From: Raphael Norwitz <raphael.norwitz@nutanix.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [PATCH v2 0/3] vhost-user: Lift Max Ram Slots Limitation
Date: Sun, 9 Feb 2020 12:14:42 -0500 [thread overview]
Message-ID: <20200209171442.GA14809@localhost.localdomain> (raw)
In-Reply-To: <20200206033248-mutt-send-email-mst@kernel.org>
On Thu, Feb 06, 2020 at 03:33:13AM -0500, Michael S. Tsirkin wrote:
>
> On Wed, Jan 15, 2020 at 09:57:03PM -0500, Raphael Norwitz wrote:
> >
> > Changes since V1:
> > * Kept the assert in vhost_user_set_mem_table_postcopy, but moved it
> > to prevent corruption
> > * Made QEMU send a single VHOST_USER_GET_MAX_MEMSLOTS message at
> > startup and cache the returned value so that QEMU does not need to
> > query the backend every time vhost_backend_memslots_limit is called.
>
> I'm a bit confused about what happens on reconnect.
> Can you clarify pls?
>
From what I can see, backends which support reconnect call vhost_dev_init,
which then calls vhost_user_backend_init(), as vhost-user-blk does here:
https://github.com/qemu/qemu/blob/master/hw/block/vhost-user-blk.c#L315. The
ram slots limit is fetched in vhost_user_backend_init() so every time the
device reconnects the limit should be refetched.
next prev parent reply other threads:[~2020-02-10 8:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-16 2:57 [PATCH v2 0/3] vhost-user: Lift Max Ram Slots Limitation Raphael Norwitz
2020-01-16 2:57 ` [PATCH v2 1/3] Fixed assert in vhost_user_set_mem_table_postcopy Raphael Norwitz
2020-02-06 8:17 ` Michael S. Tsirkin
2020-02-06 8:20 ` Michael S. Tsirkin
2020-02-09 17:17 ` Raphael Norwitz
2020-01-16 2:57 ` [PATCH v2 2/3] Refactor vhost_user_set_mem_table functions Raphael Norwitz
2020-02-06 8:21 ` Michael S. Tsirkin
2020-02-09 17:21 ` Raphael Norwitz
2020-01-16 2:57 ` [PATCH v2 3/3] Lift max memory slots limit imposed by vhost-user Raphael Norwitz
2020-02-06 8:32 ` Michael S. Tsirkin
2020-02-09 17:43 ` Raphael Norwitz
2020-02-20 7:03 ` Raphael Norwitz
2020-02-25 12:07 ` Michael S. Tsirkin
2020-01-31 21:21 ` [PATCH v2 0/3] vhost-user: Lift Max Ram Slots Limitation Raphael Norwitz
2020-02-06 8:33 ` Michael S. Tsirkin
2020-02-09 17:14 ` Raphael Norwitz [this message]
2020-02-10 16:04 ` Michael S. Tsirkin
2020-02-19 5:33 ` Raphael Norwitz
2020-02-19 10:08 ` Michael S. Tsirkin
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