Commit Graph

166 Commits

Author SHA1 Message Date
Jan Kiszka
4b8523ee89 kvm: First step to push iothread lock out of inner run loop
This opens the path to get rid of the iothread lock on vmexits in KVM
mode. On x86, the in-kernel irqchips has to be used because we otherwise
need to synchronize APIC and other per-cpu state accesses that could be
changed concurrently.

Regarding pre/post-run callbacks, s390x and ARM should be fine without
specific locking as the callbacks are empty. MIPS and POWER require
locking for the pre-run callback.

For the handle_exit callback, it is non-empty in x86, POWER and s390.
Some POWER cases could do without the locking, but it is left in
place for now.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-7-git-send-email-pbonzini@redhat.com>
2015-07-01 15:45:51 +02:00
Markus Armbruster
a0b1a66ea3 Include monitor/monitor.h exactly where needed
In particular, don't include it into headers.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22 18:20:41 +02:00
Markus Armbruster
d49b683644 qerror: Move #include out of qerror.h
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22 18:20:40 +02:00
Xu Wang
8fc639af4b s390x/kvm: diag288 instruction interception and handling
Intercept the diag288 requests from kvm guests, and hand the
requested command to the diag288 watchdog device for further
handling.

Signed-off-by: Xu Wang <gesaint@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-11 17:45:49 +02:00
Peter Maydell
44ee94e486 s390x/virtio-ccw: migration and virtio for 2.4
1. Migration fixups
 2. virtio 9pfs
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJVdp0FAAoJEBF7vIC1phx8oZcP/RVDTZ8OOz+OkSqDQITTezmM
 yziWEjoWqFsGWBuwZp8eztQKdF/Jpx+YgE3XnFFFFFiH+HvsBhG8dJIHjKEPqP5W
 vdd2ZgO0VeXH8v5PW8TbZG6jUBjoNWjNGeFwxIunqbyViUXI98rwEIHj0ntXkPRR
 KhPuiPTpE4/cZOdGmC3qLC3m1nFVTTfnaXiVJGedcATkjJeDs5VbgstZd6YgXRkG
 HfUDJzkvD8FpdYW9/XBChfKPPWYvFa1wabGdrC/FJYmrcPuJUDWHpERsyAM8vF7F
 daAuYG2iF6EGv7H+XKJb4ZLnSkfHA3OCeGeMYApo/DIyWb3w6jwU0xjv2PVatSPa
 KMWOFq8um5pM9fV1+TQIbh2sFSq6aHcpG6r/vdt6cpbO2c9O3Xt/W8DgTNFMyBaC
 NUTs+8mKp165EzwbLZvAztcBE+2frHlXas+jFwLJm2S70pZTAw3uv4MbyLAePzd1
 2cn2zmDGxpmgwCrjSZA8mNq/DPVXtc1/ACFv6ymYItz5Cnrls+SRdOmbwwZZRyXo
 SNmUyQxQCm+C8J52pVMC7hGZYiegSJjZRJYsR9zpUKzB/Y8ghoFTDPSTw8llWtLD
 wxiAOxPTo8gql1IpCdpPSLQqyxOvgKIhxU5yRs1H2b3xov65amc3CyYAS+DdJQ2g
 XHTKOR31driw82O6glu9
 =s6YP
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150609' into staging

s390x/virtio-ccw: migration and virtio for 2.4

1. Migration fixups
2. virtio 9pfs

# gpg: Signature made Tue Jun  9 09:00:05 2015 BST using RSA key ID B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"

* remotes/borntraeger/tags/s390x-20150609:
  s390x/migration: add comment about floating point migration
  s390x/kvm: always ignore empty vcpu interrupt state
  virtio-ccw/migration: Migrate config vector for virtio devices
  virtio-ccw: add support for 9pfs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-09 11:07:41 +01:00
Sascha Silbe
b853d4cbf2 s390x/kvm: always ignore empty vcpu interrupt state
kvm_s390_vcpu_interrupt_pre_save() and
kvm_s390_vcpu_interrupt_post_load() are essentially no-ops on hosts
without KVM_CAP_S390_IRQ_STATE. Move the capability check after the
check for saved IRQ state in kvm_s390_vcpu_interrupt_post_load() so that
migration between hosts without KVM_CAP_S390_IRQ_STATE (including save /
restore on the same host) continues to work.

Fixes: 3cda44f7ba ("s390x/kvm: migrate vcpu interrupt state")
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-03 18:07:09 +02:00
Eric Auger
1850b6b7d0 kvm: introduce kvm_arch_msi_data_to_gsi
On ARM the MSI data corresponds to the shared peripheral interrupt (SPI)
ID. This latter equals to the SPI index + 32. to retrieve the SPI index,
matching the gsi, an architecture specific function is introduced.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-02 14:56:25 +01:00
Eric Farman
46ca6b3bc9 s390x: Enable vector processing capability
Everything is finally in place, inform the kernel that user space
supports vector registers.

Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27 17:52:04 +02:00
Eric Farman
abec53565d s390x: Store Additional Status SIGP order
Add handling for the Store Additional Status at Address order
that exists for the Signal Processor (SIGP) instruction.

Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27 17:52:03 +02:00
Eric Farman
fcb79802e0 s390x: Vector Register IOCTLs
Handle the actual syncing of the vector registers with kernel space,
via the get/put register IOCTLs.

The vector registers that were introduced with the z13 overlay
the existing floating point registers.  FP registers 0-15 are
the high-halves of vector registers 0-15.  Thus, remove the
freg fields and replace them with the equivalent vector field
to avoid errors in duplication.  Moreover, synchronize either the
vector registers via kvm_sync_regs, or floating point registers
via the GET/SET FPU IOCTLs.

Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27 17:52:03 +02:00
Eric Farman
c498d8e36e s390x: Common access to floating point registers
Provide a routine to access the correct floating point register,
to simplify future expansion.

Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27 17:52:03 +02:00
Peter Maydell
b951cda21d - build bugfix from Fam and new configure check from Emilio
- two improvements to "info mtere" from Gerd
 - KVM support for memory transaction attributes
 - one more small step towards unlocked MMIO dispatch
 - one piece of the qemu-nbd errno fixes
 - trivial-ish patches from Denis and Thomas
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQEcBAABCAAGBQJVTLBhAAoJEL/70l94x66DkGIH/jlNJBMBGhlH/lwb1LzxtAMX
 OxyDxsiwJpSxsOiZiY3oRz7d6VV6TCrmx5L+1HgG5IzU3WC61Tq6/FK4EXLepZIH
 GSYlLtAALWny+2Uwsyh1Z7MMr5yxyhgeORk/l7O8pncmMeysludbEaJqQg8Aa9A2
 j0B2pv4tvcl/qhuIFXL1YlbYMVXMsZy5W65D8jq+B6qf3q8kUcdKvgvbUMrxAiSH
 JMISo4Z32t9w8SGnhlBa9s4HfN2yOvULRAozzkDBAu4c41cZrw16lvTV8XotamnU
 LrG6eQ+2PFeIrcGhuIu7z5Bi4yiRRiThfRLCAvVApVTQYUf7IwvPNa5K1FrP9YU=
 =Z/UD
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

- build bugfix from Fam and new configure check from Emilio
- two improvements to "info mtere" from Gerd
- KVM support for memory transaction attributes
- one more small step towards unlocked MMIO dispatch
- one piece of the qemu-nbd errno fixes
- trivial-ish patches from Denis and Thomas

# gpg: Signature made Fri May  8 13:47:29 2015 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@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: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream:
  qemu-nbd: only send a limited number of errno codes on the wire
  rules.mak: Force CFLAGS for all objects in DSO
  configure: require __thread support
  exec: move rcu_read_lock/unlock to address_space_translate callers
  kvm: add support for memory transaction attributes
  mtree: also print disabled regions
  mtree: tag & indent a bit better
  apic_common: improve readability of apic_reset_common
  kvm: Silence warning from valgrind

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-11 12:01:09 +01:00
Jens Freimann
3cda44f7ba s390x/kvm: migrate vcpu interrupt state
This patch adds support to migrate vcpu interrupts.
We use ioctl KVM_S390_GET_IRQ_STATE and _SET_IRQ_STATE
to get/set the complete interrupt state for a vcpu.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-08 10:36:19 +02:00
Jens Freimann
1191c94963 s390x/kvm: use ioctl KVM_S390_IRQ for vcpu interrupts
KVM_S390_INT uses only two parameter fields. This is not
enough to pass all required information for certain interrupts.

A new ioctl KVM_S390_IRQ is available which allows us to
inject all local interrupts as defined in the Principles of
Operation. It takes a struct kvm_s390_irq as a parameter
which can store interrupt payload data for all interrupts.

Let's use the new ioctl for injecting vcpu interrupts.

Tested-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-08 10:36:19 +02:00
Paolo Bonzini
4c66375252 kvm: add support for memory transaction attributes
Let kvm_arch_post_run convert fields in the kvm_run struct to MemTxAttrs.
These are then passed to address_space_rw.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-04-30 16:55:32 +02:00
Alexander Yarygin
6cb1e49de5 s390x/kvm: Support access register mode for KVM_S390_MEM_OP ioctl
Access register mode is one of the modes that control dynamic address
translation. In this mode the address space is specified by values of
the access registers. The effective address-space-control element is
obtained from the result of the access register translation. See
the "Access-Register Introduction" section of the chapter 5 "Program
Execution" in "Principles of Operations" for more details.

When the CPU is in AR mode, the s390_cpu_virt_mem_rw() function must
know which access register number to use for address translation.
This patch does several things:
- add new parameter 'uint8_t ar' to that function
- decode ar number from intercepted instructions
- pass the ar number to s390_cpu_virt_mem_rw(), which in turn passes it
to the KVM_S390_MEM_OP ioctl.

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30 13:21:42 +02:00
Thomas Huth
a9bcd1b871 s390x/mmu: Use ioctl for reading and writing from/to guest memory
Add code to make use of the new ioctl for reading from / writing to
virtual guest memory. By using the ioctl, the memory accesses are now
protected with the so-called ipte-lock in the kernel.

[CH: moved error message into kvm_s390_mem_op()]
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30 13:21:42 +02:00
Ekaterina Tumanova
f07177a559 s390x/kvm: Put vm name, extended name and UUID into STSI322 SYSIB
KVM prefills the SYSIB, returned by STSI 3.2.2. This patch allows
userspace to intercept execution, and fill in the values, that are
known to qemu: machine name (8 chars), extended machine name (256
chars), extended machine name encoding (equals 2 for UTF-8) and UUID.

STSI322 qemu handler also finds a highest virtualization level in
level-3 virtualization stack that doesn't support Extended Names
(Ext Name delimiter) and propagates zero Ext Name to all levels below,
because this level is not capable of managing Extended Names of lower
levels.

Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30 13:21:42 +02:00
Tony Krowiak
2eb1cd0768 s390x: CPACF: Handle key wrap machine options
Check for the aes_key_wrap and dea_key_wrap machine options and set the
appropriate KVM device attribute(s) to tell the kernel to enable or disable
the AES/DEA protected key functions for the guest domain.

This patch introduces two new machine options for indicating the state of
AES/DEA key wrapping functions.  This controls whether the guest will
have access to the AES/DEA crypto functions.

aes_key_wrap="on | off" is changed to aes-key-wrap="on | off"
dea_key_wrap="on | off" is changed to dea-key-wrap="on | off"

Check for the aes-key-wrap and dea-key-wrap machine options and set the
appropriate KVM device attribute(s) to tell the kernel to enable or disable
the AES/DEA protected key functions for the guest domain.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1426164834-38648-4-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-16 10:20:11 +01:00
Dominik Dingel
2b147555f7 s390x/kvm: make use of generic vm attribute check
By using the new introduced generic interface we
can remove redundancies and clean up.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Suggested-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1426164834-38648-3-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-16 10:15:45 +01:00
Jason J. Herne
3f9e59bb53 s390x/kvm: Guest Migration TOD clock synchronization
Synchronizes the guest TOD clock across a migration by sending the guest TOD
clock value to the destination system. If the guest TOD clock is not preserved
across a migration then the guest's view of time will snap backwards if the
destination host clock is behind the source host clock. This will cause the
guest to hang immediately upon resuming on the destination system.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>

Message-Id: <1425912968-54387-1-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-16 10:15:44 +01:00
Peter Maydell
a195fdd028 misc fixes and cleanups
A bunch of fixes all over the place, some of the
 bugs fixed are actually regressions.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJVAH/uAAoJECgfDbjSjVRprq0H/iyqLSHQIv6gNOPYQbLXOCv0
 pkCeLx6kTMO9lSwxZcsZvMsYPeiEL3CHRKJcEjq0+Ap0uen0pa2Yl3WzyJcnBcib
 xwkHk/UftFYAiZAzVtd4moXujvVLYNL1ukvr/wPOdIkTEn8U6K3NaT3pLooc369f
 oTyQhlL3E9HJ5S6X0HXJIFwtsOIhPfS3NCLoDFbFjtb9mIsqTx7N5s2C5hctF+ir
 JtyuwPx5oT73WYxoYmjSP6n/Nf5cuJdqtm6o2KijjhWWYMJ6epYVBo/DD6dIFbmJ
 V/23dxpon+lvhae2c2LAVrkiJ1Boon/eMbJK/mNwpFX7vW35ataLPy6pYpaiEJs=
 =RUld
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

misc fixes and cleanups

A bunch of fixes all over the place, some of the
bugs fixed are actually regressions.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Wed Mar 11 17:48:30 2015 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (25 commits)
  virtio-scsi: remove empty wrapper for cmd
  virtio-scsi: clean out duplicate cdb field
  virtio-scsi: fix cdb/sense size
  uapi/virtio_scsi: allow overriding CDB/SENSE size
  virtio-scsi: drop duplicate CDB/SENSE SIZE
  exec: don't include hw/boards for linux-user
  acpi: specify format for build_append_namestring
  MAINTAINERS: drop aliguori@amazon.com
  tpm: Move memory subregion function into realize function
  virtio-pci: Convert to realize()
  pci: Convert pci_nic_init() to Error to avoid qdev_init()
  machine: query mem-merge machine property
  machine: query dump-guest-core machine property
  hw/boards: make it safe to include for linux-user
  machine: query phandle-start machine property
  machine: query kvm-shadow-mem machine property
  kvm: add machine state to kvm_arch_init
  machine: query kernel-irqchip property
  machine: allowed/required kernel-irqchip support
  machine: replace qemu opts with iommu property
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-12 09:13:07 +00:00
Marcel Apfelbaum
b16565b396 kvm: add machine state to kvm_arch_init
Needed to query machine's properties.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-11 18:16:17 +01:00
Peter Maydell
165fa4091e s390x/kvm: Features and fixes for 2.3
- an extension to the elf loader to allow relocations
 - make the ccw bios relocatable. This allows for bigger ramdisks
   or smaller guests
 - Handle all slow SIGPs in QEMU (instead of kernel) for better
   compliance and correctness
 - tell the KVM module the maximum guest size. This allows KVM
   to reduce the number or page table levels
 - Several fixes/cleanups
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJVABYpAAoJEBF7vIC1phx8M/kP/AsuFTCrWebziX5qdeIFX8Cu
 RBcnqm7Dgt7lg+fyt/mj7g7/PVZEoe9AQ5hWoXmguR850/PmMuEDfHhY6pAfKU+r
 RokYiQR2pHDWFU9D2qf3ggEcI4suym1mmuMjx4TEs9318zpREHu9fGpzfJxlQgXa
 SUqQDZWElYyiF1nu8cxvH7wqeJLalKSiQBRtkM3w2oG8Nw1TgFxt/xiYHkiz/rkr
 U2sQrCabOCcVC/nlDAaWajBq18rzqhFk6QZEZsf9O4jsxy8Pbmkw2cqSp68KBMeB
 o50lRrguGhuejQg6g4AXZWGgUt5YnNL0CIHmTXp0KTnijGSAHnWUPf+qCOOR/sfn
 1roTNwCH8rjSfpEPKAhmiLRcPTVzy6IYxaT+J7KniCRAyHdIk2NBF3cHzDBy47uC
 pre1pIHnKkwBkxv/xkj8CHlfcpCjp8sXhW6FSXoX9On5SKiROnQUwiLoUjtnvRXe
 kQZRhtgJSKnLTtEEZ3XWh/UDyD2QJiwnm1E5SjXEa/mdDqgUmsVsPtz29f/xDKJA
 GZGNOCsIew0286C+tf5M88JpIXqpAiEYXA9vw5ZUqzxh3ArNuT0GJGxrlWxbqD8j
 tbvjHIja62IbCxM8dtZ9v0M4YFNU+VLHdKEREziK6RKS9Ek7rJmSh8128JNQhJ/X
 RjiUxdcbApvEunZInwB/
 =6Cw+
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150310' into staging

s390x/kvm: Features and fixes for 2.3

- an extension to the elf loader to allow relocations
- make the ccw bios relocatable. This allows for bigger ramdisks
  or smaller guests
- Handle all slow SIGPs in QEMU (instead of kernel) for better
  compliance and correctness
- tell the KVM module the maximum guest size. This allows KVM
  to reduce the number or page table levels
- Several fixes/cleanups

# gpg: Signature made Wed Mar 11 10:17:13 2015 GMT using RSA key ID B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"

* remotes/borntraeger/tags/s390x-20150310:
  s390-ccw: rebuild BIOS
  s390/bios: Make the s390-ccw.img relocatable
  elf-loader: Provide the possibility to relocate s390 ELF files
  s390-ccw.img: Reinitialize guessing on reboot
  s390-ccw.img: Allow bigger ramdisk sizes or offsets
  s390x/kvm: passing max memory size to accelerator
  virtio-ccw: Convert to realize()
  virtio-s390: Convert to realize()
  virtio-s390: s390_virtio_device_init() can't fail, simplify
  s390x/kvm: enable the new SIGP handling in user space
  s390x/kvm: deliver SIGP RESTART directly if stopped
  s390x: add function to deliver restart irqs
  s390x/kvm: SIGP START is only applicable when STOPPED
  s390x/kvm: implement handling of new SIGP orders
  s390x/kvm: trace all SIGP orders
  s390x/kvm: helper to set the SIGP status in SigpInfo
  s390x/kvm: pass the SIGP instruction parameter to the SIGP handler
  s390x/kvm: more details for SIGP handler with one destination vcpu
  s390x: introduce defines for SIGP condition codes
  synchronize Linux headers to 4.0-rc3

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-11 15:11:58 +00:00
Dominik Dingel
a310b283e3 s390x/kvm: passing max memory size to accelerator
With "KVM: s390: Allow userspace to limit guest memory size" KVM is able to
do some optimizations based on the guest memory limit.

The guest memory limit is computed by the initial definition and with the notion of
hotplugged memory.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1425570981-40609-3-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:23 +01:00
David Hildenbrand
f16d3f5874 s390x/kvm: enable the new SIGP handling in user space
All required SIGP handlers have been implemented in QEMU.

Let's enable the new sigp handling in user space if the kernel supports it.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-11-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:23 +01:00
David Hildenbrand
e3b7b57807 s390x/kvm: deliver SIGP RESTART directly if stopped
According to the PoP, a restart irq has to be delivered "without first honoring
any other pending interruptions", if a cpu is in the STOPPED state.

While it is hard to implement this case in kvm, it can easily be handled in qemu.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-10-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:23 +01:00
David Hildenbrand
4f2b55d184 s390x/kvm: SIGP START is only applicable when STOPPED
In preparation for other CPU states, SIGP START will only start a VCPU if it is
in the STOPPED state.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-8-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
18ff949474 s390x/kvm: implement handling of new SIGP orders
This patch adds handling code for the following SIGP orders:
- SIGP SET ARCHITECTURE
- SIGP SET PREFIX
- SIGP STOP
- SIGP STOP AND STORE STATUS
- SIGP STORE STATUS AT ADDRESS

SIGP STOP (AND STORE STATUS) are the only orders that can stay pending forever
(and may only be interrupted by resets), so special care has to be taken about
them. Their status also has to be tracked within QEMU. This patch takes
care of migrating this status (e.g. if migration happens during a SIGP STOP).

Due to the BQL, only one VCPU is currently able to execute SIGP handlers at a
time. According to the PoP, BUSY should be returned if another SIGP order is
currently being executed on a VCPU. This can only be implemented when the BQL
does not protect all handlers. For now, all SIGP orders on all VCPUs will be
serialized, which will be okay for the first shot.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-7-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
56dba22b7d s390x/kvm: trace all SIGP orders
This patch adds tracing code for all SIGP orders (including the destination
vcpu and the resulting condition code).

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-6-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
36b5c84556 s390x/kvm: helper to set the SIGP status in SigpInfo
Whenever we set the SIGP status in the status register, we have to wipe out
the lower 4 bytes and keep the higher 4 bytes. Also the condition code will
always be set to STATUS_STORED.

Let's introduce the wrapper for SigpInfo, as this will avoid most duplicate
code in the future.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-5-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
22740e3fc0 s390x/kvm: pass the SIGP instruction parameter to the SIGP handler
The parameter of the SIGP instruction will be neded in the future. Let's read it
out and store it in the struct sigp_info, so it can be passed to the sigp
handlers.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-4-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
6eb8f212d2 s390x/kvm: more details for SIGP handler with one destination vcpu
Whenever a sigp order is to be executed by a target vcpu, we use run_on_cpu().
As we have only one pointer to pass all data to these sigp handlers, let's
introduce the struct sigp_info and use it as a transport container.

All orders targeting a single vcpu are now  dispatched from a separate
handler. The destination vcpu is only valid for these orders and must not be
checked for SIGP SET ARCHITECTURE.

The sigp_info is filled with life in this new handler and used to pass the
information about the sigp order to the existing handlers. The cc is set
within these handlers.

Rename sigp_cpu_start() and sigp_cpu_restart() on the way to match the SIGP
order names (in order to avoid touching affected lines several times).

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-3-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
David Hildenbrand
5172b780c5 s390x: introduce defines for SIGP condition codes
This patch introduces defines for the SIGP condition codes and replaces all
occurrences of numeral condition codes with the new defines.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-2-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10 09:26:22 +01:00
Gonglei
81b07353c5 Remove superfluous '\n' around error_report()
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-03-10 08:15:33 +03:00
Thomas Huth
653b080960 s390x/ioinst: Set condition code in ioinst_handle_tsch() handler
Move the setting of the condition code from kvm.c into the handler
function in ioinst.c itself, just like it has been done with the other
handlers already (TSCH has just not been changed yet since it is called
from a different dispatcher in kvm.c).

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18 09:37:15 +01:00
Thomas Huth
801cdd355f s390x/kvm: Add function for injecting pgm access exceptions
Program access exceptions are defined to deliver a translation exception
code in the low-core. Add a function trigger_access_exception() that
generates the proper program interrupt on both KVM and non-KVM systems
and switch the existing code to use it.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18 09:37:15 +01:00
Fan Zhang
e91e972ccf s390x/ipl: drop reipl parameters on resets
Whenever a reboot initiated by the guest is done, the reipl parameters should
remain valid. The disk configured by the guest is to be used for
ipl'ing. External reboot/reset request (e.g. via virsh reset guest) should
completely reset the guest to the initial state, and therefore also reset the
reipl parameters, resulting in an ipl behaviour of the initially configured
guest. This could be an external kernel or a disk.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-13 16:14:09 +01:00
Christian Borntraeger
68540b1a1b s390x/kvm: unknown DIAGNOSE code should give a specification exception
As described in CP programming services an unimplemented DIAGNOSE
function should return a specification exception. Today we give the
guest an operation exception.
As both exception types are suppressing and Linux as a guest does not
care about the type of program check in its exception table handler
as long as both types have the same kind of error handling (nullifying,
terminating, suppressing etc.) this was unnoticed.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-02-03 13:42:40 +01:00
Thomas Huth
20dd25bb67 s390x/kvm: Fix diag-308 register decoding
Fix the decoding of the r1 register number in the diagnose 308 handler.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-02-03 13:42:40 +01:00
Frank Blaschka
9e03a0405d kvm: extend kvm_irqchip_add_msi_route to work on s390
on s390 MSI-X irqs are presented as thin or adapter interrupts
for this we have to reorganize the routing entry to contain
valid information for the adapter interrupt code on s390.
To minimize impact on existing code we introduce an architecture
function to fixup the routing entry.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-01-12 10:14:04 +01:00
Frank Blaschka
863f6f52b7 s390: implement pci instructions
This patch implements the s390 pci instructions in qemu. It allows
to access and drive pci devices attached to the s390 pci bus.
Because of platform constrains devices using IO BARs are not
supported. Also a device has to support MSI/MSI-X to run on s390.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-01-12 10:14:04 +01:00
David Hildenbrand
59ac15326e s390x/kvm: avoid syscalls by syncing registers with kvm_run
We can avoid loads of syscalls when dropping to user space by storing the values
of more registers directly within kvm_run.

Support is added for:
- ARCH0: CPU timer, clock comparator, TOD programmable register,
         guest breaking-event register, program parameter
- PFAULT: pfault parameters (token, select, compare)

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-01-12 10:14:04 +01:00
David Hildenbrand
fdb78ec006 s390x/kvm: sync register support helper function
Let's unify the code to sync registers by moving the checks into a helper
function can_sync_regs().

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-01-12 10:14:04 +01:00
Peter Maydell
dfa9c2a0f4 - Migration and linuxboot fixes for 2.2 regressions
- valgrind/KVM support
 - small i386 patches
 - PCI SD host controller support
 - malloc/free cleanups from Markus (x86/scsi)
 - IvyBridge model
 - XSAVES support for KVM
 - initial patches from record/replay
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJUjw28AAoJEL/70l94x66D9kcH/RBoc4mNjrSt+MLy9Y+Fu1bu
 HNhfd1n/yA0MKSHtSYwJPgkiuoxG3jHt0N69gbpZE0kdBcK+PPZZZUpTFIAU6vD/
 D0O7l+2viOcl2z7SPuHIp9/O0CChsAYZkH+Zn2XbeStbe4d4f6bFzdy4vblMsirQ
 BfMn/Y2Dw1uLknvrO3/QKgGhbK5Nxo/Te7lavRP+w7FgOhAdAUHOhBPfGrPWtG+0
 0hVWmxoQyJtk+Ltt2oF4zUkql7czDsgyXkaO82l3TkecCvtqolCuby4lQIFJnq7E
 vw0XUDwC/l/MWnXFq/rG97yopfIxkSAthT/xP/+TTJKM/oJEWDTh6I8ghQTdG90=
 =ncys
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

- Migration and linuxboot fixes for 2.2 regressions
- valgrind/KVM support
- small i386 patches
- PCI SD host controller support
- malloc/free cleanups from Markus (x86/scsi)
- IvyBridge model
- XSAVES support for KVM
- initial patches from record/replay

# gpg: Signature made Mon 15 Dec 2014 16:35:08 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@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: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (47 commits)
  sdhci: Support SDHCI devices on PCI
  sdhci: Define SDHCI PCI ids
  sdhci: Add "sysbus" to sdhci QOM types and methods
  sdhci: Remove class "virtual" methods
  sdhci: Set a default frequency clock
  serial: only resample THR interrupt on rising edge of IER.THRI
  serial: update LSR on enabling/disabling FIFOs
  serial: clean up THRE/TEMT handling
  serial: reset thri_pending on IER writes with THRI=0
  linuxboot: fix loading old kernels
  kvm/apic: fix 2.2->2.1 migration
  target-i386: add Ivy Bridge CPU model
  target-i386: add f16c and rdrand to Haswell and Broadwell
  target-i386: add VME to all CPUs
  pc: add 2.3 machine types
  i386: do not cross the pages boundaries in replay mode
  cpus: make icount warp behave well with respect to stop/cont
  timer: introduce new QEMU_CLOCK_VIRTUAL_RT clock
  cpu-exec: invalidate nocache translation if they are interrupted
  icount: introduce cpu_get_icount_raw
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-15 16:43:42 +00:00
Christian Borntraeger
e6eef7c221 valgrind/s390x: avoid false positives on KVM_SET_FPU ioctl
struct kvm_fpu contains an alignment padding on s390x. Let's use a
designated initializer to avoid false positives from valgrind/memcheck.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15 12:21:01 +01:00
Eric Auger
f41389ae3c KVM_CAP_IRQFD and KVM_CAP_IRQFD_RESAMPLE checks
Compute kvm_irqfds_allowed by checking the KVM_CAP_IRQFD extension.
Remove direct settings in architecture specific files.

Add a new kvm_resamplefds_allowed variable, initialized by
checking the KVM_CAP_IRQFD_RESAMPLE extension. Add a corresponding
kvm_resamplefds_enabled() function.

A special notice for s390 where KVM_CAP_IRQFD was not immediatly
advirtised when irqfd capability was introduced in the kernel.
KVM_CAP_IRQ_ROUTING was advertised instead.

This was fixed in "KVM: s390: announce irqfd capability",
ebc3226202d5956a5963185222982d435378b899 whereas irqfd support
was brought in 84223598778ba08041f4297fda485df83414d57e,
"KVM: s390: irq routing for adapter interrupts".  Both commits
first appear in 3.15 so there should not be any kernel
version impacted by this QEMU modification.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15 12:21:01 +01:00
Christian Borntraeger
dc622deb2d s390x/kvm: Fix compile error
commit a2b257d621 "memory: expose alignment used for allocating RAM
as MemoryRegion API" triggered a compile error on KVM/s390x.

Fix the prototype and the implementation of legacy_s390_alloc.

Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-11-26 12:11:27 +01:00
Igor Mammedov
a2b257d621 memory: expose alignment used for allocating RAM as MemoryRegion API
introduce memory_region_get_alignment() that returns
underlying memory block alignment or 0 if it's not
relevant/implemented for backend.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-11-23 12:11:30 +02:00
Thomas Huth
f0d4dc18ce s390x/kvm: Fix warning from sparse
When running "sparse" with the s390x kvm.c code, it complains that
"constant 0x00400f1d40330000 is so big it is long" - let's fix this
by appending a proper suffix.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-11-05 16:35:55 +01:00