From: Marcelo Tosatti <mtosatti@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: avi@redhat.com, kvm@vger.kernel.org, martignlo@gmail.com
Subject: Re: [PATCH] fix checking of cr0 validity
Date: Sat, 23 Jan 2010 16:47:46 -0200 [thread overview]
Message-ID: <20100123184744.GB24943@amt.cnet> (raw)
In-Reply-To: <20100121132846.GB17813@redhat.com>
On Thu, Jan 21, 2010 at 03:28:46PM +0200, Gleb Natapov wrote:
> Move to/from Control Registers chapter of Intel SDM says. "Reserved bits
> in CR0 remain clear after any load of those registers; attempts to set
> them have no impact". Control Register chapter says "Bits 63:32 of CR0 are
> reserved and must be written with zeros. Writing a nonzero value to any
> of the upper 32 bits results in a general-protection exception, #GP(0)."
>
> This patch tries to implement this twisted logic.
>
> Signed-off-by: Gleb Natapov <gleb@redhat.com>
> Reported-by: Lorenzo Martignoni <martignlo@gmail.com>
Applied, thanks. Changed "lu" to "UL".
Please use standard "KVM: .." subject lines.
prev parent reply other threads:[~2010-01-23 19:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-21 13:28 [PATCH] fix checking of cr0 validity Gleb Natapov
2010-01-23 18:47 ` Marcelo Tosatti [this message]
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