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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,
	mark.rutland@arm.com, zouyipeng@huawei.com,
	bigeasy@linutronix.de, David.Laight@aculab.com,
	chenzhongjin@huawei.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 V6 00/11] riscv: Add GENERIC_ENTRY support and related features
Date: Sat,  1 Oct 2022 21:24:40 -0400	[thread overview]
Message-ID: <20221002012451.2351127-1-guoren@kernel.org> (raw)

From: Guo Ren <guoren@linux.alibaba.com>

The patches convert riscv to use the generic entry infrastructure from
kernel/entry/*. Additionally, add independent irq stacks (IRQ_STACKS)
for percpu to prevent kernel stack overflows. Add generic_entry based
STACKLEAK support.

You can directly try it with:
[1] https://github.com/guoren83/linux/tree/generic_entry_v6

v6:
 - Use THEAD_SIZE_ORDER for thread size adjustment in kconfig (Thx Arnd)
 - Move call_on_stack to inline style (Thx Peter Zijlstra)
 - Fixup fp chain broken (Thx Chen Zhongjin)
 - Remove common entry modification, and fixup page_fault entry (Thx
   Peter Zijlstra)
 - Treat some traps as nmi entry (Thx Peter Zijlstra)

v5:
https://lore.kernel.org/linux-riscv/20220918155246.1203293-1-guoren@kernel.org/
 - Add riscv own stackleak patch instead of generic entry modification
   (by Mark Rutland)
 - Add EXPERT dependency for THREAD_SIZE (by Arnd)
 - Add EXPERT dependency for IRQ_STACK (by Sebastian, David Laight)
 - Corrected __trap_section (by Peter Zijlstra)
 - Add Tested-by (Yipeng Zou)
 - Use CONFIG_SOFTIRQ_ON_OWN_STACK replace "#ifndef CONFIG_PREEMPT_RT"
 - Fixup systrace_enter compile error
 - Fixup exit_to_user_mode_prepare preempt_disable warning

V4:
https://lore.kernel.org/linux-riscv/20220908022506.1275799-1-guoren@kernel.org/
 - Fixup entry.S with "la" bug (by Conor.Dooley)
 - Fixup missing noinstr bug (by Peter Zijlstra)

V3:
https://lore.kernel.org/linux-riscv/20220906035423.634617-1-guoren@kernel.org/
 - 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:
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:
https://lore.kernel.org/linux-riscv/20220903163808.1954131-1-guoren@kernel.org/

Dao Lu (1):
  riscv: Add support for STACKLEAK gcc plugin

Guo Ren (8):
  riscv: elf_kexec: Fixup compile warning
  riscv: compat_syscall_table: Fixup compile warning
  riscv: ptrace: Remove duplicate operation
  riscv: traps: Add noinstr to prevent instrumentation inserted
  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

Jisheng Zhang (1):
  riscv: remove extra level wrappers of trace_hardirqs_{on,off}

Lai Jiangshan (1):
  compiler_types.h: Add __noinstr_section() for noinstr

 arch/riscv/Kconfig                    |  21 +++
 arch/riscv/include/asm/csr.h          |   1 -
 arch/riscv/include/asm/entry-common.h |   8 +
 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  |  27 +--
 arch/riscv/include/asm/vmap_stack.h   |  28 ++++
 arch/riscv/kernel/Makefile            |   3 +-
 arch/riscv/kernel/elf_kexec.c         |   2 +-
 arch/riscv/kernel/entry.S             | 230 +++-----------------------
 arch/riscv/kernel/irq.c               | 110 ++++++++++++
 arch/riscv/kernel/ptrace.c            |  44 -----
 arch/riscv/kernel/signal.c            |  21 +--
 arch/riscv/kernel/sys_riscv.c         |  27 +++
 arch/riscv/kernel/trace_irq.c         |  27 ---
 arch/riscv/kernel/trace_irq.h         |  11 --
 arch/riscv/kernel/traps.c             |  70 ++++++--
 arch/riscv/mm/fault.c                 |  14 +-
 drivers/firmware/efi/libstub/Makefile |   2 +-
 include/linux/compiler_types.h        |   8 +-
 21 files changed, 321 insertions(+), 354 deletions(-)
 create mode 100644 arch/riscv/include/asm/entry-common.h
 create mode 100644 arch/riscv/include/asm/vmap_stack.h
 delete mode 100644 arch/riscv/kernel/trace_irq.c
 delete mode 100644 arch/riscv/kernel/trace_irq.h

-- 
2.36.1


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             reply	other threads:[~2022-10-02  1:25 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-02  1:24 guoren [this message]
2022-10-02  1:24 ` [PATCH V6 01/11] riscv: elf_kexec: Fixup compile warning guoren
2022-10-25  1:20   ` liaochang (A)
2022-10-25  2:36     ` Guo Ren
2022-10-02  1:24 ` [PATCH V6 02/11] riscv: compat_syscall_table: " guoren
2022-10-02  1:24 ` [PATCH V6 03/11] riscv: ptrace: Remove duplicate operation guoren
2022-10-02  1:24 ` [PATCH V6 04/11] compiler_types.h: Add __noinstr_section() for noinstr guoren
2022-10-03 11:38   ` Mark Rutland
2022-10-08  1:54     ` Guo Ren
2022-10-20  9:15       ` Mark Rutland
2022-10-20 12:29         ` Guo Ren
2022-10-24 11:56           ` Mark Rutland
2022-10-24 12:06             ` Peter Zijlstra
2022-10-24 12:14               ` Mark Rutland
2022-10-25  2:51                 ` Guo Ren
2022-10-25  9:47                   ` Mark Rutland
2022-10-02  1:24 ` [PATCH V6 05/11] riscv: traps: Add noinstr to prevent instrumentation inserted guoren
2022-10-03 11:40   ` Mark Rutland
2022-10-08  2:16     ` Guo Ren
2022-10-02  1:24 ` [PATCH V6 06/11] riscv: convert to generic entry guoren
2022-10-02  1:24 ` [PATCH V6 07/11] riscv: Support HAVE_IRQ_EXIT_ON_IRQ_STACK guoren
2022-10-02  1:24 ` [PATCH V6 08/11] riscv: Support HAVE_SOFTIRQ_ON_OWN_STACK guoren
2022-10-02  1:24 ` [PATCH V6 09/11] riscv: Add support for STACKLEAK gcc plugin guoren
2022-10-03 11:34   ` Mark Rutland
2022-10-08  0:16     ` Guo Ren
2022-10-08  3:26     ` Guo Ren
2022-10-08  3:44       ` Guo Ren
2022-10-02  1:24 ` [PATCH V6 10/11] riscv: Add config of thread stack size guoren
2022-10-02  1:24 ` [PATCH V6 11/11] riscv: remove extra level wrappers of trace_hardirqs_{on,off} guoren

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