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xen-ia64-devel
Re: [Xen-devel] Re: Next steps with pv_ops for Xen
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To: |
Isaku Yamahata <yamahata@xxxxxxxxxxxxx>, Derek Murray <Derek.Murray@xxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Re: Next steps with pv_ops for Xen |
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From: |
Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
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Date: |
Wed, 12 Dec 2007 08:39:41 +0000 |
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Cc: |
"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Eduardo Habkost <ehabkost@xxxxxxxxxx>, Juan Quintela <quintela@xxxxxxxxxx>, "Stephen C. Tweedie" <sct@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>, Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxxxxxx>, "virtualization@xxxxxxxxxxxxxx" <virtualization@xxxxxxxxxxxxxx>, Gerd Hoffmann <kraxel@xxxxxxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx |
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Wed, 12 Dec 2007 00:33:37 -0800 |
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<20071212082727.GA31492%yamahata@xxxxxxxxxxxxx> |
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[Xen-devel] Re: Next steps with pv_ops for Xen |
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Microsoft-Entourage/11.3.6.070618 |
We already make the VM_FOREIGN check conditional on defined(CONFIG_XEN). We
could add defined(CONFIG_X86) as well? This would seem reasonable as a
temporary measure for the old 2.6.18 tree.
-- Keir
On 12/12/07 08:27, "Isaku Yamahata" <yamahata@xxxxxxxxxxxxx> wrote:
> This patch breaks blktap and gntdev on ia64.
> With auto translated physmap mode enabled, bktap/gntdev update
> the pte entry with vm_insert_page(). Not direct updating it with
> the hypercall.
> So when zapping the pte entry, it is necessary to release page
> reference counting, rmapping and etc. Thus vm_normal_page() have
> to return the struct page when auto translated physmap mode is enabled.
>
> How about passing the page struct** to the zap_pte call back
> and set it to NULL if necessary?
> (or
> Can the condition be changed to check auto trasnalted physmap mode?
> or
> Should the clean up be done in zap_pte callback?)
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