Re: [kvm-ia64-devel] [PATCH 13/28] ia64/xen: introduce xenhypercall routines necessary for domU.

From: Isaku Yamahata <yamahata_at_valinux.co.jp>
Date: 2008-02-26 12:44:31
On Tue, Feb 26, 2008 at 02:36:51AM +0800, Dong, Eddie wrote:
> 
> > IA64 pv_ops frame work doesn't exist yet so that xen code does
> > in order to boot on both native and xen for now.
> > I expect those check will be eliminated during developing ia64 pv_ops.
> 
> Qing He & I am working on the pv_ops framework, hopefully we can get
> a draft soon :)

Great!
What I am aware of at this moment is,
(some of the following can be covered by machine vector, though.)

- early setup before start_kernel()
  Currently early_xen_setup() is directly called.
  Eventually extending ia64 boot protocol would be necessary, though.

- Initialization hooks
  struct pv_init_ops?
        void (*arch_setup_early)(void)
        void (*banner);
        void (*pre_pasing_init)(void);
        void (*post_pasing_init)(void);
        void (*post_allocator_init)(void);

- irq hooks
  struct pv_irq_ops
  - init_IRQ(), irq_init()
  - registering chip type
    register_intr()
  - assign_irq_vector()
  - free_irq_vector()
  - register_percpu_irq()  
  - send_ipi()
  - resend_irq()

- IOSAPIC hooks
  struct pv_iosapic_ops
  - iosapic_init()
  - iosapic_read()
  - iosapic_write()

-- 
yamahata
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Received on Tue Feb 26 12:44:44 2008

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