# Function sfence_vma_asid

Source

    pub unsafe fn sfence_vma_asid(asid: usize)

🔬This is a nightly-only experimental API. (`riscv_ext_intrinsics` #114544)
Available on RISC-V RV64 only.
Expand description

Supervisor memory management fence for given address space

The fence orders all reads and writes made to any level of the page tables, but only for the address space identified by integer parameter `asid`.

Accesses to global mappings are not ordered. The fence also invalidates all address-translation cache entries matching the address space identified by integer parameter `asid`, except for entries containing global mappings.