Lowercase them.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

All lowercase, use-dash instead of CamelCase.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

Use display device qdev id and head number instead of console index to
specify the QemuConsole.  This makes things consistent with input
devices (for input routing) and vnc server configuration, which both use
display and head too.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>

We have two places needing this, and a third one will come shortly.
So factor things out into a helper function to reduce code duplication.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>

usb: redirect bugfix, MAINTAINERS update.

# gpg: Signature made Mon 29 Feb 2016 11:09:54 GMT using RSA key ID D3E87138
# 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>"

* remotes/kraxel/tags/pull-usb-20160229-1:
  usb-redirect: Avoid double free of data
  MAINTAINERS: Add some missing entries for USB related files

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ui: spice dmabuf fix, MAINTAINERS updates.

# gpg: Signature made Mon 29 Feb 2016 10:41:15 GMT using RSA key ID D3E87138
# 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>"

* remotes/kraxel/tags/pull-ui-20160229-1:
  MAINTAINERS: Add an entry for the include/ui/ folder
  MAINTAINERS: Add spice-display.h to the SPICE section
  spice/gl: Enable dmabuf only for spice >= 0.13.1

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

fw_cfg: unbreak migration compatibility for 2.4 and earlier machines

# gpg: Signature made Fri 26 Feb 2016 09:45:50 GMT using RSA key ID D3E87138
# 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>"

* remotes/kraxel/tags/pull-fw-cfg-20160226-1:
  fw_cfg: unbreak migration compatibility for 2.4 and earlier machines

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

ppc patch queue for 2016-02-29

Some more accumulated patches for target-ppc, pseries machine type and
related devices to fit in before the qemu-2.6 soft freeze.
    * Mostly bugfixes and small cleanups for spapr and Mac platforms

# gpg: Signature made Mon 29 Feb 2016 06:56:34 GMT using RSA key ID 20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# 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: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.6-20160229:
  xics: report errors with the QEMU Error API
  migration: allow machine to enforce configuration section migration
  spapr: skip configuration section during migration of older machines
  dbdma: warn when using unassigned channel
  spapr: disable vmdesc submission for old machines
  spapr_pci: fix irq leak in RTAS ibm,change-msi
  spapr_pci: kill useless variable in rtas_ibm_change_msi()
  spapr_rng: disable hotpluggability

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

If dropping packets, data is freed, the caller's loop should not continue.

Reported by ccc-analyzer.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1456301288-1592-1-git-send-email-famz@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

USB-related docs and include files should go into the USB
section of the MAINTAINERS file.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1456392967-20274-2-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

The ui/ folder is listed in the "Graphics" section, so I think
the "include/ui/" folder should be listed there, too.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1456392967-20274-4-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1456392967-20274-3-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

After 474114b7 the dmabuf feature is enabled whenever spice
greater than or equal to spice 0.13.0 is found. This is because
two new functions are required: spice_qxl_gl_scanout and
spice_qxl_gl_draw_async. These were, however, introduce in 0.13.1
release. Well, technically they haven't been released yet, but
for sure they are not going to be part of 0.13.0 release (for the
ABI stability sake).

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Message-id: 1a724e97cb587624d6f6009c15395496bccfa32b.1456317738.git.mprivozn@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Using the return value to report errors is error prone:
- xics_alloc() returns -1 on error but spapr_vio_busdev_realize() errors
  on 0
- xics_alloc_block() returns the unclear value of ics->offset - 1 on error
  but both rtas_ibm_change_msi() and spapr_phb_realize() error on 0

This patch adds an errp argument to xics_alloc() and xics_alloc_block() to
report errors. The return value of these functions is a valid IRQ number
if errp is NULL. It is undefined otherwise.

The corresponding error traces get promotted to error messages. Note that
the "can't allocate IRQ" error message in spapr_vio_busdev_realize() also
moves to xics_alloc(). Similar error message consolidation isn't really
applicable to xics_alloc_block() because callers have extra context (device
config address, MSI or MSIX).

This fixes the issues mentioned above.

Based on previous work from Brian W. Hart.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Migration of pseries-2.3 doesn't have configuration section. Unfortunately,
QEMU 2.4/2.4.1/2.5 are buggy and always stream and expect the configuration
section, and break migration both ways.

This patch introduces a property which allows to enforce a configuration
section for machines who don't have one.

It can be set at startup:

-machine enforce-config-section=on

or later from the QEMU monitor:

qom-set /machine enforce-config-section on

It is up to the tooling to set or unset this property according to the
version of the QEMU at the other end of the pipe.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Since QEMU 2.4, we have a configuration section in the migration stream.
This must be skipped for older machines, like it is already done for x86.

This patch fixes the migration of pseries-2.3 from/to QEMU 2.3, but it
breaks migration of the same machine from/to QEMU 2.4/2.4.1/2.5. We do
that anyway because QEMU 2.3 is likely to be more widely deployed than
newer QEMU versions.

Fixes: 61964c23
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

With this, it's easier to know if a guest uses an invalid and/or unimplemented
DMA channel.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

Since QEMU 2.3, we have a vmdesc section in the migration stream.
This section is not mandatory but when migrating a pseries-2.2
machine from QEMU 2.2, you get a warning at the destination:

qemu-system-ppc64: Expected vmdescription section, but got 0

The warning goes away if we decide to skip vmdesc as well for
older pseries, like it is already done for pc's.

This can only be observed with -cpu POWER7 because POWER8
cannot migrate from QEMU 2.2 to 2.3 (insns_flags2 mismatch).

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

This RTAS call is used to request new interrupts or to free all interrupts.

If the driver has already allocated interrupts and asks again for a non-null
number of irqs, then the rtas_ibm_change_msi() function will silently leak
the previous interrupts.

It happens because xics_free() is only called when the driver releases all
interrupts (!req_num case). Note that the previously allocated spapr_pci_msi
is not leaked because the GHashTable is created with destroy functions and
g_hash_table_insert() hence frees the old value.

This patch makes sure any previously allocated MSIs are released when a
new allocation succeeds.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

The num local variable is initialized to zero and has no writer.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

It is currently possible to hotplug a spapr_rng device but QEMU crashes
when we try to hot unplug:

ERROR:hw/core/qdev.c:295:qdev_unplug: assertion failed: (hotplug_ctrl)
Aborted

This happens because spapr_rng isn't plugged to any bus and sPAPR does
not provide hotplug support for it: qdev_get_hotplug_handler() hence
return NULL and we hit the assertion.

And anyway, it doesn't make much sense to unplug this device since hcalls
cannot be unregistered. Even the idea of hotplugging a RNG device instead
of declaring it on the QEMU command line looks weird.

This patch simply disables hotpluggability for the spapr-rng class.

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

target-arm queue:
 * Clean up handling of bad mode switches writing to CPSR, and implement
   the ARMv8 requirement that they set PSTATE.IL
 * Implement MDCR_EL3.TPM and MDCR_EL2.TPM traps on perf monitor
   register accesses
 * Don't implement stellaris-pl061-only registers on generic-pl061
 * Fix SD card handling for raspi
 * Add missing include files to MAINTAINERS
 * Mark CNTHP_TVAL_EL2 as ARM_CP_NO_RAW
 * Make reserved ranges in ID_AA64* spaces RAZ, not UNDEF

# gpg: Signature made Fri 26 Feb 2016 15:19:07 GMT using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"

* remotes/pmaydell/tags/pull-target-arm-20160226:
  target-arm: Make reserved ranges in ID_AA64* spaces RAZ, not UNDEF
  target-arm: Mark CNTHP_TVAL_EL2 as ARM_CP_NO_RAW
  sdhci: add quirk property for card insert interrupt status on Raspberry Pi
  sdhci: Revert "add optional quirk property to disable card insertion/removal interrupts"
  MAINTAINERS: Add some missing ARM related header files
  raspi: fix SD card with recent sdhci changes
  ARM: PL061: Checking register r/w accesses to reserved area
  target-arm: Implement MDCR_EL3.TPM and MDCR_EL2.TPM traps
  target-arm: Fix handling of SDCR for 32-bit code
  target-arm: Make Monitor->NS PL1 mode changes illegal if HCR.TGE is 1
  target-arm: Make mode switches from Hyp via CPS and MRS illegal
  target-arm: In v8, make illegal AArch32 mode changes set PSTATE.IL
  target-arm: Forbid mode switch to Mon from Secure EL1
  target-arm: Add Hyp mode checks to bad_mode_switch()
  target-arm: Add comment about not implementing NSACR.RFR
  target-arm: In cpsr_write() ignore mode switches from User mode
  linux-user: Use restrictive mask when calling cpsr_write()
  target-arm: Raw CPSR writes should skip checks and bank switching
  target-arm: Add write_type argument to cpsr_write()
  target-arm: Give CPSR setting on 32-bit exception return its own helper

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

migration pull
 - fix a qcow2 assert
 - fix for older distros (CentOS 5)
 - documentation for vmstate flags
 - minor code rearrangement

# gpg: Signature made Fri 26 Feb 2016 15:15:15 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit-migration/tags/migration-for-2.6-5:
  migration (postcopy): move bdrv_invalidate_cache_all of of coroutine context
  migration (ordinary): move bdrv_invalidate_cache_all of of coroutine context
  migration/vmstate: document VMStateFlags
  MAINTAINERS: Add docs/migration.txt to the "Migration" section
  migration/postcopy-ram: Guard use of sys/eventfd.h with CONFIG_EVENTFD
  migration: reorder code to make it symmetric

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

There is a possibility to hit an assert in qcow2_get_specific_info that
s->qcow_version is undefined. This happens when VM in starting from
suspended state, i.e. it processes incoming migration, and in the same
time 'info block' is called.

The problem is that qcow2_invalidate_cache() closes the image and
memset()s BDRVQcowState in the middle.

The patch moves processing of bdrv_invalidate_cache_all out of
coroutine context for postcopy migration to avoid that. This function
is called with the following stack:
  process_incoming_migration_co
  qemu_loadvm_state
  qemu_loadvm_state_main
  loadvm_process_command
  loadvm_postcopy_handle_run

Signed-off-by: Denis V. Lunev <den@openvz.org>
Tested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Juan Quintela <quintela@redhat.com>
CC: Amit Shah <amit.shah@redhat.com>
Message-Id: <1456304019-10507-3-git-send-email-den@openvz.org>
Signed-off-by: Amit Shah <amit.shah@redhat.com>

There is a possibility to hit an assert in qcow2_get_specific_info that
s->qcow_version is undefined. This happens when VM in starting from
suspended state, i.e. it processes incoming migration, and in the same
time 'info block' is called.

The problem is that qcow2_invalidate_cache() closes the image and
memset()s BDRVQcowState in the middle.

The patch moves processing of bdrv_invalidate_cache_all out of
coroutine context for standard migration to avoid that.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Juan Quintela <quintela@redhat.com>
CC: Amit Shah <amit.shah@redhat.com>
Message-Id: <1456304019-10507-2-git-send-email-den@openvz.org>

[Amit: Fix a use-after-free bug]

Signed-off-by: Amit Shah <amit.shah@redhat.com>

The v8 ARM ARM defines that unused spaces in the ID_AA64* system
register ranges are Reserved and must RAZ, rather than being UNDEF.
Implement this.

In particular, ARM v8.2 adds a new feature register ID_AA64MMFR2,
and newer versions of the Linux kernel will attempt to read this,
which causes them not to boot up on versions of QEMU missing this fix.

Since the encoding .opc0 = 3, .opc1 = 0, .crn = 0, .crm = 2, .opc2 = 6
is actually defined in ARMv8 (as ID_MMFR4), we give it an entry in
the ARMCPU struct so CPUs can override it, though since none do
this too will just RAZ.

Cc: qemu-stable@nongnu.org
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1455890863-11203-1-git-send-email-peter.maydell@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>

Mark CNTHP_TVAL_EL2 as ARM_CP_NO_RAW due to the register not
having any underlying state. This fixes an issue with booting
KVM enabled kernels when EL2 is on.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1456490739-19343-1-git-send-email-edgar.iglesias@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

This quirk is a workaround for the following hardware behaviour, on
which UEFI (specifically, the bootloader for Windows on Pi2) depends:

1. at boot with an SD card present, the interrupt status/enable
   registers are initially zero
2. upon enabling it in the interrupt enable register, the card insert
   bit in the interrupt status register is immediately set
3. after a subsequent controller reset, the card insert interrupt does
   not fire, even if enabled in the interrupt enable register

Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1456436130-7048-3-git-send-email-Andrew.Baumann@microsoft.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

This reverts commit 72369755.

This change was poorly tested on my part. It squelched card insertion
interrupts on reset, but that was not necessary because sdhci_reset()
clears all the registers (via the call to memset), so the subsequent
sdhci_insert_eject_cb() call never sees the card insert interrupt
enabled. However, not calling the insert_eject_cb results in prnsts
remaining 0, when it actually needs to be updated to indicate card
presence and R/O status.

Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1456436130-7048-2-git-send-email-Andrew.Baumann@microsoft.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Some header files in the include/hw/arm/ directory can be assigned
to entries in the MAINTAINERS file.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1456399324-24259-1-git-send-email-thuth@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Recent changes to sdhci broke SD on raspi. This change mirrors
the logic to create the SD card device at the board level.

Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1456351128-5560-1-git-send-email-Andrew.Baumann@microsoft.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

pl061.c emulates two GPIO devices, ARM PL061 and TI Stellaris, which
share the same read/write functions (pl061_read and pl061_write).
However PL061 and Stellaris have different GPIO register definitions
and pl061_read()/pl061_write() doesn't check it. This patch enforces
checking on offset, preventing R/W into the reserved memory area.

Signed-off-by: Wei Huang <wei@redhat.com>
Message-id: 1455814580-17699-1-git-send-email-wei@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Implement the performance monitor register traps controlled
by MDCR_EL3.TPM and MDCR_EL2.TPM. Most of the performance
registers already have an access function to deal with the
user-enable bit, and the TPM checks can be added there. We
also need a new access function which only implements the
TPM checks for use by the few not-EL0-accessible registers
and by PMUSERENR_EL0 (which is always EL0-readable).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1455892784-11328-3-git-send-email-peter.maydell@linaro.org
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>

Fix two issues with our implementation of the SDCR:
 * it is only present from ARMv8 onwards
 * it does not contain several of the trap bits present in its 64-bit
   counterpart the MDCR_EL3

Put the register description in the right place so that it does not
get enabled for ARMv7 and earlier, and give it a write function so that
we can mask out the bits which should not be allowed to have an effect
if EL3 is 32-bit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1455892784-11328-2-git-send-email-peter.maydell@linaro.org
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>

If HCR.TGE is 1 then mode changes via CPS and MSR from Monitor to
NonSecure PL1 modes are illegal mode changes. Implement this check
in bad_mode_switch().

(We don't currently implement HCR.TGE, but this is the only missing
check from the v8 ARM ARM G1.9.3 and so it's worth adding now; the
rest of the HCR.TGE checks can be added later as necessary.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-12-git-send-email-peter.maydell@linaro.org

Mode switches from Hyp to any other mode via the CPS and MRS
instructions are illegal mode switches (though obviously switching
via exception return is valid).  Add this check to bad_mode_switch().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-11-git-send-email-peter.maydell@linaro.org

In v8, the illegal mode changes which are UNPREDICTABLE in v7 are
given architected behaviour:
 * the mode field is unchanged
 * PSTATE.IL is set (so any subsequent instructions will UNDEF)
 * any other CPSR fields are written to as normal

This is pretty much the same behaviour we picked for our
UNPREDICTABLE handling, with the exception that for v8 we
need to set the IL bit.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-10-git-send-email-peter.maydell@linaro.org

In v8 trying to switch mode to Mon from Secure EL1 is an
illegal mode switch. (In v7 this is impossible as all secure
modes except User are at EL3.) We can handle this case by
making a switch to Mon valid only if the current EL is 3,
which then gives the correct answer whether EL3 is AArch32
or AArch64.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-9-git-send-email-peter.maydell@linaro.org

We don't actually support Hyp mode yet, but add the correct
checks for it to the bad_mode_switch() function for completeness.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-8-git-send-email-peter.maydell@linaro.org

QEMU doesn't implement the NSACR.RFR bit, which is a permitted
IMPDEF in choice in ARMv7 and the only permitted choice in ARMv8.
Add a comment to bad_mode_switch() to note that this is why
FIQ is always a valid mode regardless of the CPU's Secure state.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1455556977-3644-7-git-send-email-peter.maydell@linaro.org