Function sbi_rt::remote_hfence_vvma_asid

source ·

pub fn remote_hfence_vvma_asid(
    hart_mask: HartMask,
    start_addr: usize,
    size: usize,
    asid: usize
) -> SbiRet

Expand description

Execute address space based HFENCE.VVMA for current virtual machine on remote harts.

This function instructs the remote harts to execute one or more HFENCE.VVMA instructions, covering the range of guest virtual addresses between start_addr and size for the given address space by asid and current virtual machine (by vmid in hgatp CSR) of calling hart.

This function call is only valid on harts implementing the RISC-V hypervisor extension.

§Return value

The possible return error codes returned in SbiRet.error are shown in the table below:

Return code	Description
`SbiRet::success()`	A remote fence was sent to all the targeted harts successfully.
`SbiRet::not_supported()`	This function is not supported as it is not implemented or one of the target hart does not support hypervisor extension.
`SbiRet::invalid_address()`	`start_addr` or `size` is not valid.

This function is defined in RISC-V SBI Specification chapter 8.6.