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alloc_kernel_user_stack

strat9_kernel::process::thread_ops

Function alloc_kernel_user_stack 

Source 
fn alloc_kernel_user_stack(
    parent: &Arc<Task>,
    requested: u64,
) -> Result<(u64, u64), SyscallError>
Expand description

Allocate and lazily map a user stack in the parent process address space.

Returns (vaddr_base, aligned_size); the initial RSP is the top of the region. Pages are demand-paged (reserve_region) exactly like sys_mmap.