In do_ats_write(), rather than using extended_addresses_enabled() to
decide whether the value we get back from get_phys_addr() is a 64-bit
format PAR or a 32-bit one, use arm_s1_regime_using_lpae_format().
This is not really the correct answer, because the PAR format
depends on the AT instruction being used, not just on the
translation regime. However getting this correct requires a
significant refactoring, so that get_phys_addr() returns raw
information about the fault which the caller can then assemble
into a suitable FSR/PAR/syndrome for its purposes, rather than
get_phys_addr() returning a pre-formatted FSR.
However this change at least improves the situation by making
the PAR work correctly for address translation operations done
at AArch64 EL2 on the EL2 translation regime. In particular,
this is necessary for Xen to be able to run in our emulation,
so this seems like a safer interim fix given that we are in freeze.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: 1509719814-6191-1-git-send-email-peter.maydell@linaro.org
The CPU ID registers ID_AA64PFR0_EL1, ID_PFR1_EL1 and ID_PFR1
have a field for reporting presence of GICv3 system registers.
We need to report this field correctly in order for Xen to
work as a guest inside QEMU emulation. We mustn't incorrectly
claim the sysregs exist when they don't, though, or Linux will
crash.
Unfortunately the way we've designed the GICv3 emulation in QEMU
puts the system registers as part of the GICv3 device, which
may be created after the CPU proper has been realized. This
means that we don't know at the point when we define the ID
registers what the correct value is. Handle this by switching
them to calling a function at runtime to read the value, where
we can fill in the GIC field appropriately.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: 1510066898-3725-1-git-send-email-peter.maydell@linaro.org
Currently, multi threaded TCG with > 1 VCPU gets stuck during IPL, when
the bios tries to switch to the loaded kernel via DIAG 308.
As run_on_cpu() is used, we run into a deadlock after handling the reset.
We need the iolock (just like KVM).
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171116170526.12643-4-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Looks like the last fix + cleanup introduced another bug. (for now Linux
guests don't seem to care) - we store the crs into ars.
Fixes: 947a38bd6f ("s390x/kvm: fix and cleanup storing CPU status")
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171116170526.12643-2-david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Use of GETPC must be restricted to those functions that are
directly called from TCG generated code.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Fixes: 2399d4e7ce
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We use raw memory primitives along the !parallel_cpus paths in order to
simplify the endianness handling. Because of that, we did not benefit
from the generic changes to cpu_ldst_user_only_template.h.
The simplest fix is to manipulate helper_retaddr here.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Fixes the following warning when compiling with gcc 5.4.0 with -O1
optimizations and --enable-debug:
target/arm/translate-a64.c: In function ‘aarch64_tr_translate_insn’:
target/arm/translate-a64.c:2361:8: error: ‘post_index’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
if (!post_index) {
^
target/arm/translate-a64.c:2307:10: note: ‘post_index’ was declared here
bool post_index;
^
target/arm/translate-a64.c:2386:8: error: ‘writeback’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
if (writeback) {
^
target/arm/translate-a64.c:2308:10: note: ‘writeback’ was declared here
bool writeback;
^
Note that idx comes from selecting 2 bits, and therefore its value
can be at most 3.
Signed-off-by: Emilio G. Cota <cota@braap.org>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1510087611-1851-1-git-send-email-cota@braap.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We added the entry to insn-data.def, but failed to update op_risbg
to match. No need to special-case the imask inversion, since that
is already ~0 for RISBG (and now RISBGN).
Fixes: 375ee58bed
Fixes: https://bugs.launchpad.net/qemu/+bug/1701798 (s390x part)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20171107145546.767-1-richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This feature is present for some targets in the bfd disassembler(s).
Implement it generically for all capstone users.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
While trying to make KVM PR usable again, commit 5dfaa532ae introduced a
regression: the current compat_pvr value is passed to KVM instead of the
new one. This means that we always pass 0 instead of the max-cpu-compat
PVR during the initial machine reset. And at CAS time, we either pass
the PVR from the command line or even don't call kvmppc_set_compat() at
all, ie, the PCR will not be set as expected.
For example if we start a big endian fedora26 guest in power7 compat
mode on a POWER8 host, we get this in the guest:
$ cat /proc/cpuinfo
processor : 0
cpu : POWER7 (architected), altivec supported
clock : 4024.000000MHz
revision : 2.0 (pvr 004d 0200)
timebase : 512000000
platform : pSeries
model : IBM pSeries (emulated by qemu)
machine : CHRP IBM pSeries (emulated by qemu)
MMU : Hash
but the guest can still execute POWER8 instructions, and the following
program succeeds:
int main()
{
asm("vncipher 0,0,0"); // ISA 2.07 instruction
}
Let's pass the new compat_pvr to kvmppc_set_compat() and the program fails
with SIGILL as expected.
Reported-by: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
In the user-mode-only version of sparc_cpu_handle_mmu_fault(),
we must save the fault address for a data fault into the CPU
state's mmu registers, because the code in linux-user/main.c
expects to find it there in order to populate the si_addr
field of the guest siginfo.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
For AArch32 LDREXD and STREXD, architecturally the 32-bit word at the
lowest address is always Rt and the one at addr+4 is Rt2, even if the
CPU is big-endian. Our implementation does these with a single
64-bit store, so if we're big-endian then we need to put the two
32-bit halves together in the opposite order to little-endian,
so that they end up in the right places. We were trying to do
this with the gen_aa32_frob64() function, but that is not correct
for the usermode emulator, because there there is a distinction
between "load a 64 bit value" (which does a BE 64-bit access
and doesn't need swapping) and "load two 32 bit values as one
64 bit access" (where we still need to do the swapping, like
system mode BE32).
Fixes: https://bugs.launchpad.net/qemu/+bug/1725267
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 1509622400-13351-1-git-send-email-peter.maydell@linaro.org
On a successful address translation instruction, PAR is supposed to
contain cacheability and shareability attributes determined by the
translation. We previously returned 0 for these bits (in line with the
general strategy of ignoring caches and memory attributes), but some
guest OSes may depend on them.
This patch collects the attribute bits in the page-table walk, and
updates PAR with the correct attributes for all LPAE translations.
Short descriptor formats still return 0 for these bits, as in the
prior implementation.
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 20171031223830.4608-1-Andrew.Baumann@microsoft.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
WFI/E are often, but not always, 4 bytes long. When they are, we need to
set ARM_EL_IL_SHIFT in the syndrome register.
Pass the instruction length to HELPER(wfi), use it to decrement pc
appropriately and to pass an is_16bit flag to syn_wfx, which sets
ARM_EL_IL_SHIFT if needed.
Set dc->insn in both arm_tr_translate_insn and thumb_tr_translate_insn.
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
Message-id: alpine.DEB.2.10.1710241055160.574@sstabellini-ThinkPad-X260
[PMM: move setting of dc->insn for Thumb so it is correct for 32 bit insns]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- missing \r in the BIOS console output
- CPU type name is now "s390x-cpu"
- fixup for the host-model on z14 and older machine versions
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20171030' into staging
s390x: fixups for 2.11
- missing \r in the BIOS console output
- CPU type name is now "s390x-cpu"
- fixup for the host-model on z14 and older machine versions
# gpg: Signature made Mon 30 Oct 2017 08:34:15 GMT
# gpg: using RSA key 0x117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB FBCA 117B BC80 B5A6 1C7C
* remotes/borntraeger/tags/s390x-20171030:
s390-*.img: update s390 bios with latest fixes
s390-ccw: print carriage return with new lines
s390x/kvm: use cpu model for gscb on compat machines
target/s390x: change CPU type name to "s390x-cpu"
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Starting a guest with
<os>
<type arch='s390x' machine='s390-ccw-virtio-2.9'>hvm</type>
</os>
<cpu mode='host-model'/>
on an IBM z14 results in
"qemu-system-s390x: Some features requested in the CPU model are not
available in the configuration: gs"
This is because guarded storage is fenced for compat machines that did
not have guarded storage support. While this prevents future migration
abort (by not starting the guest at all), not being able to start a
"host-model" guest is very much unexpected. As it turns out, even if we
would modify libvirt to not expand the cpu model to contain "gs" for
compat machines, it cannot guarantee that a migration will succeed. For
example if the kernel changes its features (or the user has nested=1 on
one host but not on the other) the migration will fail nevertheless. So
instead of fencing "gs" for machines <= 2.9 lets allow it for all
machine types that support the CPU model. This will make "host-model"
runnable all the time, while relying on the CPU model to reject invalid
migration attempts. We also need to change the migration for guarded
storage.
Additional discussions about host-model are still pending but are out
of scope of this patch.
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <Cornelia Huck <cohuck@redhat.com>
Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com>
For now, e.g. host-s390-cpu wasn't exposed to the user. cpu-add, -cpu
and the CPU model qmp interfaces didn't care about the actual type,
as that information was hidden.
This changed with CPU hotplug via device_add. Now the type is visible to
the user. Before we get that supported in a stable version, this is our
last chance to change it.
So change it from "s390-cpu" to "s390x-cpu", to match the architecture
name. Example names are then e.g. z14-s390x-cpu or qemu-s390x-cpu.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171020115803.14093-1-david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
introduce SPARC_CPU_TYPE_NAME macro and use it to
construct cpu type names.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-32-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce TRICORE_CPU_TYPE_NAME macro and use it to construct
cpu type names. While at it move cpu type_infos into one
array and register it directly with type_init_from_array()
instead of custom tricore_cpu_register_types()/cpu_register()
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-30-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new UNICORE32_CPU_TYPE_NAME to compose CPU type
name and get rid of intermediate
UniCore32CPUInfo/uc32_cpu_register_types()
which is replaced by static TypeInfo array and
type_init_from_array()
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-28-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new XTENSA_CPU_TYPE_NAME to compose CPU type name
to bring xtensa in line with all other targets that
will similar macro.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-25-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
the field contains upper-cased cpu model name and is used
for printing supported cpu model names for '-cpu help'.
Considering that cpu model lookup in superh_cpu_class_by_name()
is case-insensitive, we can drop upper-casing when
printing supported cpus list and use cpu type directly
to do the same by cutting out SUPERH_CPU_TYPE_SUFFIX from
typename.
It allows to remove SuperHCPUClass::name, which practically
duplicates names defined by TYPE_SH*_CPU definitions and
simplify sh*_class_init()/SuperHCPUClass a bit.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-24-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
currently for sh4 cpu_model argument for '-cpu' option
could be either 'cpu model' name or cpu_typename.
however typically '-cpu' takes 'cpu model' name and
cpu type for sh4 target isn't advertised publicly
('-cpu help' prints only 'cpu model' names) so we
shouldn't care about this use case (it's more of a bug).
1. Drop '-cpu cpu_typename' to align with the rest of
targets.
2. Compose searched for typename from cpu model and use
it with object_class_by_name() directly instead of
over-complicated
object_class_get_list()
g_slist_find_custom() + superh_cpu_name_compare()
With #1 droped, #2 could be used for both lookups which
simplifies superh_cpu_class_by_name() quite a bit.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-23-git-send-email-imammedo@redhat.com>
[ehabkost: Include fixup sent by Igor]
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce SUPERH_CPU_TYPE_NAME macro and use it to construct
cpu type names. While at it move cpu type_infos into one
array and register it directly with type_init_from_array()
instead of custom superh_cpu_register_types()
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-22-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new OPENRISC_CPU_TYPE_NAME to compose CPU type name and get
rid of intermediate OpenRISCCPUInfo/openrisc_cpu_register_types()
which is replaced by static TypeInfo array.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-18-git-send-email-imammedo@redhat.com>
Acked-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce MOXIE_CPU_TYPE_NAME macro and consistently use it
to construct cpu type names. While at it replace dynamic
cpu type name composition with static data.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-16-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
It 'works' with default CPU only because of bug in
moxie_cpu_class_by_name() where it treats cpu_model
as type name and default cpu_model also happens to be
type name. But specifying explicitly cpu on CLI,
ex: '-cpu MoxieLite', makes QEMU fail since
moxie_cpu_class_by_name() doesn't traslate cpu_model
to cpu type and fails to find corresponding object class.
Fix moxie_cpu_class_by_name() to do proper
cpu_model -> cpu type
translation and fix default cpu_model to be cpu_model
instead of being typename.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-15-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new M68K_CPU_TYPE_NAME to compose CPU type names
and get rid of intermediate M68kCPUInfo/register_cpu_type()
which is replaced by static TypeInfo array.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1507211474-188400-12-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce LM32_CPU_TYPE_NAME macro and consistently use it
to construct cpu type names. While at it replace dynamic
cpu type name composition with static data.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Michael Walle <michael@walle.cc>
Message-Id: <1507211474-188400-9-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
replace ambiguous TYPE macro with a new CRIS_CPU_TYPE_NAME
and use it consistently in the code.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1507211474-188400-7-git-send-email-imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Introduce ALPHA_CPU_TYPE_NAME macro to replace rather ununique
TYPE macro that alpha uses. With new macro it will follow
the same naming convention as other targets.
While at it put scattered TypeInfo into one array which places
type desriptions at one place and reduces code a bit.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-5-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Now that every target is using the disas_set_info hook,
the flags argument is unused. Remove it.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The Capstone disassembler has its own big-endian fixup.
Doing this twice does not work, of course. Move our current
fixup from target/arm/cpu.c to disas/arm.c.
This makes read_memory_inner_func unused and can be removed.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This is identical for each target. So, move the initialization to
common code. Move the variable itself out of tcg_ctx and name it
cpu_env to minimize changes within targets.
This also means we can remove tcg_global_reg_new_{ptr,i32,i64},
since there are no longer global-register temps created by targets.
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
