include: Remove 'exec/exec-all.h'

"exec/exec-all.h" is now fully empty, let's remove it.

Mechanical change running:

$ sed -i '/exec\/exec-all.h/d' $(git grep -wl exec/exec-all.h)

Signed-off-by:

include: Remove 'exec/exec-all.h'

"exec/exec-all.h" is now fully empty, let's remove it.

Mechanical change running:

$ sed -i '/exec\/exec-all.h/d' $(git grep -wl exec/exec-all.h)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250424202412.91612-14-philmd@linaro.org>

show more ...

exec: Restrict 'cpu_ldst.h' to accel/tcg/

Mechanical change using:

$ sed -i -e 's,exec/cpu_ldst,accel/tcg/cpu-ldst,' \
$(git grep -l exec/cpu_ldst.h)

Signed-off-by: Philippe Mathieu-Daud

exec: Restrict 'cpu_ldst.h' to accel/tcg/

Mechanical change using:

$ sed -i -e 's,exec/cpu_ldst,accel/tcg/cpu-ldst,' \
$(git grep -l exec/cpu_ldst.h)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

exec/cpu-all: remove exec/target_page include

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Hende

exec/cpu-all: remove exec/target_page include

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

exec: Declare tlb_flush*() in 'exec/cputlb.h'

Move CPU TLB related methods to "exec/cputlb.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.hend

exec: Declare tlb_flush*() in 'exec/cputlb.h'

Move CPU TLB related methods to "exec/cputlb.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20241114011310.3615-19-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge tag 'mem-2024-12-21' of https://github.com/davidhildenbrand/qemu into staging

Hi,

"Host Memory Backends" and "Memory devices" queue ("mem"):
- Fixup handling of virtio-mem unplug during syste

Merge tag 'mem-2024-12-21' of https://github.com/davidhildenbrand/qemu into staging

Hi,

"Host Memory Backends" and "Memory devices" queue ("mem"):
- Fixup handling of virtio-mem unplug during system resets, as
preparation for s390x support (especially kdump in the Linux guest)
- virtio-mem support for s390x

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# gpg: Signature made Sat 21 Dec 2024 14:17:18 EST
# gpg: using RSA key 1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A
# gpg: issuer "david@redhat.com"
# gpg: Good signature from "David Hildenbrand <david@redhat.com>" [unknown]
# gpg: aka "David Hildenbrand <davidhildenbrand@gmail.com>" [full]
# gpg: aka "David Hildenbrand <hildenbr@in.tum.de>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 1BD9 CAAD 735C 4C3A 460D FCCA 4DDE 10F7 00FF 835A

* tag 'mem-2024-12-21' of https://github.com/davidhildenbrand/qemu:
s390x: virtio-mem support
s390x/virtio-ccw: add support for virtio based memory devices
s390x: remember the maximum page size
s390x/pv: prepare for memory devices
s390x/s390-virtio-ccw: prepare for memory devices
s390x/s390-skeys: prepare for memory devices
s390x/s390-stattrib-kvm: prepare for memory devices and sparse memory layouts
s390x/s390-hypercall: introduce DIAG500 STORAGE_LIMIT
s390x: introduce s390_get_memory_limit()
s390x/s390-virtio-ccw: move setting the maximum guest size from sclp to machine code
s390x: rename s390-virtio-hcall* to s390-hypercall*
s390x/s390-virtio-hcall: prepare for more diag500 hypercalls
s390x/s390-virtio-hcall: remove hypercall registration mechanism
s390x/s390-virtio-ccw: don't crash on weird RAM sizes
virtio-mem: unplug memory only during system resets, not device resets

Conflicts:
- hw/s390x/s390-stattrib-kvm.c
sysemu/ -> system/ header rename conflict.
- hw/s390x/virtio-ccw-mem.c
Make Property array const and removed DEFINE_PROP_END_OF_LIST() to
conform to the latest conventions.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

s390x: rename s390-virtio-hcall* to s390-hypercall*

Let's make it clearer that we are talking about general
QEMU/KVM-specific hypercalls.

Message-ID: <20241219144115.2820241-5-david@redhat.com>
Ack

s390x: rename s390-virtio-hcall* to s390-hypercall*

Let's make it clearer that we are talking about general
QEMU/KVM-specific hypercalls.

Message-ID: <20241219144115.2820241-5-david@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>

show more ...

s390x/s390-virtio-hcall: prepare for more diag500 hypercalls

Let's generalize, abstracting the virtio bits. diag500 is now a generic
hypercall to handle QEMU/KVM specific things. Explicitly specify

s390x/s390-virtio-hcall: prepare for more diag500 hypercalls

Let's generalize, abstracting the virtio bits. diag500 is now a generic
hypercall to handle QEMU/KVM specific things. Explicitly specify all
already defined subcodes, including legacy ones (so we know what we can
use for new hypercalls).

Move the PGM_SPECIFICATION injection into the renamed function
handle_diag_500(), so we can turn it into a void function.

We'll rename the files separately, so git properly detects the rename.

Message-ID: <20241219144115.2820241-4-david@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>

show more ...

s390x/s390-virtio-hcall: remove hypercall registration mechanism

Nowadays, we only have a single machine type in QEMU, everything is based
on virtio-ccw and the traditional virtio machine does no lo

s390x/s390-virtio-hcall: remove hypercall registration mechanism

Nowadays, we only have a single machine type in QEMU, everything is based
on virtio-ccw and the traditional virtio machine does no longer exist. No
need to dynamically register diag500 handlers. Move the two existing
handlers into s390-virtio-hcall.c.

Message-ID: <20241219144115.2820241-3-david@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: David Hildenbrand <david@redhat.com>

show more ...

include: Rename sysemu/ -> system/

Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.

Files renamed man

include: Rename sysemu/ -> system/

Headers in include/sysemu/ are not only related to system
*emulation*, they are also used by virtualization. Rename
as system/ which is clearer.

Files renamed manually then mechanical change using sed tool.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20241203172445.28576-1-philmd@linaro.org>

show more ...

target/s390x: Simplify per_ifetch, per_check_exception

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'

target/s390x: Simplify per_ifetch, per_check_exception

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>

show more ...

target/s390x: Raise exception from per_store_real

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 call

target/s390x: Raise exception from per_store_real

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>

show more ...

target/s390x: Raise exception from helper_per_branch

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 ca

target/s390x: Raise exception from helper_per_branch

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>

show more ...

target/s390x: Record separate PER bits in TB flags

Record successful-branching, instruction-fetching, and
store-using-real-address. The other PER bits are not used
during translation. Having check

target/s390x: Record separate PER bits in TB flags

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>

show more ...

target/s390x: Update CR9 bits

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 Leoshke

target/s390x: Update CR9 bits

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>

show more ...

target/s390x: Do not use unwind for per_check_exception

Using exception unwind via tcg_s390_program_interrupt,
we discard the current value of psw.addr, which discards
the result of a branch.

Pass

target/s390x: Do not use unwind for per_check_exception

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>

show more ...

target/s390x: Prefer fast cpu_env() over slower CPU QOM cast macro

Mechanical patch produced running the command documented
in scripts/coccinelle/cpu_env.cocci_template header.

Signed-off-by: Phili

target/s390x: Prefer fast cpu_env() over slower CPU QOM cast macro

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>

show more ...

system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()

The Big QEMU Lock (BQL) has many names and they are confusing. The
actual QemuMutex variable is called qemu_global_mutex but it's commonl

system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()

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>

show more ...

hw/s390x/sclp: Have sclp_service_call[_protected]() take S390CPU*

"hw/s390x/sclp.h" is a header used by target-agnostic objects
(such hw/char/sclpconsole[-lm].c), thus can not use target-specific
ty

hw/s390x/sclp: Have sclp_service_call[_protected]() take S390CPU*

"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>

show more ...

hw/s390x/css: Have css_do_sic() take S390CPU instead of CPUS390XState

"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

hw/s390x/css: Have css_do_sic() take S390CPU instead of CPUS390XState

"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>

show more ...

target/helpers: Remove unnecessary 'qemu/main-loop.h' header

"qemu/main-loop.h" declares functions related to QEMU's
main loop mutex, which these files don't access. Remove
the unused "qemu/main-loo

target/helpers: Remove unnecessary 'qemu/main-loop.h' header

"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>

show more ...

target/s390x/tcg/misc_helper: Remove unused "memory.h" include

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221217152454.96388-5-philmd@linaro.org>
Reviewed-by: Thomas Hu

target/s390x/tcg/misc_helper: Remove unused "memory.h" include

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>

show more ...

s390x: Fix spelling errors

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

s390x: Fix spelling errors

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>

show more ...

target/s390x/tcg: SPX: check validity of new prefix

According to the architecture, SET PREFIX must try to access the new
prefix area and recognize an addressing exception if the area is not
accessib

target/s390x/tcg: SPX: check validity of new prefix

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>

show more ...

s390x/tcg: fix and optimize SPX (SET PREFIX)

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

s390x/tcg: fix and optimize SPX (SET PREFIX)

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>

show more ...

target/s390x: start moving TCG-only code to tcg/

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 th

target/s390x: start moving TCG-only code to tcg/

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>

show more ...