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    SubjectRe: [Xen-devel] [PATCH v4 00/20] xen/arm64: Add support for 64KB page in Linux
    Hi,

    A quick update on the TODO.

    On 07/09/15 16:33, Julien Grall wrote:
    > ARM64 Linux is supporting both 4KB and 64KB page granularity. Although, Xen
    > hypercall interface and PV protocol are always based on 4KB page granularity.
    >
    > Any attempt to boot a Linux guest with 64KB pages enabled will result to a
    > guest crash.
    >
    > This series is a first attempt to allow those Linux running with the current
    > hypercall interface and PV protocol.
    >
    > This solution has been chosen because we want to run Linux 64KB in released
    > Xen ARM version or/and platform using an old version of Linux DOM0.
    >
    > There is room for improvement, such as support of 64KB grant, modification
    > of PV protocol to support different page size... They will be explored in a
    > separate patch series later.
    >
    > TODO list:
    > - Convert swiotlb to 64KB

    Sent http://lists.xen.org/archives/html/xen-devel/2015-09/msg01292.html

    > - Convert xenfb to 64KB
    > - Support for multiple page ring support
    > - Support for 64KB in gnttdev
    > - Support of non-indirect grant with 64KB frontend

    Sent http://lists.xen.org/archives/html/xen-devel/2015-09/msg01577.html

    > - It may be possible to move some common define between
    > netback/netfront and blkfront/blkback in an header
    >
    > I've got most of the patches for the TODO items. I'm planning to send them as
    > a follow-up as it's not a requirement for a basic guests.
    >
    > All patches has been built tested for ARM32, ARM64, x86. But I haven't tested
    > to run it on x86 as I don't have a box with Xen x86 running. I would be
    > happy if someone give a try and see possible regression for x86.
    >
    > I know that Konrad as a test-suite for x86. Konrand, would it be possible to
    > give a run to for this series?
    >
    > A branch based on the latest xentip/for-linus-4.3 can be found here:
    >
    > git://xenbits.xen.org/people/julieng/linux-arm.git branch xen-64k-v4

    I will resend a new version when 4.3-rc1 is out in order to fix any
    possible conflict with linux/master. I already know that the netback
    patch (#18) is conflicting with 1d5d48523900a4b0f25d6b52f1a93c84bd671186
    "xen-netback: require fewer guest Rx slots when not using GSO".

    If the 2 series above are completely acked/reviewed, I will fold them in
    this series.

    Regards,

    --
    Julien Grall


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