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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,
	bigeasy@linutronix.de
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-riscv@lists.infradead.org,
	Guo Ren <guoren@linux.alibaba.com>
Subject: [PATCH V3 0/7] riscv: Add GENERIC_ENTRY, irq stack support
Date: Mon,  5 Sep 2022 23:54:16 -0400	[thread overview]
Message-ID: <20220906035423.634617-1-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_v3

V3:
 - Fixup CONFIG_COMPAT=n compile error
 - Add THREAD_SIZE_ORDER config
 - Optimize elf_kexec.c warning fixup
 - Add static to irq_stack_ptr definition

V2:
 Link: https://lore.kernel.org/linux-riscv/20220904072637.8619-1-guoren@kernel.org/
 - Fixup compile error by include "riscv: ptrace: Remove duplicate
   operation"
 - Fixup compile warning
   Reported-by: kernel test robot <lkp@intel.com>
 - Add test repo link in cover letter

V1:
 Link: https://lore.kernel.org/linux-riscv/20220903163808.1954131-1-guoren@kernel.org/ 

Guo Ren (7):
  riscv: elf_kexec: Fixup compile warning
  riscv: compat_syscall_table: Fixup compile warning
  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: Add config of thread stack size

 arch/riscv/Kconfig                    |  19 ++
 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  |  19 +-
 arch/riscv/include/asm/vmap_stack.h   |  28 +++
 arch/riscv/kernel/Makefile            |   1 +
 arch/riscv/kernel/elf_kexec.c         |   2 +-
 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         |  27 +++
 arch/riscv/kernel/traps.c             |  11 ++
 arch/riscv/mm/fault.c                 |  12 +-
 18 files changed, 259 insertions(+), 285 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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             reply	other threads:[~2022-09-06  3:55 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-06  3:54 guoren [this message]
2022-09-06  3:54 ` [PATCH V3 1/7] riscv: elf_kexec: Fixup compile warning guoren
2022-09-06  3:54 ` [PATCH V3 2/7] riscv: compat_syscall_table: " guoren
2022-09-06  3:54 ` [PATCH V3 3/7] riscv: ptrace: Remove duplicate operation guoren
2022-09-06  3:54 ` [PATCH V3 4/7] riscv: convert to generic entry guoren
2022-09-06  9:20   ` Peter Zijlstra
2022-09-07  0:59     ` Guo Ren
2022-09-06  3:54 ` [PATCH V3 5/7] riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK guoren
2022-09-06  3:54 ` [PATCH V3 6/7] riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK guoren
2022-09-06  3:54 ` [PATCH V3 7/7] riscv: Add config of thread stack size guoren
2022-09-06 17:42 ` [PATCH V3 0/7] riscv: Add GENERIC_ENTRY, irq stack support Conor.Dooley
2022-09-07  0:54   ` Guo Ren
2022-09-07  2:52     ` Guo Ren
2022-09-07  6:23       ` Conor.Dooley
2022-09-07  7:06         ` Guo Ren

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