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Date:      Thu, 1 Feb 2018 20:14:42 -0700
From:      "@lbutlr" <kremels@kreme.com>
To:        Freebsd Questions <freebsd-questions@freebsd.org>
Subject:   Re: Response to Meltdown and Spectre
Message-ID:  <F395799E-2C94-47E9-AA1C-5CB075C50076@kreme.com>
In-Reply-To: <CA%2BtpaK2o1nbY2W2JVRtogN=P2VM9rag_dodK=GtLWgKwNsYZkg@mail.gmail.com>
References:  <CY1PR01MB12472D916F78A638731ECCE68FFB0@CY1PR01MB1247.prod.exchangelabs.com> <23154.11945.856955.523027@jerusalem.litteratus.org> <5A726B60.7040606@gmail.com> <92120E50-19A7-4A44-90DF-505243D77259@kreme.com> <CA%2BtpaK2o1nbY2W2JVRtogN=P2VM9rag_dodK=GtLWgKwNsYZkg@mail.gmail.com>

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On 1 Feb 2018, at 16:04, Adam Vande More amvandemore@gmail.com> wrote:
>=20
> On Thu, Feb 1, 2018 at 3:48 PM, @lbutlr <kremels@kreme.com> wrote:
>=20
>> the trouble is that AMD's behavior has been at least as bad as =
Intel's, if
>> not worse, in regards to Meltdown,
>>=20
>=20
> Can you explain what provoked this assertion?

First, they violated (not technically, but they made it bloody obvious) =
the NDA so that the flaw was widely discovered a week early by adding a =
comment to a meltdown patch that lead every expert int he field straight =
to the vulnerability: "The AMD microarchitecture does not allow memory =
references, including speculative references, that access higher =
privileged data when running in a lesser privileged mode when that =
access would result in a page fault."

Second, they initially claimed they were would not release any firmware =
because they were entirely immune, which was untrue.

They were almost immediately proved to be vulnerable to some of the =
flaws.

Third, while Intel released (and continues to release) detailed =
technical information, AMD released PR statements.

Honestly, as bad as Intel has looked in the last month, AMD looks worse =
since they'd behaved like children.

--=20
Don't be afraid to be weak, Don't be too proud to be strong.




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