# Function core::arch::x86_64::_xsaves64

1.27.0 · source · [−]

    pub unsafe fn _xsaves64(mem_addr: *mut u8, save_mask: u64)

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

Performs a full or partial save of the enabled processor states to memory at `mem_addr`

`xsaves` differs from xsave in that it can save state components corresponding to bits set in `IA32_XSS` `MSR` and that it may use the modified optimization. State is saved based on bits `[62:0]` in `save_mask` and `XCR0`. `mem_addr` must be aligned on a 64-byte boundary.

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