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Re: [PATCH 04/13] HV: Mark vmbus ring buffer visible to host in Isolation VM
- To: Joerg Roedel <joro@xxxxxxxxxx>
- From: Tianyu Lan <ltykernel@xxxxxxxxx>
- Date: Mon, 2 Aug 2021 21:08:52 +0800
- Cc: kys@xxxxxxxxxxxxx, haiyangz@xxxxxxxxxxxxx, sthemmin@xxxxxxxxxxxxx, wei.liu@xxxxxxxxxx, decui@xxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, x86@xxxxxxxxxx, hpa@xxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, luto@xxxxxxxxxx, peterz@xxxxxxxxxxxxx, konrad.wilk@xxxxxxxxxx, boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, sstabellini@xxxxxxxxxx, will@xxxxxxxxxx, davem@xxxxxxxxxxxxx, kuba@xxxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, arnd@xxxxxxxx, hch@xxxxxx, m.szyprowski@xxxxxxxxxxx, robin.murphy@xxxxxxx, thomas.lendacky@xxxxxxx, brijesh.singh@xxxxxxx, ardb@xxxxxxxxxx, Tianyu.Lan@xxxxxxxxxxxxx, rientjes@xxxxxxxxxx, martin.b.radev@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, rppt@xxxxxxxxxx, kirill.shutemov@xxxxxxxxxxxxxxx, aneesh.kumar@xxxxxxxxxxxxx, krish.sadhukhan@xxxxxxxxxx, saravanand@xxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, pgonda@xxxxxxxxxx, david@xxxxxxxxxx, keescook@xxxxxxxxxxxx, hannes@xxxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, michael.h.kelley@xxxxxxxxxxxxx, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx, vkuznets@xxxxxxxxxx, anparri@xxxxxxxxxxxxx
- Delivery-date: Mon, 02 Aug 2021 13:09:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 8/2/2021 8:59 PM, Joerg Roedel wrote:
On Mon, Aug 02, 2021 at 08:56:29PM +0800, Tianyu Lan wrote:
Both second and third are HV_GPADL_RING type. One is send ring and the
other is receive ring. The driver keeps the order to allocate rx and
tx buffer. You are right this is not robust and will add a mutex to keep
the order.
Or you introduce fixed indexes for the RX and TX buffers?
The interface just allocates a buffer and driver will continue to
configure the buffer to be rx or tx after calling.
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