Re: [Xen-devel] [PATCH v4 0/3] x86: modify_ldt improvement, test, and config option

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 07/25/2015 01:36 AM, Andy Lutomirski wrote:
> Here's v3.  It fixes the "dazed and confused" issue, I hope.  It's also
> probably a good general attack surface reduction, and it replaces some
> scary code with IMO less scary code.
>
> Also, servers and embedded systems should probably turn off modify_ldt.
> This makes that possible.
>
> Xen people, can you take a look at this?
>
> Willy and Kees: I left the config option alone.  The -tiny people will
> like it, and we can always add a sysctl of some sort later.
>
> Changes from v3:
>   - Hopefully fixed Xen.
32b-on-32b fails in the same manner. (but non-zero LDT is taken care of)

>   - Fixed 32-bit test case on 32-bit native kernel.
I am not sure I see what changed.

-boris

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