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

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Date:	Wed, 20 Jul 2016 08:59:45 -0500
From:	Shanker Donthineni <shankerd@...eaurora.org>
To:	Marc Zyngier <marc.zyngier@....com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Vikram Sethi <vikrams@...eaurora.org>,
	Philip Elcan <pelcan@...eaurora.org>
Subject: Re: [PATCH V3 0/4] Change fixed mmio handlers to a variable number

Hi All,

I am very sorry, and it is my mistake for sending this patchset to 
linux-kernel mailing list. Please don't look at this one.

On 07/20/2016 08:53 AM, 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
>

-- 
Shanker Donthineni
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.