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openSUSE:Evergreen:11.2:Test
kvm
kvm-qemu-preXX-balloon-report-overflow.patch
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File kvm-qemu-preXX-balloon-report-overflow.patch of Package kvm
This backported patch is loosely derrived from the following upstream patch: Beginning with its introduction, the virtio balloon has had an overflow error that causes 'info balloon' to misreport the actual memory size when the balloon itself becomes larger than 4G. Use a cast when converting dev->actual from pages to kB to prevent overflows. Before: (qemu) info balloon balloon: actual=5120 (qemu) balloon 1025 (qemu) info balloon balloon: actual=1025 (qemu) balloon 1024 (qemu) info balloon balloon: actual=5120 After: (qemu) info balloon balloon: actual=5120 (qemu) balloon 1025 (qemu) info balloon balloon: actual=1025 (qemu) balloon 1024 (qemu) info balloon balloon: actual=1024 Signed-off-by: Adam Litke <agl@us.ibm.com> --- Index: qemu-kvm-0.12.3/hw/virtio-balloon.c =================================================================== --- qemu-kvm-0.12.3.orig/hw/virtio-balloon.c +++ qemu-kvm-0.12.3/hw/virtio-balloon.c @@ -142,7 +142,7 @@ static ram_addr_t virtio_balloon_to_targ virtio_notify_config(&dev->vdev); } - return ram_size - (dev->actual << VIRTIO_BALLOON_PFN_SHIFT); + return ram_size - ((uint64_t)dev->actual << VIRTIO_BALLOON_PFN_SHIFT); } static void virtio_balloon_save(QEMUFile *f, void *opaque)
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