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From: Kirti Wankhede <kwankhede@nvidia.com>
To: Cornelia Huck <cohuck@redhat.com>
Cc: kevin.tian@intel.com, yi.l.liu@intel.com, cjia@nvidia.com,
	kvm@vger.kernel.org, eskultet@redhat.com, ziye.yang@intel.com,
	qemu-devel@nongnu.org, Zhengxiao.zx@Alibaba-inc.com,
	shuangtai.tst@alibaba-inc.com, dgilbert@redhat.com,
	zhi.a.wang@intel.com, mlevitsk@redhat.com, pasic@linux.ibm.com,
	aik@ozlabs.ru, alex.williamson@redhat.com, eauger@redhat.com,
	felipe@nutanix.com, jonathan.davies@nutanix.com,
	yan.y.zhao@intel.com, changpeng.liu@intel.com, Ken.Xue@amd.com
Subject: Re: [PATCH v16 Kernel 2/7] vfio iommu: Remove atomicity of ref_count of pinned pages
Date: Fri, 27 Mar 2020 03:15:41 +0530
Message-ID: <257a0b2e-129d-f606-99b8-09a24dc9f648@nvidia.com> (raw)
In-Reply-To: <20200326114935.4e729fba.cohuck@redhat.com>



On 3/26/2020 4:19 PM, Cornelia Huck wrote:
> On Wed, 25 Mar 2020 01:02:34 +0530
> Kirti Wankhede <kwankhede@nvidia.com> wrote:
> 
>> vfio_pfn.ref_count is always updated by holding iommu->lock, using atomic
> 
> s/by/while/
> 

Ok.

>> variable is overkill.
>>
>> Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
>> Reviewed-by: Neo Jia <cjia@nvidia.com>
>> Reviewed-by: Eric Auger <eric.auger@redhat.com>
>> ---
>>   drivers/vfio/vfio_iommu_type1.c | 9 +++++----
>>   1 file changed, 5 insertions(+), 4 deletions(-)
>>
> 
> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
> 

Thanks,
Kirti


  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-24 19:32 [PATCH v16 Kernel 0/7] KABIs to support migration for VFIO devices Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 1/7] vfio: KABI for migration interface for device state Kirti Wankhede
2020-03-26 10:41   ` Cornelia Huck
2020-03-26 21:39     ` Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 2/7] vfio iommu: Remove atomicity of ref_count of pinned pages Kirti Wankhede
2020-03-26 10:49   ` Cornelia Huck
2020-03-26 21:45     ` Kirti Wankhede [this message]
2020-03-24 19:32 ` [PATCH v16 Kernel 3/7] vfio iommu: Add ioctl definition for dirty pages tracking Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 4/7] vfio iommu: Implementation of ioctl " Kirti Wankhede
2020-03-24 20:37   ` Alex Williamson
2020-03-24 20:45     ` Alex Williamson
2020-03-24 21:48       ` Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 5/7] vfio iommu: Update UNMAP_DMA ioctl to get dirty bitmap before unmap Kirti Wankhede
2020-03-25  2:18   ` Yan Zhao
2020-03-26 21:39     ` Kirti Wankhede
2020-03-27  0:04       ` Yan Zhao
2020-03-27  4:42         ` Kirti Wankhede
2020-03-30  2:15           ` Yan Zhao
2020-04-01 18:04             ` Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 6/7] vfio iommu: Adds flag to indicate dirty pages tracking capability support Kirti Wankhede
2020-03-24 19:32 ` [PATCH v16 Kernel 7/7] vfio: Selective dirty page tracking if IOMMU backed device pins pages Kirti Wankhede

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