From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Dmitry Rockosov <rockosov@gmail.com>,
kevin.tian@intel.com, jun.nakajima@intel.com
Cc: Xen-devel <xen-devel@lists.xen.org>
Subject: Re: Virtual Interrupt Delivery
Date: Wed, 1 Mar 2017 15:35:36 -0500 [thread overview]
Message-ID: <20170301203536.GF8577@char.us.ORACLE.com> (raw)
In-Reply-To: <CAKkXUyoR7+oVugNrHjP_qCkGTGxE+7yXppBdX3hxJR_L8ioWww@mail.gmail.com>
On Mon, Feb 27, 2017 at 09:13:29PM +0300, Dmitry Rockosov wrote:
> Hi guys,
>
> Do you know when *recognized* Virtual Interrupt on VM-Entry will be
> delivered if Virtual-Interrupt Delivery is enabled and interrupt delivery
> is blocking by STI?
This sounds like a good question to the Intel maintainers, CC-ing them.
>
> Previously, VMM used Interrupt-Window, but as I see in XEN code,
> Interrupt-Window
> is not used when Virtual Interrupt Delivery is enabled.
Right, the Intel SDM has a whole section about that.
>
> Does it mean, we will get Virtual Interrupt on the next VM-entry?
By my understanding of the Intel SDM it depends on whether the
vector is one of those that the CPU can inject without involving
the VMM.
I would recommend you read the Intel SDM - the answer may be right
there.
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next prev parent reply other threads:[~2017-03-01 20:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-27 18:13 Virtual Interrupt Delivery Dmitry Rockosov
2017-03-01 20:35 ` Konrad Rzeszutek Wilk [this message]
2017-03-02 6:27 ` Tian, Kevin
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