From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx>
This patch series adds independent irq/softirq stacks to decrease the
press of the thread stack. Also, add a thread STACK_SIZE config for
users to adjust the proper size during compile time.
This patch series belonged to the generic entry, which has been merged
to for-next now.
v13:
- Rebase on riscv/for-next commit d5e45e810e0e ("Merge patch series
"riscv: Add vector ISA support"")
- Rmove unnecessary BUILD_BUG_ON(). (Thx Clément)
v12:
https://lore.kernel.org/linux-riscv/20230529084600.2878130-1-guoren@xxxxxxxxxx/
- Rebase on palmer/for-next (20230529)
- Move DECLARE_PER_CPU(ulong *, irq_stack_ptr) into irq_stack.h (Thx
Conor)
- Optimize commit msg
v11:
https://lore.kernel.org/linux-riscv/20230324071239.151677-1-guoren@xxxxxxxxxx/
- Rebase on palmer/for-next (20230324)
- Separate from generic entry patch series.
v10:
https://lore.kernel.org/linux-riscv/20221208025816.138712-1-guoren@xxxxxxxxxx/
- Rebase on palmer/for-next branch (20221208)
- Remove unrelated patches from the series (Suggested-by: Bjorn)
- Fixup Typos.
v9:
https://lore.kernel.org/linux-riscv/20221130034059.826599-1-guoren@xxxxxxxxxx/
- Fixup NR_syscalls check (by Ben Hutchings)
- Add Tested-by: Jisheng Zhang
v8:
https://lore.kernel.org/linux-riscv/20221103075047.1634923-1-guoren@xxxxxxxxxx/
- Rebase on palmer/for-next branch (20221102)
- Add save/restore_from_x5_to_x31 .macro (JishengZhang)
- Consolidate ret_from_kernel_thread into ret_from_fork (JishengZhang)
- Optimize __noinstr_section comment (JiangshanLai)
v7:
https://lore.kernel.org/linux-riscv/20221015114702.3489989-1-guoren@xxxxxxxxxx/
- Fixup regs_irqs_disabled with SR_PIE
- Optimize stackleak_erase -> stackleak_erase_on_task_stack (Thx Mark
Rutland)
- Add BUG_ON(!irqs_disabled()) in trap handlers
- Using regs_irqs_disabled in __do_page_fault
- Remove unnecessary irq disable in ret_from_exception and add comment
v6:
https://lore.kernel.org/linux-riscv/20221002012451.2351127-1-guoren@xxxxxxxxxx/
- 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@xxxxxxxxxx/
- 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@xxxxxxxxxx/
- 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@xxxxxxxxxx/
- 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@xxxxxxxxxx/
- Fixup compile error by include "riscv: ptrace: Remove duplicate
operation"
- Fixup compile warning
Reported-by: kernel test robot <lkp@xxxxxxxxx>
- Add test repo link in cover letter
V1:
https://lore.kernel.org/linux-riscv/20220903163808.1954131-1-guoren@xxxxxxxxxx/
Guo Ren (3):
riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK
riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK
riscv: stack: Add config of thread stack size
arch/riscv/Kconfig | 19 ++++++++
arch/riscv/include/asm/irq_stack.h | 30 ++++++++++++
arch/riscv/include/asm/thread_info.h | 14 ++----
arch/riscv/kernel/irq.c | 68 ++++++++++++++++++++++++++++
arch/riscv/kernel/traps.c | 35 +++++++++++++-
5 files changed, 153 insertions(+), 13 deletions(-)
create mode 100644 arch/riscv/include/asm/irq_stack.h
--
2.36.1
