[PATCH v5 02/17] arm64: stacktrace: Factor out on_accessible_stack_common()
From: Kalesh Singh <hidden>
Date: 2022-07-21 05:57:45
Also in:
kvmarm, lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Move common on_accessible_stack checks to stacktrace/common.h. This is used in the implementation of the nVHE hypervisor unwinder later in this series. Signed-off-by: Kalesh Singh <redacted> Reviewed-by: Fuad Tabba <redacted> Reviewed-by: Mark Brown <broonie@kernel.org> --- Changes in v5: - Add Reviewed-by tags from Mark Brown and Fuad - Remove random whitespace change, per Mark Brown arch/arm64/include/asm/stacktrace.h | 6 ++---- arch/arm64/include/asm/stacktrace/common.h | 18 ++++++++++++++++++ 2 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h
index 79f455b37c84..43f4b4a6d383 100644
--- a/arch/arm64/include/asm/stacktrace.h
+++ b/arch/arm64/include/asm/stacktrace.h@@ -65,8 +65,8 @@ static inline bool on_accessible_stack(const struct task_struct *tsk, unsigned long sp, unsigned long size, struct stack_info *info) { - if (info) - info->type = STACK_TYPE_UNKNOWN; + if (on_accessible_stack_common(tsk, sp, size, info)) + return true; if (on_task_stack(tsk, sp, size, info)) return true;
@@ -74,8 +74,6 @@ static inline bool on_accessible_stack(const struct task_struct *tsk, return false; if (on_irq_stack(sp, size, info)) return true; - if (on_overflow_stack(sp, size, info)) - return true; if (on_sdei_stack(sp, size, info)) return true;
diff --git a/arch/arm64/include/asm/stacktrace/common.h b/arch/arm64/include/asm/stacktrace/common.h
index 64ae4f6b06fe..f58b786460d3 100644
--- a/arch/arm64/include/asm/stacktrace/common.h
+++ b/arch/arm64/include/asm/stacktrace/common.h@@ -62,6 +62,9 @@ struct unwind_state { struct task_struct *task; }; +static inline bool on_overflow_stack(unsigned long sp, unsigned long size, + struct stack_info *info); + static inline bool on_stack(unsigned long sp, unsigned long size, unsigned long low, unsigned long high, enum stack_type type, struct stack_info *info)
@@ -80,6 +83,21 @@ static inline bool on_stack(unsigned long sp, unsigned long size, return true; } +static inline bool on_accessible_stack_common(const struct task_struct *tsk, + unsigned long sp, + unsigned long size, + struct stack_info *info) +{ + if (info) + info->type = STACK_TYPE_UNKNOWN; + + /* + * Both the kernel and nvhe hypervisor make use of + * an overflow_stack + */ + return on_overflow_stack(sp, size, info); +} + static inline void unwind_init_common(struct unwind_state *state, struct task_struct *task) {
--
2.37.0.170.g444d1eabd0-goog
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