Re: [PATCH v2] kvm: x86: zero EFER on INIT

From	Radim Krčmář <rkrcmar@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] kvm: x86: zero EFER on INIT
Date	2015-10-19 16:50 +0200
Message-ID	<qljV7-7oG-5@gated-at.bofh.it> (permalink)
References	<qlf58-lZ-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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2015-10-19 11:35+0200, Paolo Bonzini:
> Not zeroing EFER means that a 32-bit firmware cannot enter paging mode
> without clearing EFER.LME first (which it should not know about).
> Yang Zhang from Intel confirmed that the manual is wrong and EFER is
> cleared to zero on INIT.

Also in APM v2, "Table 14-1. Initial Processor State.".

> 
> Fixes: d28bc9dd25ce023270d2e039e7c98d38ecbf7758
> Cc: stable@vger.kernel.org
> Cc: Yang Z Zhang <yang.z.zhang@intel.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
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[PATCH v2] kvm: x86: zero EFER on INIT Paolo Bonzini <pbonzini@redhat.com> - 2015-10-19 11:40 +0200
  Re: [PATCH v2] kvm: x86: zero EFER on INIT Radim Krčmář <rkrcmar@redhat.com> - 2015-10-19 16:50 +0200

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