Re: [PATCH v4 07/10] Change the negative test case to try pciback instead of vfio-pci

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On 11/20/2015 10:35 PM, Laine Stump wrote:
On 11/14/2015 03:37 AM, Shivaprasad G Bhat wrote:
The next few patches implement the vfio-pci tests. So,
change the test case to test the negative test case on
pciback instead.

Signed-off-by: Shivaprasad G Bhat <sbhat@xxxxxxxxxxxxxxxxxx>
---
  tests/virpcimock.c |    2 +-
  tests/virpcitest.c |    2 +-
  2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/virpcimock.c b/tests/virpcimock.c
index 0b49290..0724a36 100644
--- a/tests/virpcimock.c
+++ b/tests/virpcimock.c
@@ -815,7 +815,7 @@ init_env(void)
      MAKE_PCI_DRIVER("iwlwifi", 0x8086, 0x0044);
      MAKE_PCI_DRIVER("i915", 0x8086, 0x0046, 0x8086, 0x0047);
      MAKE_PCI_DRIVER("pci-stub", -1, -1);
-    pci_driver_new("vfio-pci", PCI_ACTION_BIND, -1, -1);
+    pci_driver_new("pciback", PCI_ACTION_BIND, -1, -1);

Is there a specific reason for making this the name of a stub driver that we support in the real driver, but not in the test driver? Or would the test be served just as well with some other random name?


I dont see why vfio-pci was chosen for negative test case earlier . I chose pciback because none of the existing test cases target this driver. So, felt safe to choose this driver for the negative test case. I think we can even choose a random test driver.

Thanks,
Shiva

Or, maybe we really do want it to be vfio-pci so that we will test failure paths when the driver is vfio-pci.

Either way, I'm not certain that changing this to "pciback" is the right thing. (not certain that it *isn't* either, which is why I Cc'ed jdenemar :-)

# define MAKE_PCI_DEVICE(Id, Vendor, Device, ...) \
      do { \
diff --git a/tests/virpcitest.c b/tests/virpcitest.c
index d4d3253..25591f9 100644
--- a/tests/virpcitest.c
+++ b/tests/virpcitest.c
@@ -269,7 +269,7 @@ testVirPCIDeviceDetachFail(const void *opaque)
      if (!dev)
          goto cleanup;
  -    if (virPCIDeviceSetStubDriver(dev, "vfio-pci") < 0)
+    if (virPCIDeviceSetStubDriver(dev, "pciback") < 0)
          goto cleanup;
        if (virPCIDeviceDetach(dev, NULL, NULL) < 0) {

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