From: "Michael S. Tsirkin" <mst@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: "Yang, Sheng" <sheng.yang@intel.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: Mask bit support's API
Date: Tue, 23 Nov 2010 17:11:19 +0200 [thread overview]
Message-ID: <20101123151119.GB31722@redhat.com> (raw)
In-Reply-To: <4CEBCA5C.8040504@redhat.com>
On Tue, Nov 23, 2010 at 04:06:20PM +0200, Avi Kivity wrote:
> >>
> >> So instead of
> >>
> >> - guest reads/writes msix
> >> - kvm filters mmio, implements some, passes others to userspace
> >>
> >> we have
> >>
> >> - guest reads/writes msix
> >> - kvm implements all
> >> - some writes generate an additional notification to userspace
> >
> >I suppose we don't need to generate notification to userspace? Because every
> >read/write is handled by kernel, and userspace just need interface to kernel to
> >get/set the entry - and well, does userspace need to do it when kernel can handle
> >all of them? Maybe not...
>
> We could have the kernel handle addr/data writes by setting up an
> internal interrupt routing. A disadvantage is that more work is
> needed if we emulator interrupt remapping in qemu.
As an alternative, interrupt remapping will need some API rework, right?
Existing APIs only pass address/data for msi.
--
MST
next prev parent reply other threads:[~2010-11-23 15:11 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-23 6:09 Mask bit support's API Yang, Sheng
2010-11-23 6:17 ` Avi Kivity
2010-11-23 6:35 ` Yang, Sheng
2010-11-23 7:54 ` Avi Kivity
2010-11-23 8:30 ` Yang, Sheng
2010-11-23 12:47 ` Avi Kivity
2010-11-23 12:56 ` Michael S. Tsirkin
2010-11-23 13:57 ` Yang, Sheng
2010-11-23 14:06 ` Avi Kivity
2010-11-23 15:11 ` Michael S. Tsirkin [this message]
2010-11-23 15:24 ` Gleb Natapov
2010-11-23 16:10 ` Michael S. Tsirkin
2010-11-24 1:59 ` Yang, Sheng
2010-11-26 2:35 ` Yang, Sheng
2010-11-30 14:15 ` Avi Kivity
2010-12-01 2:36 ` Yang, Sheng
2010-12-02 13:09 ` Avi Kivity
2010-12-02 13:47 ` Michael S. Tsirkin
2010-12-02 13:56 ` Avi Kivity
2010-12-02 14:26 ` Michael S. Tsirkin
2010-12-02 14:54 ` Sheng Yang
2010-12-02 16:55 ` Michael S. Tsirkin
2010-12-03 3:03 ` Yang, Sheng
2010-11-23 12:04 ` Michael S. Tsirkin
2010-11-23 14:02 ` Yang, Sheng
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