Struct x86_64::msr::MsrDevFile

pub struct MsrDevFile {
    dev_msr: File,
}

Wrap for userspace MSR file descriptor (/dev/cpu/*/msr).

Fields

dev_msr: File

Implementations

impl MsrDevFile

fn new(cpu_id: usize, read_only: bool) -> Result<Self>

Create a new MSR file descriptor.

“Passthrough” handler will create file descriptor with both read and write permissions. MsrHandlers controls read/write with MsrRWType. This avoids the corner case that some MSRs are read-only while other MSRs need write permission. “Emulate” handler will create read-only file descriptor. This read-only descriptor will only be used once to initialize MSR value and “Emulate” handler won’t store its descriptor at MsrHandlers level.

fn read(&self, index: u32) -> Result<u64>

fn write(&self, index: u32, data: u64) -> Result<()>