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Re: [qemu-s390x] [PATCH v3 1/1] s390-ccw-virtio: allow for systems large
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From: |
Cornelia Huck |
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Subject: |
Re: [qemu-s390x] [PATCH v3 1/1] s390-ccw-virtio: allow for systems larger that 7.999TB |
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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).