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From: Stefan Hajnoczi <stefanha@redhat.com>
To: John Johnson <john.g.johnson@oracle.com>
Cc: Elena Ufimtseva <elena.ufimtseva@oracle.com>,
	Jag Raman <jag.raman@oracle.com>,
	"swapnil.ingle@nutanix.com" <swapnil.ingle@nutanix.com>,
	John Levon <john.levon@nutanix.com>,
	QEMU Devel Mailing List <qemu-devel@nongnu.org>,
	Alex Williamson <alex.williamson@redhat.com>
Subject: Re: [PATCH RFC 03/19] vfio-user: define VFIO Proxy and communication functions
Date: Thu, 29 Jul 2021 09:06:45 +0100	[thread overview]
Message-ID: <YQJhlZwTygy8FdqV@stefanha-x1.localdomain> (raw)
In-Reply-To: <090CD4E1-D3B1-46CB-AB05-158321095D74@oracle.com>

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On Wed, Jul 28, 2021 at 06:08:26PM +0000, John Johnson wrote:
> 
> 
> > On Jul 27, 2021, at 9:34 AM, Stefan Hajnoczi <stefanha@redhat.com> wrote:
> > 
> > On Sun, Jul 18, 2021 at 11:27:42PM -0700, Elena Ufimtseva wrote:
> >> From: John G Johnson <john.g.johnson@oracle.com>
> >> 
> >> Add user.c and user.h files for vfio-user with the basic
> >> send and receive functions.
> >> 
> >> Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
> >> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
> >> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
> >> ---
> >> hw/vfio/user.h                | 120 ++++++++++++++
> >> include/hw/vfio/vfio-common.h |   2 +
> >> hw/vfio/user.c                | 286 ++++++++++++++++++++++++++++++++++
> >> MAINTAINERS                   |   4 +
> >> hw/vfio/meson.build           |   1 +
> >> 5 files changed, 413 insertions(+)
> >> create mode 100644 hw/vfio/user.h
> >> create mode 100644 hw/vfio/user.c
> > 
> > The multi-threading, coroutine, and blocking I/O requirements of
> > vfio_user_recv() and vfio_user_send_reply() are unclear to me. Please
> > document them so it's clear what environment they can be called from. I
> > guess they are not called from coroutines and proxy->ioc is a blocking
> > IOChannel?
> > 
> 
> 	Yes to both, moreover, a block comment above vfio_user_recv() would
> be useful.  The call to setup vfio_user_recv() as the socket handler isn’t
> in this patch, do you want the series re-org’d?

That would help with review, thanks!

Stefan

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  reply	other threads:[~2021-07-29  8:07 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-19  6:27 [PATCH RFC 00/19] vfio-user implementation Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 01/19] vfio-user: introduce vfio-user protocol specification Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 02/19] vfio-user: add VFIO base abstract class Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 03/19] vfio-user: define VFIO Proxy and communication functions Elena Ufimtseva
2021-07-27 16:34   ` Stefan Hajnoczi
2021-07-28 18:08     ` John Johnson
2021-07-29  8:06       ` Stefan Hajnoczi [this message]
2021-07-19  6:27 ` [PATCH RFC 04/19] vfio-user: Define type vfio_user_pci_dev_info Elena Ufimtseva
2021-07-28 10:16   ` Stefan Hajnoczi
2021-07-29  0:55     ` John Johnson
2021-07-29  8:22       ` Stefan Hajnoczi
2021-07-19  6:27 ` [PATCH RFC 05/19] vfio-user: connect vfio proxy to remote server Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 06/19] vfio-user: negotiate protocol with " Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 07/19] vfio-user: define vfio-user pci ops Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 08/19] vfio-user: VFIO container setup & teardown Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 09/19] vfio-user: get device info and get irq info Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 10/19] vfio-user: device region read/write Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 11/19] vfio-user: get region and DMA map/unmap operations Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 12/19] vfio-user: probe remote device's BARs Elena Ufimtseva
2021-07-19 22:59   ` Alex Williamson
2021-07-20  1:39     ` John Johnson
2021-07-20  3:01       ` Alex Williamson
2021-07-19  6:27 ` [PATCH RFC 13/19] vfio-user: respond to remote DMA read/write requests Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 14/19] vfio_user: setup MSI/X interrupts and PCI config operations Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 15/19] vfio-user: vfio user device realize Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 16/19] vfio-user: pci reset Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 17/19] vfio-user: probe remote device ROM BAR Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 18/19] vfio-user: migration support Elena Ufimtseva
2021-07-19  6:27 ` [PATCH RFC 19/19] vfio-user: add migration cli options and version negotiation Elena Ufimtseva
2021-07-19 20:00 ` [PATCH RFC server 00/11] vfio-user server in QEMU Jagannathan Raman
2021-07-19 20:00   ` [PATCH RFC server 01/11] vfio-user: build library Jagannathan Raman
2021-07-19 20:24     ` John Levon
2021-07-20 12:06       ` Jag Raman
2021-07-20 12:20         ` Marc-André Lureau
2021-07-20 13:09           ` John Levon
2021-07-19 20:00   ` [PATCH RFC server 02/11] vfio-user: define vfio-user object Jagannathan Raman
2021-07-19 20:00   ` [PATCH RFC server 03/11] vfio-user: instantiate vfio-user context Jagannathan Raman
2021-07-19 20:00   ` [PATCH RFC server 04/11] vfio-user: find and init PCI device Jagannathan Raman
2021-07-26 15:05     ` John Levon
2021-07-28 17:08       ` Jag Raman
2021-07-19 20:00   ` [PATCH RFC server 05/11] vfio-user: run vfio-user context Jagannathan Raman
2021-07-20 14:17     ` Thanos Makatos
2021-08-13 14:51       ` Jag Raman
2021-08-16 12:52         ` John Levon
2021-08-16 14:10           ` Jag Raman
2021-07-19 20:00   ` [PATCH RFC server 06/11] vfio-user: handle PCI config space accesses Jagannathan Raman
2021-07-26 15:10     ` John Levon
2021-07-19 20:00   ` [PATCH RFC server 07/11] vfio-user: handle DMA mappings Jagannathan Raman
2021-07-20 14:38     ` Thanos Makatos
2021-07-19 20:00   ` [PATCH RFC server 08/11] vfio-user: handle PCI BAR accesses Jagannathan Raman
2021-07-19 20:00   ` [PATCH RFC server 09/11] vfio-user: handle device interrupts Jagannathan Raman
2021-07-19 20:00   ` [PATCH RFC server 10/11] vfio-user: register handlers to facilitate migration Jagannathan Raman
2021-07-20 14:05     ` Thanos Makatos
2021-07-19 20:00   ` [PATCH RFC server 11/11] vfio-user: acceptance test Jagannathan Raman
2021-07-20 16:12     ` Thanos Makatos

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