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SubjectRE: [PATCH] x86/ia32: Do not modify the DPL bits for a null selector
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> Thus 3 as a selector is the same as 0, and it doesn't matter to change it or not. But
> when IRET sees an invalid segment register in ES, FS, GS, and DS, it sets it to 0,
> making 0 a preferred null selector value.

To clarify, an invalid segment register value includes NULL selector values.

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