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Re: [Xen-devel] [PATCH v2 1/2] x86: add p2m_mmio_write_dm
- To: David Vrabel <david.vrabel@xxxxxxxxxx>, "Ye, Wei" <wei.ye@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
- From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
- Date: Mon, 25 Aug 2014 22:17:52 +0000
- Accept-language: en-US
- Cc: "keir@xxxxxxx" <keir@xxxxxxx>, "ian.campbell@xxxxxxxxxx" <ian.campbell@xxxxxxxxxx>, "stefano.stabellini@xxxxxxxxxxxxx" <stefano.stabellini@xxxxxxxxxxxxx>, "tim@xxxxxxx" <tim@xxxxxxx>, "ian.jackson@xxxxxxxxxxxxx" <ian.jackson@xxxxxxxxxxxxx>, "Dugger, Donald D" <donald.d.dugger@xxxxxxxxx>, "Paul.Durrant@xxxxxxxxxx" <Paul.Durrant@xxxxxxxxxx>, "Lv, Zhiyuan" <zhiyuan.lv@xxxxxxxxx>, "JBeulich@xxxxxxxx" <JBeulich@xxxxxxxx>, "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>
- Delivery-date: Mon, 25 Aug 2014 22:18:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
- Thread-index: AQHPvbhMekp5YQ+fCkiajiRLudVOapvcFyoAgAXSEcA=
- Thread-topic: [Xen-devel] [PATCH v2 1/2] x86: add p2m_mmio_write_dm
> From: David Vrabel [mailto:david.vrabel@xxxxxxxxxx]
> Sent: Friday, August 22, 2014 6:24 AM
>
> On 22/08/14 20:18, Wei Ye wrote:
> > Add an new p2m type p2m_mmio_write_dm. Page of this type is read
> > only, and write will go to the device model for emulation just like
> > a mmio.
>
> This type appears to be identical in behaviour to p2m_ram_ro?
>
no. p2m_ram_ro abandons writes, while p2m_mmio_write_dm emulates
writes.
Thanks
Kevin
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