# Function _xrstor64

1.27.0 · Source

    pub unsafe fn _xrstor64(mem_addr: *const u8, rs_mask: u64)

Available on x86-64 and target feature `xsave` only.
Expand description

Performs a full or partial restore of the enabled processor states using the state information stored in memory at `mem_addr`.

State is restored based on bits `[62:0]` in `rs_mask`, `XCR0`, and `mem_addr.HEADER.XSTATE_BV`. `mem_addr` must be aligned on a 64-byte boundary.

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