From: Marcelo Tosatti <mtosatti@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: MMU: simplify folding of dirty bit into accessed_dirty
Date: Mon, 7 Jan 2013 20:31:50 -0200 [thread overview]
Message-ID: <20130107223150.GC1139@amt.cnet> (raw)
In-Reply-To: <20121227124458.GP17584@redhat.com>
On Thu, Dec 27, 2012 at 02:44:58PM +0200, Gleb Natapov wrote:
> MMU code tries to avoid if()s HW is not able to predict reliably by using
> bitwise operation to streamline code execution, but in case of a dirty bit
> folding this gives us nothing since write_fault is checked right before
> the folding code. Lets just piggyback onto the if() to make code more clear.
>
> Signed-off-by: Gleb Natapov <gleb@redhat.com>
Applied, thanks.
prev parent reply other threads:[~2013-01-07 23:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-27 12:44 [PATCH] KVM: MMU: simplify folding of dirty bit into accessed_dirty Gleb Natapov
2013-01-07 22:31 ` Marcelo Tosatti [this message]
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