Re: [Xen-devel] [PATCH 0/4] XSA-52..54 follow-up

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 04/06/2013 08:58, "Jan Beulich" <JBeulich@xxxxxxxx> wrote:

> The first patch really isn't as much of a follow-up than what triggered
> the security issues to be noticed in the first place.
> 
> 1: x86: preserve FPU selectors for 32-bit guest code
> 2: x86: fix XCR0 handling
> 3: x86/xsave: adjust state management
> 4: x86/fxsave: bring in line with recent xsave adjustments
> 
> The first two I would see as candidates for 4.3 (as well as
> subsequent backporting, albeit I realize that especially the first
> one is non-trivial), while the third is code improvement only,
> and the fourth is really just cleanup, and hence I'd be fine with
> deferring them until after 4.3.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

I like the patches, 1 & 2 are good bug fixes.
Acked-by: Keir Fraser <keir@xxxxxxx>

Patch #1 is quite scary though! I wonder really whether these long-lived
issues must be fixed right now, let alone backported?

 -- Keir



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