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[PAL/Linux-SGX] Remove no-XSAVE code paths (dead code) #1402

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[PAL/Linux-SGX] Remove no-XSAVE code paths (dead code) #1402

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Commits on Jun 19, 2023

  1. [PAL/Linux-SGX] Remove no-XSAVE code paths (dead code) 

    Commit "[PAL/Linux-SGX] Enforce AES-NI, XSAVE and RDRAND" enforced the
XSAVE CPU feature. The Linux-SGX PAL still had some code that used
no-XSAVE code paths, falling back to older FXSAVE. With that commit,
such code became dead code.

Also, this commit adds an additional enforcement: the OS must also
enable the XSAVE feature, which is reflected in CPUID.1:ECX.OSXSAVE.

Signed-off-by: Dmitrii Kuvaiskii <[email protected]>
    @dimakuv
    dimakuv committed Jun 19, 2023
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