Re: [Xen-devel] [Qemu-devel] [PATCH 00/23] Remove cpu_get_physical_page_desc()

[Anthony Liguori <anthony@xxxxxxxxxxxxx>]

On 12/19/2011 08:13 AM, Avi Kivity wrote:
> cpu_get_physical_page_desc() exposes the internals of the memory core to
> callers; as such it prevents the refactoring planned there.  This patchset
> converts all callers memory API equivalents and removes the function.
>
> The conversion leaves a lot of potential for further cleanups; the
> MemoryListener API (which replaces CPUPhysMemoryClient) guarantees matched
> range_add and range_del calls, so the need to handle splitting is removed.
> This is left for later.
>
> Please review and test, especially the vhost and Xen parts, which I only
> build tested.
Other than the few style comments, the whole series looks reasonable to me.

Regards,

Anthony Liguori

> Also available from:
>
>    git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git memory/page_desc
>
> Avi Kivity (23):
>    memory: introduce memory_region_find()
>    sysbus: add sysbus_address_space()
>    memory: add memory_region_is_ram()
>    framebuffer: drop use of cpu_get_physical_page_desc()
>    memory: add memory_region_is_rom()
>    loader: remove calls to cpu_get_physical_page_desc()
>    framebuffer: drop use of cpu_physical_sync_dirty_bitmap()
>    memory: replace cpu_physical_sync_dirty_bitmap() with a memory API
>    memory: add API for observing updates to the physical memory map
>    memory: add memory_region_is_logging()
>    kvm: switch kvm slots to use host virtual address instead of
>      ram_addr_t
>    fixup: listener fixes
>    kvm: convert to MemoryListener API
>    vhost: convert to MemoryListener API
>    xen, vga: add API for registering the framebuffer
>    memory: temporarily add memory_region_get_ram_addr()
>    xen: convert to MemoryListener API
>    memory: remove CPUPhysMemoryClient
>    kvm: avoid cpu_get_physical_page_desc()
>    vhost: avoid cpu_get_physical_page_desc()
>    virtio-balloon: avoid cpu_get_physical_page_desc()
>    sparc: avoid cpu_get_physical_page_desc()
>    Remove cpu_get_physical_page_desc()
>
>   arch_init.c               |    6 +-
>   cpu-all.h                 |    9 --
>   cpu-common.h              |   24 ------
>   exec.c                    |  175 +---------------------------------------
>   hw/framebuffer.c          |   32 +++----
>   hw/framebuffer.h          |    3 +
>   hw/loader.c               |    9 +-
>   hw/milkymist-vgafb.c      |    2 +-
>   hw/omap_lcdc.c            |    4 +-
>   hw/pl110.c                |    2 +-
>   hw/pxa2xx_lcd.c           |   10 ++-
>   hw/sysbus.c               |    5 +
>   hw/sysbus.h               |    1 +
>   hw/vga.c                  |    2 +
>   hw/vhost.c                |  167 ++++++++++++++++++++++++++++++---------
>   hw/vhost.h                |    5 +-
>   hw/virtio-balloon.c       |   14 +++-
>   hw/xen.h                  |    3 +
>   kvm-all.c                 |  151 +++++++++++++++++++++--------------
>   kvm.h                     |    4 +-
>   memory.c                  |  193 ++++++++++++++++++++++++++++++++++++++++++---
>   memory.h                  |  127 +++++++++++++++++++++++++++++
>   target-i386/kvm.c         |    7 +-
>   target-sparc/mmu_helper.c |    5 +-
>   trace-events              |    2 +-
>   xen-all.c                 |  143 ++++++++++++++++++++-------------
>   xen-stub.c                |    4 +
>   27 files changed, 695 insertions(+), 414 deletions(-)

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