2016-10-14 20:40+0800, Peter Xu:
> DMAR test is based on QEMU edu device. A 4B DMA memory copy is carried
> out as the simplest DMAR test.
>
> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
> ---
[The code made me realize that I won't be able to do a proper review
right now ...]
> int main(int argc, char *argv[])
> {
> + int ret;
> + pci_edu_dev_t dev;
> +
> setup_vm();
> smp_init();
> setup_idt();
> @@ -37,5 +76,18 @@ int main(int argc, char *argv[])
> vtd_enable_ir();
> report("IR enablement", vtd_status() & VTD_GCMD_IR);
>
> + report("DMAR support 39 bits address width",
> + vtd_cap() & VTD_CAP_SAGAW);
> +
> + report("DMAR support huge pages", vtd_cap() & VTD_CAP_SLLPS);
> +
> + ret = edu_init(&dev);
> + if (ret) {
> + printf("Please specify \"-device edu\" to test IOMMU.\n");
> + return -1;
The test did something before this point, so we should print a summary
before exiting. Probably the best thing would be to report_skip() the
following tests, because the device needed for them couldn't be found.
> + }
> +
> + vtd_test_dmar(&dev);
> +
> return report_summary();
> }
> --
> 2.7.4
>
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