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Re: [Qemu-devel] [PatchV3] s390x: fix memory detection for guests > 64GB
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PatchV3] s390x: fix memory detection for guests > 64GB |
Date: |
Tue, 17 May 2011 16:03:30 +0200 |
On 17.05.2011, at 15:16, Alexander Graf wrote:
>
> On 12.05.2011, at 10:50, Christian Borntraeger wrote:
>
>>> I'd definitely prefer that over the change on vl.c :)
>>
>> the s390 memory detection has a 16bit field that specifies the amount of
>> increments. This patch adopts the memory size to always fit into that
>> scheme. This also fixes virtio detection for these guests, since the
>> descriptor page is located after the main memory.
>
> How did you test the patch?
>
> address@hidden:/home/agraf/git/qemu> ./s390x-softmmu/qemu-system-s390x
> -snapshot -nographic /media/studio/images/SUSE/s390/sles11.raw -kernel
> /boot/image -m 3600 -enable-kvm
>
> [works]
>
> address@hidden:/home/agraf/git/qemu> ./s390x-softmmu/qemu-system-s390x
> -snapshot -nographic /media/studio/images/SUSE/s390/sles11.raw -kernel
> /boot/image -m 3700 -enable-kvm
> qemu_madvise: Invalid argument
> Need MADV_DONTFORK in absence of synchronous KVM MMU
>
> address@hidden:/home/agraf/git/qemu> ./s390x-softmmu/qemu-system-s390x
> -snapshot -nographic /media/studio/images/SUSE/s390/sles11.raw -kernel
> /boot/image -m 3700 Segmentation fault
Ah, my fault - I had too little swap space :). Now I can even run an emulated
VM with >64GB of RAM - yay!
Alex
- [Qemu-devel] s390x: fix memory detection for guests > 64GB, Christian Borntraeger, 2011/05/10
- Re: [Qemu-devel] s390x: fix memory detection for guests > 64GB, Alexander Graf, 2011/05/11
- [Qemu-devel] [PatchV2] s390x: fix memory detection for guests > 64GB, Christian Borntraeger, 2011/05/12
- Re: [Qemu-devel] [PatchV2] s390x: fix memory detection for guests > 64GB, Alexander Graf, 2011/05/12
- Re: [Qemu-devel] [PatchV2] s390x: fix memory detection for guests > 64GB, Christian Borntraeger, 2011/05/12
- Re: [Qemu-devel] [PatchV2] s390x: fix memory detection for guests > 64GB, Alexander Graf, 2011/05/12
- Re: [Qemu-devel] [PatchV3] s390x: fix memory detection for guests > 64GB, Christian Borntraeger, 2011/05/12
- Re: [Qemu-devel] [PatchV3] s390x: fix memory detection for guests > 64GB, Alexander Graf, 2011/05/17
- Re: [Qemu-devel] [PatchV3] s390x: fix memory detection for guests > 64GB,
Alexander Graf <=