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Groups > linux.kernel > #1468107
| From | "H. Peter Anvin" <hpa@zytor.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 5/8] x86/head: remove useless zeroed word |
| Date | 2016-08-23 00:30 +0200 |
| Message-ID | <s95Tb-3OC-13@gated-at.bofh.it> (permalink) |
| References | <s7Bkt-3Yh-9@gated-at.bofh.it> <s7Bkt-3Yh-7@gated-at.bofh.it> <s95gt-3lP-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On August 22, 2016 2:48:46 PM PDT, Andi Kleen <andi@firstfloor.org> wrote: >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 Yes, seems pointlessly risky. -- Sent from my Android device with K-9 Mail. Please excuse brevity and formatting.
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[PATCH 5/8] x86/head: remove useless zeroed word Josh Poimboeuf <jpoimboe@redhat.com> - 2016-08-18 21:40 +0200
Re: [PATCH 5/8] x86/head: remove useless zeroed word Andi Kleen <andi@firstfloor.org> - 2016-08-22 23:50 +0200
Re: [PATCH 5/8] x86/head: remove useless zeroed word "H. Peter Anvin" <hpa@zytor.com> - 2016-08-23 00:30 +0200
Re: [PATCH 5/8] x86/head: remove useless zeroed word Brian Gerst <brgerst@gmail.com> - 2016-08-23 01:00 +0200
Re: [PATCH 5/8] x86/head: remove useless zeroed word "H. Peter Anvin" <hpa@zytor.com> - 2016-08-23 01:20 +0200
Re: [PATCH 5/8] x86/head: remove useless zeroed word Linus Torvalds <torvalds@linux-foundation.org> - 2016-08-23 01:10 +0200
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