From: Wei Liu <wei.liu@kernel.org>
To: Easwar Hariharan <easwar.hariharan@linux.microsoft.com>
Cc: Emerson Busson <emersonbusson@gmail.com>,
mhklinux@outlook.com, kys@microsoft.com, haiyangz@microsoft.com,
wei.liu@kernel.org, decui@microsoft.com, andrew+netdev@lunn.ch,
davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
pabeni@redhat.com, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH v2 0/14] hv: vmbus: make rings and host-visible buffers survive buddy fragmentation
Date: Thu, 15 Oct 2026 00:14:02 -0700 [thread overview]
Message-ID: <20261015071402.GA936897@liuwe-devbox-debian-v2.local> (raw)
In-Reply-To: <28fe612a-e91b-4825-bb8c-f34c893c2dec@linux.microsoft.com>
On Thu, Oct 08, 2026 at 09:55:27AM -0700, Easwar Hariharan wrote:
> On 10/7/2026 12:07, Emerson Busson wrote:
> > This series moves VMBus ring backing to the chunk allocator and keeps the
> > allocation, GPADL ownership, and mapping references together. It preserves
> > the exported four-argument interfaces while allowing the private allocation
> > paths to carry ownership and sharing policy.
> >
> > A review of the original vzalloc fallback noted that CCA and TDX guests
> > without a paravisor need direct-map page transitions. This revision uses
> > contiguous chunks for buffers that must be host-shared, transitions each
> > page through page_address(), and combines the chunks with vmap(). Ordinary
> > guest-private buffers retain vzalloc-style allocation.
> >
>
> Can you provide a link to the v1 of this changeset and this "original vzalloc
> fallback" review? And a changelog and motivation for this series?
The title is
[PATCH 0/2] hv: vmbus: prevent control-plane starvation and order-7 ring deadlocks under memory pressure
Wei
next prev parent reply other threads:[~2026-10-15 7:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-07 19:07 [PATCH v2 0/14] hv: vmbus: make rings and host-visible buffers survive buddy fragmentation Emerson Busson
2026-10-07 19:07 ` [PATCH v2 01/14] hv: vmbus: convert ring backing through the chunk allocator Emerson Busson
2026-10-07 19:07 ` [PATCH v2 02/14] hv: vmbus: validate chunk buffer allocation and cleanup Emerson Busson
2026-10-08 21:17 ` kernel test robot
2026-10-07 19:07 ` [PATCH v2 03/14] uio: hv_generic: describe buffers for owned allocation Emerson Busson
2026-10-07 19:07 ` [PATCH v2 04/14] hv: vmbus: add KUnit tests for GPADL post failure injection Emerson Busson
2026-10-07 19:07 ` [PATCH v2 05/14] hv: vmbus: add KUnit test for order-zero allocation fallback Emerson Busson
2026-10-07 19:07 ` [PATCH v2 06/14] hv: vmbus: cover all shared-page policy combinations Emerson Busson
2026-10-07 19:07 ` [PATCH v2 07/14] hv: vmbus: distinguish host rescind from local channel unload Emerson Busson
2026-10-07 19:07 ` [PATCH v2 08/14] hv: vmbus: retain backing until ownership and references clear Emerson Busson
2026-10-07 19:07 ` [PATCH v2 09/14] hv: use owned VMBus buffers in NetVSC and UIO Emerson Busson
2026-10-07 19:07 ` [PATCH v2 10/14] hv: vmbus: pin buffer pages across UIO mmap to close the reclaim race Emerson Busson
2026-10-08 16:49 ` kernel test robot
2026-10-08 17:51 ` Nathan Chancellor
2026-10-08 17:02 ` kernel test robot
2026-10-07 19:07 ` [PATCH v2 11/14] hv: vmbus: vmalloc requestor metadata Emerson Busson
2026-10-07 19:07 ` [PATCH v2 12/14] hv: netvsc: allocate RNDIS request descriptors with kvzalloc_obj() Emerson Busson
2026-10-07 19:07 ` [PATCH v2 13/14] hv: netvsc: handle a NULL request address on empty completions Emerson Busson
2026-10-07 19:07 ` [PATCH v2 14/14] hv: netvsc: use kvzalloc for device state Emerson Busson
2026-10-08 16:55 ` [PATCH v2 0/14] hv: vmbus: make rings and host-visible buffers survive buddy fragmentation Easwar Hariharan
2026-10-15 7:14 ` Wei Liu [this message]
2026-10-13 17:52 ` Michael Kelley
2026-10-15 7:26 ` Wei Liu
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