From: Mike Christie <michael.christie@oracle.com>
To: Jia Jia <physicalmtea@gmail.com>, mst@redhat.com, jasowangio@gmail.com
Cc: pbonzoni@redhat.com, stefanha@redhat.com, eperezma@redhat.com,
virtualization@lists.linux.dev, kvm@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH] vhost-scsi: flush backend after device ioctls
Date: Mon, 3 Aug 2026 19:02:43 -0500 [thread overview]
Message-ID: <45a33302-0b28-4d00-8724-c3af6e1783f6@oracle.com> (raw)
In-Reply-To: <20260723105451.1563439-1-physicalmtea@gmail.com>
On 7/23/26 5:54 AM, Jia Jia wrote:
> The owner must keep the old mappings valid until the ioctl returns.
> Remapping or dropping them from another userspace thread before then is
> outside the lifetime assumption of this transition barrier.
Ok I get it now. For some reason I thought that was valid.
For the patch we don't want to flush if vhost_dev_ioctl fails
and there's no reason to flush for operations like
VHOST_GET_FORK_FROM_OWNER or VHOST_SET_OWNER.
Could vhost_dev_ioctl return when a flush is needed?
next prev parent reply other threads:[~2026-08-04 0:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-21 7:36 [PATCH] vhost-scsi: flush backend after device ioctls Jia Jia
2026-07-22 17:17 ` Mike Christie
2026-07-23 10:54 ` Jia Jia
2026-08-04 0:02 ` Mike Christie [this message]
2026-08-04 3:39 ` Michael S. Tsirkin
2026-08-04 5:46 ` Jia Jia
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