Set per_address and ilen in per_ifetch; this is valid for
all PER exceptions and will last until the end of the
instruction. Therefore we don't need to give the same
data to per_check_exception.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240502054417.234340-13-richard.henderson@linaro.org>
[thuth: Silence checkpatch.pl errors]
Signed-off-by: Thomas Huth <thuth@redhat.com>
At this point the instruction is complete and there's nothing
left to do but raise the exception. With this change we need
not make two helper calls for this event.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240502054417.234340-11-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Drop from argument, since gbea has always been updated with
this address. Add ilen argument for setting int_pgm_ilen.
Use update_cc_op before calling per_branch.
By raising the exception here, we need not call
per_check_exception later, which means we can clean up the
normal non-exception branch path.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240502054417.234340-10-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Record successful-branching, instruction-fetching, and
store-using-real-address. The other PER bits are not used
during translation. Having checked these at translation time,
we can remove runtime tests from the helpers.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240502054417.234340-5-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Update from the PoO 14th edition.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240502054417.234340-4-richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Using exception unwind via tcg_s390_program_interrupt,
we discard the current value of psw.addr, which discards
the result of a branch.
Pass in the address of the next instruction, which may
not be sequential. Pass in ilen, which we would have
gotten from unwind and is passed to the exception handler.
Sync cc_op before the call, which we would have gotten
from unwind.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240502054417.234340-2-richard.henderson@linaro.org>
[thuth: Silence checkpatch.pl errors]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Mechanical patch produced running the command documented
in scripts/coccinelle/cpu_env.cocci_template header.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240129164514.73104-25-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The Big QEMU Lock (BQL) has many names and they are confusing. The
actual QemuMutex variable is called qemu_global_mutex but it's commonly
referred to as the BQL in discussions and some code comments. The
locking APIs, however, are called qemu_mutex_lock_iothread() and
qemu_mutex_unlock_iothread().
The "iothread" name is historic and comes from when the main thread was
split into into KVM vcpu threads and the "iothread" (now called the main
loop thread). I have contributed to the confusion myself by introducing
a separate --object iothread, a separate concept unrelated to the BQL.
The "iothread" name is no longer appropriate for the BQL. Rename the
locking APIs to:
- void bql_lock(void)
- void bql_unlock(void)
- bool bql_locked(void)
There are more APIs with "iothread" in their names. Subsequent patches
will rename them. There are also comments and documentation that will be
updated in later patches.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Acked-by: Fabiano Rosas <farosas@suse.de>
Acked-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Peter Xu <peterx@redhat.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Acked-by: Hyman Huang <yong.huang@smartx.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20240102153529.486531-2-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
"hw/s390x/sclp.h" is a header used by target-agnostic objects
(such hw/char/sclpconsole[-lm].c), thus can not use target-specific
types, such CPUS390XState.
Have sclp_service_call[_protected]() take a S390CPU pointer, which
is target-agnostic.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20231106114500.5269-3-philmd@linaro.org>
"hw/s390x/css.h" is a header used by target-agnostic objects
(such hw/s390x/virtio-ccw-gpu.c), thus can not use target-specific
types, such CPUS390XState.
Have css_do_sic() take S390CPU a pointer, which is target-agnostic.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20231106114500.5269-2-philmd@linaro.org>
"qemu/main-loop.h" declares functions related to QEMU's
main loop mutex, which these files don't access. Remove
the unused "qemu/main-loop.h" header.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230828221314.18435-8-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217152454.96388-5-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Fix typos (discovered with the 'codespell' utility).
Note: Though "migrateable" still seems to be a valid spelling, we change
it to "migratable" since this is the way more common spelling here.
Message-Id: <20221111182828.282251-1-thuth@redhat.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
According to the architecture, SET PREFIX must try to access the new
prefix area and recognize an addressing exception if the area is not
accessible.
For qemu this check prevents a crash in cpu_map_lowcore after an
inaccessible prefix area has been set.
Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20220630094340.3646279-1-scgl@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We not only invalidate the translation of the range 0x0-0x2000, we also
invalidate the translation of the new prefix range and the translation
of the old prefix range -- because real2abs would return different
results for all of these ranges when changing the prefix location.
This fixes the kvm-unit-tests "edat" test that just hangs before this
patch because we end up clearing the new prefix area instead of the old
prefix area.
While at it, let's not do anything in case the prefix doesn't change.
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: qemu-s390x@nongnu.org
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20210805125938.74034-1-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
move everything related to translate, as well as HELPER code in tcg/
mmu_helper.c stays put for now, as it contains both TCG and KVM code.
After the reshuffling, update MAINTAINERS accordingly.
Make use of the new directory:
target/s390x/tcg/
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Cho, Yu-Chen <acho@suse.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210707105324.23400-8-acho@suse.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
