Commit Graph

56643 Commits

Author SHA1 Message Date
David Hildenbrand
040078e06d MAINTAINERS: use KVM s390x maintainers for kvm-stubs.c and kvm_s390x.h
Forgot it when factoring code out into these files. This is 100% s390x
KVM material.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170928134609.16985-2-david@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Halil Pasic
17ec9921a7 s390x/3270: handle writes of arbitrary length
The problem is, that the current implementation places unrealistic and
arbitrary constraints on the length of writes to the device (that is the
outbound requests), by asserting ccw.count being such that that even the
worst case escaped payload will fit an  more or less arbitrary sized
buffer. Actually on protocol level there is nothing to justify such
a limitation.

Another strange thing is the return value which more or less reflects
the size (written) after escaping instead of before escaping. This
is strange, because this return value is used to calculate SCSW.count.

Let us teach 3270 how to deal with arbitrary long writes.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reported-by: Jason J . Herne <jjherne@linux.vnet.ibm.com>
Tested-by: Jason J . Herne <jjherne@linux.vnet.ibm.com>
Message-Id: <20170920172314.102710-3-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Halil Pasic
1baa2eb01e s390x/3270: IDA support for 3270 via CcwDataStream
Let us convert the 3270 code so it uses the recently introduced
CcwDataStream abstraction instead of blindly assuming direct data access.

This patch does not change behavior beyond introducing IDA support: for
direct data access CCWs everything stays as-is. (If there are bugs, they
are also preserved).

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170920172314.102710-2-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Christian Borntraeger
c1843e2092 Revert "s390x/ccw: create s390 phb conditionally"
This reverts commit d32bd032d8.

Turns out that old QEMUs always created a pci host bridge
and for many CPU models the migration from old QEMUs to new
QEMUs will fail with
qemu-system-s390x: Unknown savevm section or instance 'PCIBUS' 0
qemu-system-s390x: load of migration failed: Invalid argument

As a quick fix we will revert the commit and always create the
pci host bridge.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
[fixed revert to keep the comment fixup, added a comment in the code]
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Message-Id: <20170928131831.81393-1-borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
8eb82de91b s390x/tcg: make idte/ipte use the new _real mmu
We don't wrap addresses in the mmu for the _real case, therefore the
behavior should be unchanged.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-7-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
e26131c904 s390x/tcg: make testblock use the new _real mmu
Low address protection checks will be moved into the mmu later.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-6-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
4ae433417e s390x/tcg: make stora(g) use the new _real mmu
As we properly handle the return address now, we can drop
potential_page_fault().

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-5-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
34499dadc1 s390x/tcg: make lura(g) use the new _real mmu.
Looks like, lurag was not loading 64bit but only 32bit.

As we properly handle the return address now, we can drop
potential_page_fault().

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-4-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
fb66944df9 s390x/tcg: add MMU for real addresses
This makes it easy to access real addresses (prefix) and in addition
checks for valid memory addresses, which is missing when using e.g.
stl_phys().

We can later reuse it to implement low address protection checks (then
we might even decide to introduce yet another MMU for absolute
addresses, just for handling storage keys and low address protection).

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-3-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
David Hildenbrand
0bd695a960 s390x/tcg: fix checking for invalid memory check
It should have been a >=, but let's directly perform a proper access
check to also be able to deal with hotplugged memory later.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-2-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Halil Pasic
93973f8f15 s390x/css: support ccw IDA
Let's add indirect data addressing support for our virtual channel
subsystem. This implementation does not bother with any kind of
prefetching. We simply step through the IDAL on demand.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20170921180841.24490-6-pasic@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Halil Pasic
62a2554ec2 390x/css: introduce maximum data address checking
The architecture mandates the addresses to be accessed on the first
indirection level (that is, the data addresses without IDA, and the
(M)IDAW addresses with (M)IDA) to be checked against an CCW format
dependent limit maximum address.  If a violation is detected, the storage
access is not to be performed and a channel program check needs to be
generated. As of today, we fail to do this check.

Let us stick even closer to the architecture specification.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20170921180841.24490-5-pasic@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
Halil Pasic
f57ba05823 virtio-ccw: use ccw data stream
Replace direct access which implicitly assumes no IDA
or MIDA with the new ccw data stream interface which should
cope with these transparently in the future.

Note that checking the return code for ccw_dstream_* will be
done in a follow-on patch.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170921180841.24490-4-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
Halil Pasic
0a22eac5aa s390x/css: use ccw data stream
Replace direct access which implicitly assumes no IDA
or MIDA with the new ccw data stream interface which should
cope with these transparently in the future.

Note that checking the return code for ccw_dstream_* will be
done in a follow-on patch.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Message-Id: <20170921180841.24490-3-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
Halil Pasic
57065a70d0 s390x/css: introduce css data stream
This is a preparation for introducing handling for indirect data
addressing and modified indirect data addressing (CCW). Here we introduce
an interface which should make the addressing scheme transparent for the
client code. Here we implement only the basic scheme (no IDA or MIDA).

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Message-Id: <20170921180841.24490-2-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
David Hildenbrand
947a38bd6f s390x/kvm: fix and cleanup storing CPU status
env->psa is a 64bit value, while we copy 4 bytes into the save area,
resulting always in 0 getting stored.

Let's try to reduce such errors by using a proper structure. While at
it, use correct cpu->be conversion (and get_psw_mask()), as we will be
reusing this code for TCG soon.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170922140338.6068-1-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
Igor Mammedov
b6805e127c s390x: use generic cpu_model parsing
Define default CPU type in generic way in machine class_init
and let common machine code handle cpu_model parsing.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <1505998749-269631-1-git-send-email-imammedo@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
David Hildenbrand
7705c75048 s390x/tcg: add basic MSA features
The STFLE bits for the MSA (extension) facilities simply indicate that
the respective instructions can be executed. The QUERY subfunction can then
be used to identify which features exactly are available.

Availability of subfunctions can also vary on real hardware. For now, we
simply implement a CPU model without any available subfunctions except
QUERY (which is always around).

As all MSA functions behave quite similarly, we can use one translation
handler for now. Prepare the code for implementation of actual subfunctions.

At least MSA is helpful for now, as older Linux kernels require this
facility when compiled for a z9 model. Allow to enable the facilities
for the qemu cpu model.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170920153016.3858-4-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
David Hildenbrand
7634d658e6 s390x/tcg: move wrap_address() to internal.h
We want to use it in another file.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170920153016.3858-3-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
David Hildenbrand
6b257354c4 s390x/tcg: implement spm (SET PROGRAM MASK)
Missing and is used inside Linux in the context of CPACF.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170920153016.3858-2-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:01 +02:00
Peter Maydell
d8f932cc69 -----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZ1kDRAAoJEJykq7OBq3PIVAQIALBBDDCIeYrQ0vin9JtwjKKv
 QjQmga16e5LLRj/94vwPTrPZJ5T9EapVnCSsif+DWb5+I+G8X52mLp4u9534jVAD
 xlfagcssPV85VyYti0uur9DLHS1lO6gpYD1KphDJ6uk2bVavyMmgB3ZhU0QkC2jZ
 HOc13oyOaGBLV5J6L1Vza9bnGV6LnNCo6ANzvc5ljPZ6jCYR2/s/v4wFeRYfGlU1
 JzqLO4YfpItDovMBXzeQy2aQpqMn2EbKar+pu4mKke9U4I/MnfYupql/089p1FlL
 NRyvGZZEgxuaDUIueoAI0dEo1xVtAIVFvThUoEzSXA2028+SNVSqhj8ytJm0yOE=
 =J+Rb
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Thu 05 Oct 2017 15:25:21 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
  checkpatch: fix incompatibility with old perl

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 16:54:29 +01:00
Peter Maydell
67caeeacd3 HMP pull 2017-10-05
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJZ1g5lAAoJEAUWMx68W/3nFY8P/3L3TtGeHkrKPmb6dKrjWuLc
 i4Hmy/T5sJ8S0xzuMbzk3MBjTc6grUxfZ5v2FfOEjuwx23zIRXrobgGnPiMVnFup
 vpJExl/UKl1YN1txKijk46XaY2S24qNr6WwHcvZlVw1tUyrIQYGN4WiLcqZDpIia
 SSHjm3DkMfg0UjVg/3Grf9zhQzXra5tjhofuehATJF1nIeDP1jVWhTXqY5krtkOT
 yMYh2zPCBrEwB7dvJocB9sKEsvf5WhmGGEZWvoqwChbN4pYgzIRdkn9yuKHUThmx
 cLLXSAe8jQYuwL8KRjFMIiaxYITkPn2yvisb45Ii/feMvqtXizkxEFOIUFzjvh6P
 ve9uzIGAezGZ4K5sQzRUcCfUJ2Ax7WXmCFTfs2rGtyk33F01/ng63KSZVW04tk2+
 /13U50eVKcP2pqFF1VN1/ySSsPosnNQe6sUq/moDQ8P0H0Y9cNeQ/b5YigJ5RzsB
 iufp5HzlGdJj/VLykARlRkw4hCxKBGA8kYCOam1cn+zu0iF2d6uNiJNBiuigPDiS
 BlEjNwuDbdFFyaMPino/ajKZ6PSe/iVZmZou4PNFDFaBEoo8rK4ld2TMVlFBedHE
 I0kPs4omz7MFZ8olhDBBD4NGjp1qcEzyzlcuz7pCnioShQ/yX/J28IQTYPSz0GKS
 N8jRs8WyPnpfv0M6UCmF
 =EAfk
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/dgilbert/tags/pull-hmp-20171005' into staging

HMP pull 2017-10-05

# gpg: Signature made Thu 05 Oct 2017 11:50:13 BST
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-hmp-20171005:
  hmp-commands-info: Change "@findex FOO" to "@findex info FOO"
  hmp-commands-info: Move Texinfo stanzas to conventional place
  hmp-commands-info: Fix "info rocker-FOO" misspellings
  hmp: Fix unknown command for subtable
  hmp: Missing handle_errors

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 16:13:46 +01:00
Peter Maydell
f43a46f0f4 usb bugfixes.
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJZ1fWPAAoJEEy22O7T6HE4Fx0QAJE/0lxQfDL4eYAK6qwUE+Ou
 1Un3R1u8Nru9bpwH6boxcalSAjdiAMddwtT0bB6AnRE26ACSdYSBs8Ej1Bb84Xst
 y/lC11+BK90OniCwvGpOQgd2M47ol5QZDxWSWUv2UUfhNWBO6JiQYD1AGqH4fqra
 RYwiDHlipGJrRqc4TIWUkgacnsXmImoqNgDmM7E1VC6i98WVgb5+7pm0Y2pJ6vwV
 UqpZ8iKsGOGiFOVhycWANVkkVuGnAsKcJr5Cu7MWwWUJOt9ztcqTr2poi/OZfMSg
 tt47WAZalGy9YrTRdsPpFvesdMO/x02ThwjTeyvCJRVsLlDnB19zgpgbq4NvcB5B
 MuzwVFSBHNXX2ARA1mbpZDlj5loHZ9mfQhAfv7M67O0uHyLbcCuNfR4S54rrfRH2
 niKf0T8tH/z2ZiXxpwJcnxLdEkZzsyNdRuPUw6MFt5+YOASiQ15cSNCpS5qO+n2c
 P9Ca0TMmr2S+0en9FWkkNMyVHfHAWxhD0uhD03w3i13q2hmLqRijXRq8D8fTliNN
 CtiHDyPiG+cFUDXt6cs3r8nraNTdjveZU8GcB47/8IplHwjQvNzbGIXCdz+9o/tq
 oFAefK3hzgK2sW3ak2bwUayJnXbat6+aSuFYMoHDGh5kyW347WXCirXXch2O2m43
 SxeGFf/WiHEl3jXwRlII
 =6BCg
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/kraxel/tags/usb-20171005-pull-request' into staging

usb bugfixes.

# gpg: Signature made Thu 05 Oct 2017 10:04:15 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20171005-pull-request:
  usb: fix host-stub.c build race
  usb: Use angle brackets for cacard include directive
  usb: fix libusb config variable name.
  hw/usb/bus: Remove bad object_unparent() from usb_try_create_simple()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 15:31:06 +01:00
Vladimir Sementsov-Ogievskiy
45042732f3 checkpatch: fix incompatibility with old perl
Do not use '/r' modifier which was introduced in perl 5.14.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Fixes: 3e5875afc0f ("checkpatch: check trace-events code style")
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Message-id: 20171004154420.34596-1-vsementsov@virtuozzo.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-10-05 10:22:44 -04:00
Peter Maydell
1fdc4c5d82 Merge qio 2017/10/04 v1
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABCAAGBQJZ1NKoAAoJEL6G67QVEE/fJ0oP/RMt6ZuCcAgR369Bp4tZRcp4
 Z58Dhr48pjWmSrXINxambx3I+W3OlHo+5x4JxDWa9+VeKlmSEiZqWkzEa1TsHi7h
 YLVjuTkGO9wDYU/CnLprwDTNtxZ7ppt9immPG+6MsnqSIGBeCAKCKs7gXK85EHzz
 pRbpb5MCf0duUjExQPYSrNGIT4KVjKEj1G9QAZM80tTg/I/FxxWc7OXV3fZtl3cY
 kblLCMc0kahnQAYLDzL9bjgrvx7D8u8xd0BZBTaNz7gZ0sh7f99ad0KCcFyVpLoG
 YSm/GbuvbrylX0h5HXKalo3RTantCE+JuGunT/KN4Q8ba0SvbVttROr+5EDbRy1y
 UIKfM5RtLpj6P72ySLBrcPE2WX/Kw7ItB5D2ayu+fO1TWhPa5S58k8XuMv5G72Ny
 hxcx6Wd/bD0SzdBfZHvd7gfc4VMSXo2XjjRbcHlPa1nRIluFzsHLFug82+MgNL6z
 D5Vw1pW+6QCq9bZK6wsuMRKP+BxISg4BfH8zsEe+CstovOKEgTMr3HxLSj6jCFPN
 Ta7t+JnIieTTrne/g/upecbbHDXjDPA2qavOBjcePR262T5OeCjVYiOgrEw2xomC
 xcTHg/kwAVgc9G85pORtEuZK5gCgD2dKdnODgaJKv4VZHk+I9wBUKOihUqBgA2WW
 iHenAJzXZcFRYKFQzyNr
 =/rNZ
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/berrange/tags/pull-qio-2017-10-04-1' into staging

Merge qio 2017/10/04 v1

# gpg: Signature made Wed 04 Oct 2017 13:23:04 BST
# gpg:                using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/pull-qio-2017-10-04-1:
  io: add trace events for websockets frame handling
  io: Attempt to send websocket close messages to client
  io: Reply to ping frames
  io: Ignore websocket PING and PONG frames
  io: Allow empty websocket payload
  io: Add support for fragmented websocket binary frames
  io: Small updates in preparation for websocket changes
  ui: Always remove an old VNC channel watch before adding a new one
  io: use case insensitive check for Connection & Upgrade websock headers
  io: include full error message in websocket handshake trace
  io: send proper HTTP response for websocket errors

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 14:44:12 +01:00
Peter Maydell
90586a78ff VFIO updates 2017-10-03
- NVIDIA GPUDirect Cliques experimental support (Alex Williamson)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJZ1AELAAoJECObm247sIsi4lsP/2s49kaWYdR4UilhMVJuVUkw
 09l374WBDtiLcyc5BMyb+A4gWfNUKzp9NWBkcYorGtaXJU9/dgm1k2iI7fEPT8EY
 sTcsE+QbsYW2umWL+6tIq5JXNMynpz6jFDNsJaFCTsp597N4QA0Yhnk3CaTUxwAm
 lxv0+8CxShERd79PFF9ODOfSeTapEMgc7upOVMfq57aOiuqOMSLfqB7nsPuYijn2
 sxMZAOp7NISlDFTg3d/hm1jx6HOmlOaWSFFrYk/9RI1JTuP8uKVH2LpyPwI25iDR
 TTvHbyKQk5dCsVqhnJaxqeTlQ7gbIjdXgY8cbEt+8ti5KXyV90hQsI3sM8qIv8Cl
 2iYAdDPOCmQCWJ+arEmefwJbnRgnO5cTh2kMDxw6yAKQYuLWEe8VeeMl1NBnz+TE
 Ne1VFMR6yQ1T0uV/RX1djTNImACxXi6eadN92Gg9gwhBLeSvmAq1MF9VP1OEa1qh
 nZSyDVG9EB1bMVkj7OOMbJ3WX9nokkNn9QN88R6s+4XJqif4eYVIiQhfbMfpFEM2
 oy4H7JgL7OysfBO1oirEGbnusZ/HhVbwVTjws63hpfSwiAEIfjbz3ht4Uz246Hy7
 V2FSEgffOTjJQ8J7e+yyw+qXxcpW59Hrp5hfjq8vJWFNJsum7sjDhK2MVlPQ5Jty
 m3WSOvHN19hUJ6Ai71IH
 =0HfI
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-updates-20171003.0' into staging

VFIO updates 2017-10-03

 - NVIDIA GPUDirect Cliques experimental support (Alex Williamson)

# gpg: Signature made Tue 03 Oct 2017 22:28:43 BST
# gpg:                using RSA key 0x239B9B6E3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg:                 aka "Alex Williamson <alex@shazbot.org>"
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>"
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>"
# Primary key fingerprint: 42F6 C04E 540B D1A9 9E7B  8A90 239B 9B6E 3BB0 8B22

* remotes/awilliam/tags/vfio-updates-20171003.0:
  vfio/pci: Add NVIDIA GPUDirect Cliques support
  vfio/pci: Add virtual capabilities quirk infrastructure
  vfio/pci: Do not unwind on error

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 13:28:43 +01:00
Peter Maydell
5456c6a4ec -----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZ09yuAAoJEJykq7OBq3PIMn4H/jHpYinygASL5pyQidfULpeP
 o81r03RMQOvOFNkdYHUCF5c7m37jdKVXJlikpbISTEIf4cEuy35Vs4VPob+Js5jb
 CsVmiv9C8Q+YQlQPngAfFi6UzX8smBc6GCGk4SuJZLaeAoLIlcPSvJF9ZUTTf0S5
 GFiSiQjXj97uAvWzcpy/YuEw6SM44880erNiV2LMG36PyzeP8F+Ce1NNn4VlsYtt
 0XVv4IWJZ9FlhK5v1mOTPOeaD8Pbkdju0YOc0AgqGTRzBD0goAIXA7e5ItTgHyvH
 nvUtB8TApJsT2Pvo/bYK4Iu/rkABqQaHf7Gjmg297WUSr+HJLWVhU/fMIP5R+i4=
 =Q86M
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

# gpg: Signature made Tue 03 Oct 2017 19:53:34 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  aio: fix assert when remove poll during destroy
  iothread: delay the context release to finalize
  iothread: export iothread_stop()
  iothread: provide helpers for internal use
  qom: provide root container for internal objs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-05 12:02:21 +01:00
Markus Armbruster
1b591700e6 hmp-commands-info: Change "@findex FOO" to "@findex info FOO"
qemu-doc has the monitor commands in the "Function Index".  The "info
FOO" are listed as "FOO" there.  List them as "info FOO" instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20171002134538.23332-4-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-10-05 10:08:39 +01:00
Markus Armbruster
a92725136c hmp-commands-info: Move Texinfo stanzas to conventional place
A command's STEXI..ETEXI stanza follows the command's initializer.
Two commands got them backwards.  Correct that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20171002134538.23332-3-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-10-05 10:06:05 +01:00
Markus Armbruster
c325ccd304 hmp-commands-info: Fix "info rocker-FOO" misspellings
Screwed up in commit da76ee7.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20171002134538.23332-2-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-10-05 10:05:13 +01:00
Gerd Hoffmann
eea6ae2037 usb: fix host-stub.c build race
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20171004125210.7817-1-kraxel@redhat.com
2017-10-05 11:03:25 +02:00
Dr. David Alan Gilbert
250b819764 hmp: Fix unknown command for subtable
(qemu) info foo
unknown command: 'foo'

fix this to:
(qemu) info foo
unknown command: 'info foo'

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170817104216.29150-3-dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-10-05 10:01:21 +01:00
Dr. David Alan Gilbert
40c71f6361 hmp: Missing handle_errors
hmp_info_memdev && hmp_info_memory_devices were missing
hmp_handle_error calls.  Add them.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170817104216.29150-2-dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-10-05 10:01:03 +01:00
Daniel P. Berrange
59f183bbd5 io: add trace events for websockets frame handling
It is useful to trace websockets frame encoding/decoding when debugging
problems.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
530ca60c16 io: Attempt to send websocket close messages to client
Make a best effort attempt to close websocket connections according to
the RFC. Sends the close message, as room permits in the socket buffer,
and immediately closes the socket.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
268a53f50d io: Reply to ping frames
Add an immediate ping reply (pong) to the outgoing stream when a ping
is received. Unsolicited pongs are ignored.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
01af17fc00 io: Ignore websocket PING and PONG frames
Keep pings and gratuitous pongs generated by web browsers from killing
websocket connections.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
3a29640e2c io: Allow empty websocket payload
Some browsers send pings/pongs with no payload, so allow empty payloads
instead of closing the connection.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
ff1300e626 io: Add support for fragmented websocket binary frames
Allows fragmented binary frames by saving the previous opcode. Handles
the case where an intermediary (i.e., web proxy) fragments frames
originally sent unfragmented by the client.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
eefa3d8ef6 io: Small updates in preparation for websocket changes
Gets rid of unnecessary bit shifting and performs proper EOF checking to
avoid a large number of repeated calls to recvmsg() when a client
abruptly terminates a connection (bug fix).

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Brandon Carpenter
a75d6f0761 ui: Always remove an old VNC channel watch before adding a new one
Also set saved handle to zero when removing without adding a new watch.

Signed-off-by: Brandon Carpenter <brandon.carpenter@cypherpath.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Daniel P. Berrange
33badfd1e3 io: use case insensitive check for Connection & Upgrade websock headers
When checking the value of the Connection and Upgrade HTTP headers
the websock RFC (6455) requires the comparison to be case insensitive.
The Connection value should be an exact match not a substring.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Daniel P. Berrange
3a3f870596 io: include full error message in websocket handshake trace
When the websocket handshake fails it is useful to log the real
error message via the trace points for debugging purposes.

Fixes bug: #1715186

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Daniel P. Berrange
f69a8bde29 io: send proper HTTP response for websocket errors
When any error occurs while processing the websockets handshake,
QEMU just terminates the connection abruptly. This is in violation
of the HTTP specs and does not help the client understand what they
did wrong. This is particularly bad when the client gives the wrong
path, as a "404 Not Found" would be very helpful.

Refactor the handshake code so that it always sends a response to
the client unless there was an I/O error.

Fixes bug: #1715186

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2017-10-04 13:21:53 +01:00
Alex Williamson
dfbee78db8 vfio/pci: Add NVIDIA GPUDirect Cliques support
NVIDIA has defined a specification for creating GPUDirect "cliques",
where devices with the same clique ID support direct peer-to-peer DMA.
When running on bare-metal, tools like NVIDIA's p2pBandwidthLatencyTest
(part of cuda-samples) determine which GPUs can support peer-to-peer
based on chipset and topology.  When running in a VM, these tools have
no visibility to the physical hardware support or topology.  This
option allows the user to specify hints via a vendor defined
capability.  For instance:

  <qemu:commandline>
    <qemu:arg value='-set'/>
    <qemu:arg value='device.hostdev0.x-nv-gpudirect-clique=0'/>
    <qemu:arg value='-set'/>
    <qemu:arg value='device.hostdev1.x-nv-gpudirect-clique=1'/>
    <qemu:arg value='-set'/>
    <qemu:arg value='device.hostdev2.x-nv-gpudirect-clique=1'/>
  </qemu:commandline>

This enables two cliques.  The first is a singleton clique with ID 0,
for the first hostdev defined in the XML (note that since cliques
define peer-to-peer sets, singleton clique offer no benefit).  The
subsequent two hostdevs are both added to clique ID 1, indicating
peer-to-peer is possible between these devices.

QEMU only provides validation that the clique ID is valid and applied
to an NVIDIA graphics device, any validation that the resulting
cliques are functional and valid is the user's responsibility.  The
NVIDIA specification allows a 4-bit clique ID, thus valid values are
0-15.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-10-03 12:57:36 -06:00
Alex Williamson
e3f79f3bd4 vfio/pci: Add virtual capabilities quirk infrastructure
If the hypervisor needs to add purely virtual capabilties, give us a
hook through quirks to do that.  Note that we determine the maximum
size for a capability based on the physical device, if we insert a
virtual capability, that can change.  Therefore if maximum size is
smaller after added virt capabilities, use that.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-10-03 12:57:36 -06:00
Alex Williamson
5b31c8229d vfio/pci: Do not unwind on error
If vfio_add_std_cap() errors then going to out prepends irrelevant
errors for capabilities we haven't attempted to add as we unwind our
recursive stack.  Just return error.

Fixes: 7ef165b9a8 ("vfio/pci: Pass an error object to vfio_add_capabilities")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-10-03 12:57:35 -06:00
Stefan Hajnoczi
f708a5e71c aio: fix assert when remove poll during destroy
After iothread is enabled internally inside QEMU with GMainContext, we
may encounter this warning when destroying the iothread:

(qemu-system-x86_64:19925): GLib-CRITICAL **: g_source_remove_poll:
 assertion '!SOURCE_DESTROYED (source)' failed

The problem is that g_source_remove_poll() does not allow to remove one
source from array if the source is detached from its owner
context. (peterx: which IMHO does not make much sense)

Fix it on QEMU side by avoid calling g_source_remove_poll() if we know
the object is during destruction, and we won't leak anything after all
since the array will be gone soon cleanly even with that fd.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-6-peterx@redhat.com
[peterx: write the commit message]
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-10-03 14:36:19 -04:00
Peter Xu
5b3ac23fee iothread: delay the context release to finalize
When gcontext is used with iothread, the context will be destroyed
during iothread_stop().  That's not good since sometimes we would like
to keep the resources until iothread is destroyed, but we may want to
stop the thread before that point.

Delay the destruction of gcontext to iothread finalize.  Then we can do:

  iothread_stop(thread);
  some_cleanup_on_resources();
  iothread_destroy(thread);

We may need this patch if we want to run chardev IOs in iothreads and
hopefully clean them up correctly.  For more specific information,
please see 2b316774f6 ("qemu-char: do not operate on sources from
finalize callbacks").

Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-5-peterx@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-10-03 14:36:19 -04:00
Peter Xu
82d90705fe iothread: export iothread_stop()
So that internal iothread users can explicitly stop one iothread without
destroying it.

Since at it, fix iothread_stop() to allow it to be called multiple
times.  Before this patch we may call iothread_stop() more than once on
single iothread, while that may not be correct since qemu_thread_join()
is not allowed to run twice.  From manual of pthread_join():

  Joining with a thread that has previously been joined results in
  undefined behavior.

Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20170928025958.1420-4-peterx@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-10-03 14:36:16 -04:00