From: Christoph Hellwig <hch@lst•de>
To: Tianyu Lan <ltykernel@gmail•com>
Cc: Christoph Hellwig <hch@lst•de>,
kys@microsoft•com, haiyangz@microsoft•com,
sthemmin@microsoft•com, wei.liu@kernel•org, decui@microsoft•com,
catalin.marinas@arm•com, will@kernel•org, tglx@linutronix•de,
mingo@redhat•com, bp@alien8•de, x86@kernel•org, hpa@zytor•com,
dave.hansen@linux•intel.com, luto@kernel•org,
peterz@infradead•org, konrad.wilk@oracle•com,
boris.ostrovsky@oracle•com, jgross@suse•com,
sstabellini@kernel•org, joro@8bytes•org, davem@davemloft•net,
kuba@kernel•org, jejb@linux•ibm.com, martin.petersen@oracle•com,
gregkh@linuxfoundation•org, arnd@arndb•de,
m.szyprowski@samsung•com, robin.murphy@arm•com,
brijesh.singh@amd•com, thomas.lendacky@amd•com,
Tianyu.Lan@microsoft•com, pgonda@google•com,
martin.b.radev@gmail•com, akpm@linux-foundation•org,
kirill.shutemov@linux•intel.com, rppt@kernel•org,
hannes@cmpxchg•org, aneesh.kumar@linux•ibm.com,
krish.sadhukhan@oracle•com, saravanand@fb•com,
linux-arm-kernel@lists•infradead.org,
xen-devel@lists•xenproject.org, rientjes@google•com,
ardb@kernel•org, michael.h.kelley@microsoft•com,
iommu@lists•linux-foundation.org, linux-arch@vger•kernel.org,
linux-hyperv@vger•kernel.org, linux-kernel@vger•kernel.org,
linux-scsi@vger•kernel.org, netdev@vger•kernel.org,
vkuznets@redhat•com, parri.andrea@gmail•com,
dave.hansen@intel•com
Subject: Re: [PATCH V4 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support
Date: Thu, 2 Sep 2021 09:51:31 +0200 [thread overview]
Message-ID: <20210902075131.GA14986@lst.de> (raw)
In-Reply-To: <91b5e997-8d44-77f0-6519-f574b541ba9f@gmail.com>
On Tue, Aug 31, 2021 at 11:20:06PM +0800, Tianyu Lan wrote:
>> If so I suspect the best way to allocate them is by not using vmalloc
>> but just discontiguous pages, and then use kmap_local_pfn where the
>> PFN includes the share_gpa offset when actually copying from/to the
>> skbs.
>>
> When netvsc needs to copy packet data to send buffer, it needs to caculate
> position with section_index and send_section_size.
> Please seee netvsc_copy_to_send_buf() detail. So the contiguous virtual
> address of send buffer is necessary to copy data and batch packets.
Actually that makes the kmap approach much easier. The phys_to_virt
can just be replaced with a kmap_local_pfn and the unmap needs to
be added. I've been mostly focussing on the receive path, which
would need a similar treatment.
next prev parent reply other threads:[~2021-09-02 7:51 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 17:20 [PATCH V4 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Tianyu Lan
2021-08-27 17:20 ` [PATCH V4 01/13] x86/hyperv: Initialize GHCB page in Isolation VM Tianyu Lan
2021-09-02 0:15 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 02/13] x86/hyperv: Initialize shared memory boundary in the " Tianyu Lan
2021-09-02 0:15 ` Michael Kelley
2021-09-02 6:35 ` Tianyu Lan
2021-08-27 17:21 ` [PATCH V4 03/13] x86/hyperv: Add new hvcall guest address host visibility support Tianyu Lan
2021-09-02 0:16 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 04/13] hyperv: Mark vmbus ring buffer visible to host in Isolation VM Tianyu Lan
2021-08-27 17:41 ` Greg KH
2021-08-27 17:44 ` Tianyu Lan
2021-09-02 0:17 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 05/13] hyperv: Add Write/Read MSR registers via ghcb page Tianyu Lan
2021-08-27 17:41 ` Greg KH
2021-08-27 17:46 ` Tianyu Lan
2021-09-02 3:32 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 06/13] hyperv: Add ghcb hvcall support for SNP VM Tianyu Lan
2021-09-02 0:20 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 07/13] hyperv/Vmbus: Add SNP support for VMbus channel initiate message Tianyu Lan
2021-09-02 0:21 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 08/13] hyperv/vmbus: Initialize VMbus ring buffer for Isolation VM Tianyu Lan
2021-09-02 0:23 ` Michael Kelley
2021-09-02 13:35 ` Tianyu Lan
2021-09-02 16:14 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 09/13] DMA: Add dma_map_decrypted/dma_unmap_encrypted() function Tianyu Lan
2021-08-27 17:21 ` [PATCH V4 10/13] x86/Swiotlb: Add Swiotlb bounce buffer remap function for HV IVM Tianyu Lan
2021-08-27 17:21 ` [PATCH V4 11/13] hyperv/IOMMU: Enable swiotlb bounce buffer for Isolation VM Tianyu Lan
2021-09-02 1:27 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 12/13] hv_netvsc: Add Isolation VM support for netvsc driver Tianyu Lan
2021-09-02 2:34 ` Michael Kelley
2021-09-02 4:56 ` Michael Kelley
2021-08-27 17:21 ` [PATCH V4 13/13] hv_storvsc: Add Isolation VM support for storvsc driver Tianyu Lan
2021-09-02 2:08 ` Michael Kelley
2021-08-30 12:00 ` [PATCH V4 00/13] x86/Hyper-V: Add Hyper-V Isolation VM support Christoph Hellwig
2021-08-31 15:20 ` Tianyu Lan
2021-09-02 7:51 ` Christoph Hellwig [this message]
2021-08-31 17:16 ` Michael Kelley
2021-09-02 7:59 ` Christoph Hellwig
2021-09-02 11:21 ` Tianyu Lan
2021-09-02 15:57 ` Michael Kelley
2021-09-14 14:41 ` Tianyu Lan
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