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From: Christoph Hellwig <hch@lst.de>
To: Tianyu Lan <ltykernel@gmail.com>
Cc: thomas.lendacky@amd.com, Tianyu Lan <Tianyu.Lan@microsoft.com>,
	konrad.wilk@oracle.com, sunilmut@microsoft.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	brijesh.singh@amd.com, vkuznets@redhat.com, robin.murphy@arm.com,
	hch@lst.de
Subject: Re: [RFC V2 PATCH 9/12] swiotlb: Add bounce buffer remap address setting function
Date: Wed, 14 Apr 2021 08:43:58 +0200	[thread overview]
Message-ID: <20210414064358.GA25877@lst.de> (raw)
In-Reply-To: <20210413152217.3386288-10-ltykernel@gmail.com>

On Tue, Apr 13, 2021 at 11:22:14AM -0400, Tianyu Lan wrote:
> From: Tianyu Lan <Tianyu.Lan@microsoft.com>
> 
> For Hyper-V isolation VM with AMD SEV SNP, the bounce buffer(shared memory)
> needs to be accessed via extra address space(e.g address above bit39).
> Hyper-V code may remap extra address space outside of swiotlb. swiotlb_bounce()
> needs to use remap virtual address to copy data from/to bounce buffer. Add
> new interface swiotlb_set_bounce_remap() to do that.

I have no way to review what this actually doing when you only Cc me
on a single patch.  Please make sure everyone is Cced on the whole
series to enable proper review.
_______________________________________________
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iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Tianyu Lan <ltykernel@gmail.com>
Cc: konrad.wilk@oracle.com, hch@lst.de, m.szyprowski@samsung.com,
	robin.murphy@arm.com, Tianyu Lan <Tianyu.Lan@microsoft.com>,
	iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	vkuznets@redhat.com, thomas.lendacky@amd.com,
	brijesh.singh@amd.com, sunilmut@microsoft.com
Subject: Re: [RFC V2 PATCH 9/12] swiotlb: Add bounce buffer remap address setting function
Date: Wed, 14 Apr 2021 08:43:58 +0200	[thread overview]
Message-ID: <20210414064358.GA25877@lst.de> (raw)
In-Reply-To: <20210413152217.3386288-10-ltykernel@gmail.com>

On Tue, Apr 13, 2021 at 11:22:14AM -0400, Tianyu Lan wrote:
> From: Tianyu Lan <Tianyu.Lan@microsoft.com>
> 
> For Hyper-V isolation VM with AMD SEV SNP, the bounce buffer(shared memory)
> needs to be accessed via extra address space(e.g address above bit39).
> Hyper-V code may remap extra address space outside of swiotlb. swiotlb_bounce()
> needs to use remap virtual address to copy data from/to bounce buffer. Add
> new interface swiotlb_set_bounce_remap() to do that.

I have no way to review what this actually doing when you only Cc me
on a single patch.  Please make sure everyone is Cced on the whole
series to enable proper review.

  reply	other threads:[~2021-04-14  6:44 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13 15:22 [RFC V2 PATCH 00/12] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-04-13 15:22 ` Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 1/12] x86/HV: Initialize GHCB page in Isolation VM Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 2/12] x86/HV: Initialize shared memory boundary " Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 3/12] x86/Hyper-V: Add new hvcall guest address host visibility support Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 4/12] HV: Add Write/Read MSR registers via ghcb Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 5/12] HV: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 6/12] HV/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 7/12] HV/Vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 8/12] UIO/Hyper-V: Not load UIO HV driver in the isolation VM Tianyu Lan
2021-04-13 15:59   ` Greg KH
2021-04-13 16:00   ` Greg KH
2021-04-14 15:20     ` Tianyu Lan
2021-04-14 15:36       ` Greg KH
2021-04-13 15:22 ` [RFC V2 PATCH 9/12] swiotlb: Add bounce buffer remap address setting function Tianyu Lan
2021-04-13 15:22   ` Tianyu Lan
2021-04-14  6:43   ` Christoph Hellwig [this message]
2021-04-14  6:43     ` Christoph Hellwig
2021-04-14 14:12     ` Tianyu Lan
2021-04-14 14:12       ` Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 10/12] HV/IOMMU: Add Hyper-V dma ops support Tianyu Lan
2021-04-13 15:22   ` Tianyu Lan
2021-04-13 15:22 ` [RFC V2 PATCH 11/12] HV/Netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-04-18  9:53   ` Leon Romanovsky
2021-04-13 15:22 ` [RFC V2 PATCH 12/12] HV/Storvsc: Add Isolation VM support for storvsc driver Tianyu Lan

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