All four leaks are similar, so fix them in one patch.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We don't validate the existence of handle_output which may let a buggy
guest to trigger a SIGSEV easily. E.g:
1) write 10 to queue_sel to a virtio net device with only 1 queue
2) setup an arbitrary pfn
3) then notify queue 10
Fixing this by validating the existence of handle_output before.
Cc: qemu-stable@nongnu.org
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Don Koch <dkoch@verizon.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
* fix handling of execute-never bits in page table walks
* tell kernel to initialize KVM GIC in realize function
* fix handling of STM (user) with r15 in register list
* ignore low bit of PC in M-profile exception return
* fix linux-user get/set_tls syscalls on CPUs with TZ
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20150316' into staging
target-arm queue:
* fix handling of execute-never bits in page table walks
* tell kernel to initialize KVM GIC in realize function
* fix handling of STM (user) with r15 in register list
* ignore low bit of PC in M-profile exception return
* fix linux-user get/set_tls syscalls on CPUs with TZ
# gpg: Signature made Mon Mar 16 12:39:04 2015 GMT using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
* remotes/pmaydell/tags/pull-target-arm-20150316:
linux-user: Access correct register for get/set_tls syscalls on ARM TZ CPUs
target-arm: Ignore low bit of PC in M-profile exception return
target-arm: Fix handling of STM (user) with r15 in register list
hw/intc/arm_gic: Initialize the vgic in the realize function
target-arm: get_phys_addr_lpae: more xn control
target-arm: fix get_phys_addr_v6/SCTLR_AFE access check
target-arm: convert check_ap to ap_to_rw_prot
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Older PC machine types might by accident be backwards live migration compatible,
but with the new vmdesc self-describing blob in our live migration stream we
would break that compatibility.
Also users wouldn't expect massive behaviorial differences when updating to a
new version of QEMU while retaining their old machine type, especially not
potential breakage in tooling around live migration.
So disable vmdesc submission for old PC machine types.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
We now always send a JSON blob describing the migration file format as part
of the migration stream. However, some tools built around QEMU have proven
to stumble over this.
This patch gives the user the chance to disable said self-describing part of
the migration stream. To disable vmdesc submission, just add
-machine suppress-vmdesc=on
to your QEMU command line.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
One of the really nice things about the VM description format is that it goes
over the wire when live migration is happening. Unfortunately QEMU today closes
any socket once it sees VM_EOF coming, so we never give the VMDESC the chance to
actually land on the wire.
This patch makes QEMU read the description as well. This way we ensure that
anything wire tapping us in between will get the chance to also interpret the
stream.
Along the way we also fix virt tests that assume that number_bytes_sent on the
sender side is equal to number_bytes_read which was true before the VMDESC
patches and is true again with this patch.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
It has always been a page header, not a block header. Once there, the
flag argument was only passed to make a bit or with it, just do the or
on the caller.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Add a parameter to pass the number of bytes written, and make it return
the number of pages written instead.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Add a parameter to pass the number of bytes written, and make it return
the number of pages written instead.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Add a parameter to pass the number of bytes written, and make it return
the number of pages written instead.
Signed-off-by: Juan Quintela <quintela@redhat.com>
It used to be an int, but then we can't pass directly the
bytes_transferred parameter, that would happen later in the series.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Add migrate_incoming/migrate-incoming to start an incoming
migration.
Once a qemu has been started with
-incoming defer
the migration can be started by issuing:
migrate_incoming uri
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
-incoming defer causes qemu to wait for an incoming migration
to be specified later. The monitor can be used to set migration
capabilities that may affect the incoming connection process.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
* remotes/kvaneesh/for-upstream:
virtio: Fix memory leaks reported by Coverity
virtfs-proxy: Fix possible overflow
fsdev/virtfs-proxy-helper: Fix improper use of negative value
hw/9pfs/virtio-9p-posix-acl: Fix out-of-bounds access
9pfs-proxy: tiny cleanups in proxy_pwritev and proxy_preadv
9pfs-local: simplify/optimize local_mapped_attr_path()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When support was added for TrustZone to ARM CPU emulation, we failed
to correctly update the support for the linux-user implementation of
the get/set_tls syscalls. This meant that accesses to the TPIDRURO
register via the syscalls were always using the non-secure copy of
the register even if native MRC/MCR accesses were using the secure
register. This inconsistency caused most binaries to segfault on startup
if the CPU type was explicitly set to one of the TZ-enabled ones like
cortex-a15. (The default "any" CPU doesn't have TZ enabled and so is
not affected.)
Use access_secure_reg() to determine whether we should be using
the secure or the nonsecure copy of TPIDRURO when emulating these
syscalls.
Signed-off-by: Mikhail Ilyin <m.ilin@samsung.com>
Message-id: 1426505198-2411-1-git-send-email-m.ilin@samsung.com
[PMM: rewrote commit message to more clearly explain the issue
and its consequences.]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
For the ARM M-profile cores, exception return pops various registers
including the PC from the stack. The architecture defines that if the
lowest bit in the new PC value is set (ie the PC is not halfword
aligned) then behaviour is UNPREDICTABLE. In practice hardware
implementations seem to simply ignore the low bit, and some buggy
RTOSes incorrectly rely on this. QEMU's behaviour was architecturally
permitted, but bringing QEMU into line with the hardware behaviour
allows more guest code to run. We log the situation as a guest error.
This was reported as LP:1428657.
Reported-by: Anders Esbensen <anders@lyes.dk>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The A32 encoding of LDM distinguishes LDM (user) from LDM (exception
return) based on whether r15 is in the register list. However for
STM (user) there is no equivalent distinction. We were incorrectly
treating "r15 in list" as indicating exception return for both LDM
and STM, with the result that an STM (user) involving r15 went into
an infinite loop. Fix this; note that the value stored for r15
in this case is the current PC regardless of our current mode.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1426015125-5521-1-git-send-email-peter.maydell@linaro.org
This patch forces vgic initialization in the vgic realize function.
It uses a new group/attribute that allows such operation:
KVM_DEV_ARM_VGIC_GRP_CTRL/KVM_DEV_ARM_VGIC_CTRL_INIT
This earlier initialization allows, for example, to setup VFIO
signaling and irqfd after vgic initialization, on a reset notifier.
Signed-off-by: Eric Auger <eric.auger@linaro.org>
Message-id: 1426094226-8515-1-git-send-email-eric.auger@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This patch makes the following changes to the determination of
whether an address is executable, when translating addresses
using LPAE.
1. No longer assumes that PL0 can't execute when it can't read.
It can in AArch64, a difference from AArch32.
2. Use va_size == 64 to determine we're in AArch64, rather than
arm_feature(env, ARM_FEATURE_V8), which is insufficient.
3. Add additional XN determinants
- NS && is_secure && (SCR & SCR_SIF)
- WXN && (prot & PAGE_WRITE)
- AArch64: (prot_PL0 & PAGE_WRITE)
- AArch32: UWXN && (prot_PL0 & PAGE_WRITE)
- XN determination should also work in secure mode (untested)
- XN may even work in EL2 (currently impossible to test)
4. Cleans up the bloated PAGE_EXEC condition - by removing it.
The helper get_S1prot is introduced. It may even work in EL2,
when support for that comes, but, as the function name implies,
it only works for stage 1 translations.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Message-id: 1426099139-14463-4-git-send-email-drjones@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Introduce simple_ap_to_rw_prot(), which has the same behavior as
ap_to_rw_prot(), but takes the 2-bit simple AP[2:1] instead of
the 3-bit AP[2:0]. Use this in get_phys_addr_v6 when SCTLR_AFE
is set, as that bit indicates we should be using the simple AP
format.
It's unlikely this path is getting used. I don't see CR_AFE
getting used by Linux, so possibly not. If it had been, then
the check would have been wrong for all but AP[2:1] = 0b11.
Anyway, this should fix it up, in case it ever does get used.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1426099139-14463-3-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Instead of mixing access permission checking with access permissions
to page protection flags translation, just do the translation, and
leave it to the caller to check the protection flags against the access
type. Also rename to ap_to_rw_prot to better describe the new behavior.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1426099139-14463-2-git-send-email-drjones@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- handle TOD clock during migration
- CPACF key wrap options
- limit amount of pci device code we build
- ensure big endian accesses for ccws
- various fixes and cleanups
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Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20150316' into staging
Final batch of s390x enhancements/fixes for 2.3:
- handle TOD clock during migration
- CPACF key wrap options
- limit amount of pci device code we build
- ensure big endian accesses for ccws
- various fixes and cleanups
# gpg: Signature made Mon Mar 16 10:01:44 2015 GMT using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20150316:
s390x/config: Do not include full pci.mak
s390x/pci: fix length in sei_nt2 event
s390x/ipl: remove dead code
s390x/virtio-bus: Remove unused function s390_virtio_bus_console()
s390x: CPACF: Handle key wrap machine options
s390x/kvm: make use of generic vm attribute check
kvm: encapsulate HAS_DEVICE for vm attrs
virtio-ccw: assure BE accesses
s390x/kvm: Guest Migration TOD clock synchronization
s390x: Replace unchecked qdev_init() by qdev_init_nofail()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge remote-tracking branch 'remotes/rth/tags/tcg-pull-20150313' into staging
Pool TCG data, and ALWAYS/NEVER fix
# gpg: Signature made Fri Mar 13 20:09:09 2015 GMT using RSA key ID 4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg: aka "Richard Henderson <rth@redhat.com>"
# gpg: aka "Richard Henderson <rth@twiddle.net>"
* remotes/rth/tags/tcg-pull-20150313:
tcg: Complete handling of ALWAYS and NEVER
tcg: Use tcg_malloc to allocate TCGLabel
tcg: Change generator-side labels to a pointer
tcg: Change translator-side labels to a pointer
tcg-ia64: Use tcg_malloc to allocate TCGLabelQemuLdst
tcg: Use tcg_malloc to allocate TCGLabelQemuLdst
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
pci.mak includes a lot of devices - and most of them do not make
sense on s390x, like USB controllers or audio cards. These devices
also show up when running "qemu-system-s390x -device help" and thus
could raise the hope for the users that they could use these kind
of devices with qemu-system-s390x. To avoid this confusion, we
should not include pci.mak and rather include the bare minimum
manually instead.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Acked-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Message-Id: <1426169954-6062-1-git-send-email-thuth@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
The sei_nt2 event must contain the length of the event.
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1426164834-38648-7-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
load_image_targphys already checks the max size and will return
an error code. So the follow-on check will never trigger.
Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1426164834-38648-6-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
The function s390_virtio_bus_console() is completely unused and thus
can be removed safely.
Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Message-Id: <1426164834-38648-5-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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>
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>
More and more virtual machine specifics between kvm and qemu will be
transferred with vm attributes.
So we encapsulate the common logic in a generic function.
Additionally we need only to check during initialization if kvm supports
virtual machine attributes.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Suggested-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-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: <1426164834-38648-2-git-send-email-jfrei@linux.vnet.ibm.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
All fields in structures transmitted by ccws are big endian; assure
we handle them as such.
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>
Message-Id: <1426067871-17693-2-git-send-email-cornelia.huck@de.ibm.com>
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>
s390_flic_init() is a helper to create and realize either
"s390-flic-kvm" or "s390-flic-qemu". When qdev_init() fails, it
complains to stderr and succeeds.
Except it can't actually fail, because the "s390-flic-qemu" is a dummy
without a realize method, and "s390-flic-kvm"'s realize can't fail,
even when the kernel device is really unavailable. Odd.
Replace qdev_init() by qdev_init_nofail() to make "can't fail" locally
obvious, and get rid of the unreachable error reporting.
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-Id: <1423128889-18260-4-git-send-email-armbru@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Carries two bugfixes and support for multiple pci root buses.
git shortlog rel-1.8.0..rel-1.8.1
=================================
Ameya Palande (1):
x86: add barrier to read{b,w,l} and write{b,w,l} functions
Kevin O'Connor (1):
smp: Fix smp race introduced in 0673b787
Marcel Apfelbaum (2):
fw/pci: scan all buses if extraroots romfile is present
fw/pci: map memory and IO regions for multiple pci root buses
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
All four leaks are similar, so fix them in one patch.
Success path was not doing memory free.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
It's detected by coverity. The socket name specified
should fit in the sockadd_un.sun_path. If not abort.
Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Pre-allocating 512 of them per TB is a waste.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This is less about improved type checking than enabling a
subsequent change to the representation of labels.
Acked-by: Claudio Fontana <claudio.fontana@huawei.com>
Tested-by: Claudio Fontana <claudio.fontana@huawei.com>
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This is improved type checking for the translators -- it's no longer
possible to accidentally swap arguments to the branch functions.
Note that the code generating backends still manipulate labels as int.
With notable exceptions, the scope of the change is just a few lines
for each target, so it's not worth building extra machinery to do this
change in per-target increments.
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Leon Alrae <leon.alrae@imgtec.com>
Cc: Anthony Green <green@moxielogic.com>
Cc: Jia Liu <proljc@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Pre-allocating 640 of them per TB is a waste.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
A couple of #ifdef changes necessary to use NetBSD's ucontext
structs on sparc64 and arm.
Signed-off-by: Tobias Nygren <tnn@NetBSD.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1425591461-17550-1-git-send-email-tnn@NetBSD.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
