Re: [Qemu-devel] [PATCH v6 2/7] tests: Add virtio device initialization

[Stefan Hajnoczi]

On Mon, Aug 25, 2014 at 10:36:08AM +0200, Marc Marí wrote:
> +static uint16_t qvirtio_pci_config_readw(QVirtioDevice *d, void *addr)
> +{
> +    QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> +    return qpci_io_readw(dev->pdev, addr);
> +}
> +
> +static uint32_t qvirtio_pci_config_readl(QVirtioDevice *d, void *addr)
> +{
> +    QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> +    return qpci_io_readl(dev->pdev, addr);
> +}
> +
> +static uint64_t qvirtio_pci_config_readq(QVirtioDevice *d, void *addr)
> +{
> +    QVirtioPCIDevice *dev = (QVirtioPCIDevice *)d;
> +    int i;
> +    union {
> +        uint8_t bytes[8];
> +        uint64_t u64;
> +    } quad;
> +
> +    for (i = 0; i < 8; ++i) {
> +        quad.bytes[i] = qpci_io_readb(dev->pdev, addr + i);
> +    }
> +
> +    return quad.u64;
> +}

readw and readl are in host CPU endianness.

readq is in guest CPU endianness.

Please use qtest readq so that endianness is consistent.

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