linux-kernel - Re: [PATCH v8 06/10] iommufd/selftest: Add coverage for IOMMU_HWPT

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Message-ID: <eb560b8d-e7e1-4af8-a585-78e50352c8f0@intel.com>
Date: Thu, 28 Dec 2023 16:32:40 +0800
From: Yi Liu <yi.l.liu@...el.com>
To: "Tian, Kevin" <kevin.tian@...el.com>, "joro@...tes.org" <joro@...tes.org>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>, "jgg@...dia.com"
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	"baolu.lu@...ux.intel.com" <baolu.lu@...ux.intel.com>
CC: "cohuck@...hat.com" <cohuck@...hat.com>, "eric.auger@...hat.com"
	<eric.auger@...hat.com>, "nicolinc@...dia.com" <nicolinc@...dia.com>,
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	"linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>, "Duan,
 Zhenzhong" <zhenzhong.duan@...el.com>, "joao.m.martins@...cle.com"
	<joao.m.martins@...cle.com>, "Zeng, Xin" <xin.zeng@...el.com>, "Zhao, Yan Y"
	<yan.y.zhao@...el.com>, "j.granados@...sung.com" <j.granados@...sung.com>
Subject: Re: [PATCH v8 06/10] iommufd/selftest: Add coverage for
 IOMMU_HWPT_INVALIDATE ioctl

On 2023/12/28 14:14, Tian, Kevin wrote:
>> From: Liu, Yi L <yi.l.liu@...el.com>
>> Sent: Thursday, December 28, 2023 12:14 AM
>>
>> +		/* Negative test: trigger error */
>> +		num_inv = 1;
>> +		inv_reqs[0].flags =
>> IOMMU_TEST_INVALIDATE_FLAG_TRIGGER_ERROR;
>> +		inv_reqs[0].iotlb_id = 0;
>> +		test_cmd_hwpt_invalidate(nested_hwpt_id[0], inv_reqs,
>> +
>> IOMMU_HWPT_INVALIDATE_DATA_SELFTEST,
>> +					 sizeof(*inv_reqs), &num_inv);
>> +		assert(num_inv == 1);
>> +		assert(inv_reqs[0].hw_error ==
>> IOMMU_TEST_INVALIDATE_FAKE_ERROR);
>> +
> 
> instead of removing TRIGGER_ERROR|ALL err check, it makes more
> sense to keep it but making it a similar case as above.

yeah, but the config of TRIGGER_ERROR|ALL would be valid. is it?
Your point is to add another test case to see if "error" is generated
even if there is other flags set. is it?

-- 
Regards,
Yi Liu