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Re: [qemu-s390x] [PATCH v3 1/1] s390-ccw-virtio: allow for systems large

From: Cornelia Huck
Subject: Re: [qemu-s390x] [PATCH v3 1/1] s390-ccw-virtio: allow for systems larger that 7.999TB
Date: Thu, 14 Dec 2017 14:21:38 +0100

On Mon, 11 Dec 2017 13:21:46 +0100
Christian Borntraeger <address@hidden> wrote:

> KVM does not allow memory regions > KVM_MEM_MAX_NR_PAGES, basically
> limiting the memory per slot to 8TB-4k. As memory slots on s390/kvm must
> be a multiple of 1MB we need start a new memory region if we cross
> 8TB-1M.
> With that (and optimistic overcommitment in the kernel) I was able to
> start a 24TB guest on a 1TB system.
> Signed-off-by: Christian Borntraeger <address@hidden>
> ---
>  hw/s390x/s390-virtio-ccw.c | 28 +++++++++++++++++++++++++---
>  1 file changed, 25 insertions(+), 3 deletions(-)

Thanks, applied (with 1UL -> 1ULL).

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