linux-kernel - Re: [PATCH v6 6/6] iommufd/selftest: Add coverage for IOMMU_HWPT

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Date:   Mon, 11 Dec 2023 19:28:42 +0800
From:   Yi Liu <yi.l.liu@...el.com>
To:     Jason Gunthorpe <jgg@...dia.com>
CC:     <joro@...tes.org>, <alex.williamson@...hat.com>,
        <kevin.tian@...el.com>, <robin.murphy@....com>,
        <baolu.lu@...ux.intel.com>, <cohuck@...hat.com>,
        <eric.auger@...hat.com>, <nicolinc@...dia.com>,
        <kvm@...r.kernel.org>, <mjrosato@...ux.ibm.com>,
        <chao.p.peng@...ux.intel.com>, <yi.y.sun@...ux.intel.com>,
        <peterx@...hat.com>, <jasowang@...hat.com>,
        <shameerali.kolothum.thodi@...wei.com>, <lulu@...hat.com>,
        <suravee.suthikulpanit@....com>, <iommu@...ts.linux.dev>,
        <linux-kernel@...r.kernel.org>, <linux-kselftest@...r.kernel.org>,
        <zhenzhong.duan@...el.com>, <joao.m.martins@...cle.com>,
        <xin.zeng@...el.com>, <yan.y.zhao@...el.com>
Subject: Re: [PATCH v6 6/6] iommufd/selftest: Add coverage for
 IOMMU_HWPT_INVALIDATE ioctl

On 2023/12/7 02:19, Jason Gunthorpe wrote:
> On Fri, Nov 17, 2023 at 05:07:17AM -0800, Yi Liu wrote:
>> From: Nicolin Chen <nicolinc@...dia.com>
>>
>> Add test cases for the IOMMU_HWPT_INVALIDATE ioctl and verify it by using
>> the new IOMMU_TEST_OP_MD_CHECK_IOTLB.
>>
>> Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
>> Signed-off-by: Yi Liu <yi.l.liu@...el.com>
>> ---
>>   tools/testing/selftests/iommu/iommufd.c       | 71 +++++++++++++++++++
>>   tools/testing/selftests/iommu/iommufd_utils.h | 39 ++++++++++
>>   2 files changed, 110 insertions(+)
>>
>> diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c
>> index c8763b880a16..2781d5bc6309 100644
>> --- a/tools/testing/selftests/iommu/iommufd.c
>> +++ b/tools/testing/selftests/iommu/iommufd.c
>> @@ -116,6 +116,7 @@ TEST_F(iommufd, cmd_length)
>>   	TEST_LENGTH(iommu_destroy, IOMMU_DESTROY, id);
>>   	TEST_LENGTH(iommu_hw_info, IOMMU_GET_HW_INFO, __reserved);
>>   	TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC, __reserved);
>> +	TEST_LENGTH(iommu_hwpt_invalidate, IOMMU_HWPT_INVALIDATE, out_driver_error_code);
>>   	TEST_LENGTH(iommu_ioas_alloc, IOMMU_IOAS_ALLOC, out_ioas_id);
>>   	TEST_LENGTH(iommu_ioas_iova_ranges, IOMMU_IOAS_IOVA_RANGES,
>>   		    out_iova_alignment);
>> @@ -271,7 +272,9 @@ TEST_F(iommufd_ioas, alloc_hwpt_nested)
>>   	struct iommu_hwpt_selftest data = {
>>   		.iotlb = IOMMU_TEST_IOTLB_DEFAULT,
>>   	};
>> +	struct iommu_hwpt_invalidate_selftest inv_reqs[2] = {0};
> 
> Don't use {0}

sure. I'll use memset then.

-- 
Regards,
Yi Liu