From: "Jan Beulich" <JBeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>, Xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH for-4.7] xen/hvm: Fix advertisment of available xstates following c/s c52319642
Date: Mon, 13 Jun 2016 03:48:45 -0600 [thread overview]
Message-ID: <575E9D9D02000078000F45BD@prv-mh.provo.novell.com> (raw)
In-Reply-To: <1465582663-15317-1-git-send-email-andrew.cooper3@citrix.com>
>>> On 10.06.16 at 20:17, <andrew.cooper3@citrix.com> wrote:
> PKU lives in CPUID.7[0].ECX, not EBX. This causes hardware with BMI1 to
> accidentally advertise PKU in CPUID.0xD[0].EAX. Any OS which proceeds to
> blindly write this into %xcr0 takes a #GP fault. (Experimentally, Windows
> Vista 32bit falls into this category.)
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
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next prev parent reply other threads:[~2016-06-13 9:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-10 18:17 [PATCH for-4.7] xen/hvm: Fix advertisment of available xstates following c/s c52319642 Andrew Cooper
2016-06-10 18:29 ` Wei Liu
2016-06-13 9:48 ` Jan Beulich [this message]
2016-06-13 10:42 ` Wei Liu
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