Re: [Xen-devel] [PATCH V3 0/4] Change fixed mmio handlers to a variable number

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 20 Jul 2016, Shanker Donthineni wrote:
> The maximum number of mmio handlers that are allowed is limited to
> a macro MAX_IO_HANDLER(16), which is not enough for supporting per CPU
> Redistributor regions. We need at least MAX_IO_HANDLER+CONFIG_NR_CPUS
> mmio handlers in order to support ACPI based XEN boot.
> 
> This patchset uses the dynamic allocation strategy to allocate memory
> resource dynamically depends on the number of Redistributor regions
> that are described in the APCI MADT table.
> 
> Shanker Donthineni (4):
>   arm/io: Use separate memory allocation for mmio handlers
>   xen: Add generic implementation of binary search
>   xen/arm: io: Use binary search for mmio handler lookup
>   arm/vgic: Change fixed number of mmio handlers to variable number
> 
>  xen/arch/arm/domain.c      | 12 +++++++----
>  xen/arch/arm/io.c          | 52 
> +++++++++++++++++++++++++++++++---------------
>  xen/arch/arm/vgic-v2.c     |  3 ++-
>  xen/arch/arm/vgic-v3.c     |  5 ++++-
>  xen/arch/arm/vgic.c        | 10 +++------
>  xen/common/Makefile        |  1 +
>  xen/common/bsearch.c       | 51 +++++++++++++++++++++++++++++++++++++++++++++
>  xen/include/asm-arm/mmio.h |  7 +++++--
>  xen/include/asm-arm/vgic.h |  5 +++--
>  xen/include/xen/lib.h      |  3 +++
>  10 files changed, 115 insertions(+), 34 deletions(-)
>  create mode 100644 xen/common/bsearch.c

Committed, thanks!

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