Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH 5/8] x86/head: remove useless zeroed word | Date | Mon, 22 Aug 2016 14:48:46 -0700 |
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Josh Poimboeuf <jpoimboe@redhat.com> writes:
> This zeroed word has no apparent purpose, so remove it. > > Brian Gerst says: > > "FYI the word used to be the SS segment selector for the LSS > instruction, which isn't needed in 64-bit mode." >
Seems dangerous. It wouldn't surprise me if some CPUs or x86 emulations load it anyways and trigger page faults if there is really nothing there.
-Andi
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