Provide an introduction to the main components of a CXL system,
with detailed explanation of memory interleaving, example command
lines and kernel configuration.
This was a challenging document to write due to the need to extract
only that subset of CXL information which is relevant to either
users of QEMU emulation of CXL or to those interested in the
implementation. Much of CXL is concerned with specific elements of
the protocol, management of memory pooling etc which is simply
not relevant to what is currently planned for CXL emulation
in QEMU. All comments welcome
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20220429144110.25167-43-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Message-id: 20220402204523.32643-1-pisa@cmp.felk.cvut.cz
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/527
Signed-off-by: Lucas Ramage <lucas.ramage@infinite-omicron.com>
Message-id: 20220105205628.5491-1-oxr463@gmx.us
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: Move to docs/system/devices/ rather than top-level;
fix a pre-existing typo in passing]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Message-Id: <20211117210702.1393570-1-sw@weilnetz.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[thuth: "what's" --> "what is" as suggested by philmd]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Change namespaces to be shared namespaces by default (parameter
shared=on). Keep shared=off for older machine types.
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Add description and example for the vhost-user based RNG implementation.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Message-Id: <20211012205904.4106769-4-mathieu.poirier@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fold the usb2.txt information on device passthrough into usb.rst;
since this is the last part of the .txt file we can delete it now.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210728141457.14825-5-peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Fold the usb2.txt documentation about specifying which physical
port a USB device should use into usb.rst.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210728141457.14825-4-peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Fold the information in docs/usb2.txt about the different
kinds of supported USB controller into the main rST manual.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210728141457.14825-3-peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
We already have a section on USB in the rST manual; fold
the information in docs/usb-storage.txt into it.
We add 'format=raw' to the various -drive options in the code
examples, because QEMU will print warnings these days if you
omit it.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210728141457.14825-2-peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
While we do mention some of this stuff in the various daemons and
manuals the subtleties of the socket and memory sharing are sometimes
missed. This document attempts to give some background on vhost-user
daemons in general terms.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210720232703.10650-4-alex.bennee@linaro.org>
While we are at it add a brief preamble that explains some of the
common concepts in QEMU's device emulation which will hopefully lead
to less confusing about our dizzying command line options.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20210720232703.10650-3-alex.bennee@linaro.org>
Jonathan Cameron
Lucas Ramage
Pavel Pisa
Stefan Weil
Klaus Jensen
Mathieu Poirier
Peter Maydell
Alex Bennée