Re: [Xen-devel] [PATCH for-4.6] amend "x86/spec-ctrl: CPUID/MSR definitions for L1D_FLUSH"

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.08.18 at 09:57, <andrew.cooper3@xxxxxxxxxx> wrote:
> On 15/08/2018 08:47, Jan Beulich wrote:
>> This is part of XSA-273 / CVE-2018-3646.
>>
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> Oops yes.
> 
> Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
> 
> This isn't strictly needed for security, as L1D Flush is only needed by
> hypervisors, but its definitely odd to have it missing from 4.6.

Right. There are two issues with this patch though: For one I've
left a libxl hunk in which was not in fact missing from the original
patch. I've removed that. However, this patch depends on an
earlier missing adjustment to XSA-263, which I've noticed only
when trying to commit the one here. I've sent the other patch
a minute ago.

Jan



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