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new 3129c063907 arch/arm64: disable fork support in protected build mode
3129c063907 is described below
commit 3129c063907bf1949c4f89ac59921aafe36ec6bd
Author: hujun5 <[email protected]>
AuthorDate: Sat Apr 26 15:27:55 2025 +0800
arch/arm64: disable fork support in protected build mode
Modify ARM64 architecture configuration to disable fork support in protected
build mode (BUILD_PROTECTED). Update ARCH_HAVE_FORK condition from
"!BUILD_KERNEL" to "!BUILD_KERNEL && !BUILD_PROTECTED", ensuring fork is
only available in flat/monolithic builds, not in protected kernel builds.
Signed-off-by: hujun5 <[email protected]>
---
Documentation/reference/user/01_task_control.rst | 4 +++-
arch/Kconfig | 2 +-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/Documentation/reference/user/01_task_control.rst
b/Documentation/reference/user/01_task_control.rst
index 60d22a0288d..e673d712776 100644
--- a/Documentation/reference/user/01_task_control.rst
+++ b/Documentation/reference/user/01_task_control.rst
@@ -358,7 +358,9 @@ Functions
NOTE: ``vfork()`` is not an independent NuttX feature, but is
implemented in architecture-specific logic (using only helper
functions from the NuttX core logic). As a result, ``vfork()`` may
- not be available on all architectures.
+ not be available on all architectures. The current implementation in
+ NuttX arm64 only guarantees that ``vfork()`` works when
+ CONFIG_BUILD_FLAT=y.
:return: Upon successful completion, ``vfork()`` returns 0 to
the child process and returns the process ID of the child process to the
diff --git a/arch/Kconfig b/arch/Kconfig
index e54b8a128a4..0ddcdb50c40 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -29,7 +29,7 @@ config ARCH_ARM64
select ARCH_64BIT
select ARCH_HAVE_BACKTRACE
select ARCH_HAVE_INTERRUPTSTACK
- select ARCH_HAVE_FORK if !BUILD_KERNEL
+ select ARCH_HAVE_FORK if !BUILD_KERNEL && !BUILD_PROTECTED
select ARCH_HAVE_STACKCHECK
select ARCH_HAVE_CUSTOMOPT
select ARCH_HAVE_STDARG_H
