-04 7:26 ` [PATCH V2 5/6] riscv: elf_kexec: Fixup compile warning guoren
2022-09-04 10:36 ` Conor.Dooley
2022-09-04 10:56 ` Guo Ren
2022-09-04 11:13 ` Conor.Dooley
2022-09-04 11:55 ` Guo Ren
2022-09-04 7:26 ` [PATCH V2 6/6] riscv: compat_syscall_table: " guoren
2022-09-04 10:08 ` Conor.Dooley
2022-09-04 10:17 ` [PATCH V2 0/6] riscv: Add GENERIC_ENTRY, IRQ_STACKS support Conor.Dooley
2022-09-04 10:40 ` Guo Ren
2022-09-04 11:05 ` Guo Ren
2022-09-05 13:18 ` Jisheng Zhang
2022-09-06 1:55 ` Guo Ren
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