Otherwise TCG would assume the register that holds t1 would be constant
and reuse whenever it needs the value within it.
Cc: qemu-stable@nongnu.org
Fixes: f1ea739bd5 ("target/s390x: Use tcg_constant_* in local contexts")
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[iii: Adjust a newline and capitalization, add tags]
Signed-off-by: Ido Plat <ido.plat@ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20240318202722.20675-1-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
some users were confused by this message showing under TCG:
Selected CPU generation is too new. Maximum supported model
in the configuration: 'xyz'
Clarify that the maximum can depend on the accel, and add a
hint to try a different one.
Also add a hint for features mismatch to suggest trying
different accel, QEMU and kernel versions.
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Message-ID: <20240314213746.27163-1-cfontana@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
query-cpu-model-comparison, query-cpu-model-baseline, and
query-cpu-model-expansion take CpuModelInfo arguments. Errors in
@props members of these arguments are reported for 'props', without
further context. For instance, s390x rejects
{"execute": "query-cpu-model-comparison", "arguments": {"modela": {"name": "z13", "props": {}}, "modelb": {"name": "z14", "props": []}}}
with
{"error": {"class": "GenericError", "desc": "Invalid parameter type for 'props', expected: object"}}
This is unusual; the common QAPI unmarshaling machinery would complain
about 'modelb.props'. Our hand-written code to visit the @props
member neglects to provide the context.
Tweak it so it provides it. The command above now fails with
{"error": {"class": "GenericError", "desc": "Invalid parameter type for 'modelb.props', expected: dict"}}
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240305145919.2186971-4-armbru@redhat.com>
Acked-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
CpuModelInfo member @props is semantically a mapping from name to
value, and syntactically a JSON object on the wire. This translates
to QDict in C. Since the QAPI schema language lacks the means to
express 'object', we use 'any' instead. This is QObject in C.
Commands taking a CpuModelInfo argument need to check the QObject is a
QDict.
For arm, riscv, and s390x, the code checks right before passing the
QObject to visit_start_struct(). visit_start_struct() then checks
again.
Delete the first check.
The error message for @props that are not an object changes slightly
to the the message we get for this kind of type error in other
contexts. Minor improvement.
Additionally, error messages about members of @props now refer to
'props.prop-name' instead of just 'prop-name'. Another minor
improvement.
Both changes are visible in tests/qtest/arm-cpu-features.c.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240305145919.2186971-2-armbru@redhat.com>
Acked-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
[Drop #include now superfluous]
As the comment in qapi/error, passing @errp to error_prepend() requires
ERRP_GUARD():
* = Why, when and how to use ERRP_GUARD() =
*
* Without ERRP_GUARD(), use of the @errp parameter is restricted:
...
* - It should not be passed to error_prepend(), error_vprepend() or
* error_append_hint(), because that doesn't work with &error_fatal.
* ERRP_GUARD() lifts these restrictions.
*
* To use ERRP_GUARD(), add it right at the beginning of the function.
* @errp can then be used without worrying about the argument being
* NULL or &error_fatal.
ERRP_GUARD() could avoid the case when @errp is &error_fatal, the user
can't see this additional information, because exit() happens in
error_setg earlier than information is added [1].
In target/s390x/cpu_models.c, there are 2 functions passing @errp to
error_prepend() without ERRP_GUARD():
- check_compatibility()
- s390_realize_cpu_model()
Though both their @errp parameters point to their callers' local @err
virables and don't cause the issue as [1] said, to follow the
requirement of @errp, also add missing ERRP_GUARD() at their beginning.
[1]: Issue description in the commit message of commit ae7c80a7bd
("error: New macro ERRP_GUARD()").
Cc: David Hildenbrand <david@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: qemu-s390x@nongnu.org
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20240311033822.3142585-30-zhao1.liu@linux.intel.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
GDBFeature has the num_regs member so use it where applicable to
remove magic numbers.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20231213-gdb-v17-8-777047380591@daynix.com>
[AJB: remove core reg check from microblaze read reg]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-13-alex.bennee@linaro.org>
Align the parameters of gdb_get_reg_cb and gdb_set_reg_cb with the
gdb_read_register and gdb_write_register members of CPUClass to allow
to unify the logic to access registers of the core and coprocessors
in the future.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231213-gdb-v17-6-777047380591@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-11-alex.bennee@linaro.org>
This is a tree-wide change to introduce GDBFeature parameter to
gdb_register_coprocessor(). The new parameter just replaces num_regs
and xml parameters for now. GDBFeature will be utilized to simplify XML
lookup in a following change.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231213-gdb-v17-4-777047380591@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-9-alex.bennee@linaro.org>
Correct typos automatically found with the `typos` tool
<https://crates.io/crates/typos>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
target/alpha: Use TCG_COND_TST{EQ,NE}
target/m68k: Use TCG_COND_TST{EQ,NE} in gen_fcc_cond
target/sparc: Use TCG_COND_TSTEQ in gen_op_mulscc
target/s390x: Use TCG_COND_TSTNE for CC_OP_{TM,ICM}
target/s390x: Improve general case of disas_jcc
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Merge tag 'pull-tcg-20240205-2' of https://gitlab.com/rth7680/qemu into staging
tcg: Introduce TCG_COND_TST{EQ,NE}
target/alpha: Use TCG_COND_TST{EQ,NE}
target/m68k: Use TCG_COND_TST{EQ,NE} in gen_fcc_cond
target/sparc: Use TCG_COND_TSTEQ in gen_op_mulscc
target/s390x: Use TCG_COND_TSTNE for CC_OP_{TM,ICM}
target/s390x: Improve general case of disas_jcc
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# gpg: Signature made Tue 06 Feb 2024 03:19:12 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* tag 'pull-tcg-20240205-2' of https://gitlab.com/rth7680/qemu: (39 commits)
tcg/tci: Support TCG_COND_TST{EQ,NE}
tcg/s390x: Support TCG_COND_TST{EQ,NE}
tcg/s390x: Add TCG_CT_CONST_CMP
tcg/s390x: Split constraint A into J+U
tcg/ppc: Support TCG_COND_TST{EQ,NE}
tcg/ppc: Add TCG_CT_CONST_CMP
tcg/ppc: Tidy up tcg_target_const_match
tcg/ppc: Use cr0 in tcg_to_bc and tcg_to_isel
tcg/ppc: Sink tcg_to_bc usage into tcg_out_bc
tcg/sparc64: Support TCG_COND_TST{EQ,NE}
tcg/sparc64: Pass TCGCond to tcg_out_cmp
tcg/sparc64: Hoist read of tcg_cond_to_rcond
tcg/i386: Use TEST r,r to test 8/16/32 bits
tcg/i386: Improve TSTNE/TESTEQ vs powers of two
tcg/i386: Support TCG_COND_TST{EQ,NE}
tcg/i386: Move tcg_cond_to_jcc[] into tcg_out_cmp
tcg/i386: Pass x86 condition codes to tcg_out_cmov
tcg/arm: Support TCG_COND_TST{EQ,NE}
tcg/arm: Split out tcg_out_cmp()
tcg/aarch64: Generate CBNZ for TSTNE of UINT32_MAX
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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>
Convert to Binary - counterparts of the already implemented Convert
to Decimal (CVD*) instructions.
Example from the Principles of Operation: 25594C becomes 63FA.
Co-developed-by: Pavel Zbitskiy <pavel.zbitskiy@gmail.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20240205205830.6425-3-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
CVDG is the same as CVD, except that it converts 64 bits into 128,
rather than 32 into 64. Create a new helper, which uses Int128
wrappers.
Reported-by: Ido Plat <Ido.Plat@ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240205205830.6425-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Avoid code duplication by handling 7 of the 14 cases
by inverting the test for the other 7 cases.
Use TCG_COND_TSTNE for cc in {1,3}.
Use (cc - 1) <= 1 for cc in {1,2}.
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
These are all test-and-compare type instructions.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For user-only mode, use MMU_USER_IDX.
For system mode, use CPUClass.mmu_index.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
QEMU coding style recommends using structure typedefs.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Makes gen_intermediate_code() signature target agnostic so the function
can be called from accel/tcg/translate-all.c without target specifics.
Signed-off-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20240119144024.14289-9-anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
LAE should set the access register corresponding to the first operand,
instead, it always modifies access register 1.
Co-developed-by: Ido Plat <Ido.Plat@ibm.com>
Cc: qemu-stable@nongnu.org
Fixes: a1c7610a68 ("target-s390x: implement LAY and LAEY instructions")
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-ID: <20240111092328.929421-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
It's a common scenario to copy guest images from one host to another
to run the guest on the other machine. This (of course) does not work
with "secure execution" guests since they are encrypted with one certain
host key. However, if you still (accidentally) do it, you only get a
very user-unfriendly error message that looks like this:
qemu-system-s390x: KVM PV command 2 (KVM_PV_SET_SEC_PARMS) failed:
header rc 108 rrc 5 IOCTL rc: -22
Let's provide at least a somewhat nicer hint to the users so that they
are able to figure out what might have gone wrong.
Buglink: https://issues.redhat.com/browse/RHEL-18212
Message-ID: <20240110142916.850605-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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>
PV dumps block vcpu runs until dump end is reached. If there's an
error between PV dump init and PV dump end the vm will never be able
to run again. One example of such an error is insufficient disk space
for the dump file.
Let's add a cleanup function that tries to do a dump end. The dump
completion data is discarded but there's no point in writing it to a
file anyway if there's a possibility that other PV dump data is
missing.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20231109120443.185979-4-frankja@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
dump_state_prepare() now sets the function pointers to NULL so we only
need to touch them if we're going to use them.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231109120443.185979-2-frankja@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
* Fix condition code problem in the CLC and LAALG instruction
* Fix ordering of the new s390x topology list entries
* Add some more files to the MAINTAINERS file
* Allow newer versions of Tesseract in the m68k nextcube test
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Merge tag 'pull-request-2023-11-07' of https://gitlab.com/thuth/qemu into staging
* Fix s390x CPU reconfiguration information in the SCLP facility map
* Fix condition code problem in the CLC and LAALG instruction
* Fix ordering of the new s390x topology list entries
* Add some more files to the MAINTAINERS file
* Allow newer versions of Tesseract in the m68k nextcube test
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# gpg: Signature made Wed 08 Nov 2023 02:30:35 HKT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* tag 'pull-request-2023-11-07' of https://gitlab.com/thuth/qemu:
target/s390x/cpu topology: Fix ordering and creation of TLEs
tests/tcg/s390x: Test ADD LOGICAL WITH CARRY
tests/tcg/s390x: Test LAALG with negative cc_src
target/s390x: Fix LAALG not updating cc_src
tests/tcg/s390x: Test CLC with inaccessible second operand
target/s390x: Fix CLC corrupting cc_src
target/s390x/cpu_models: Use 'first_cpu' in s390_get_feat_block()
s390/sclp: fix SCLP facility map
tests/avocado: Allow newer versions of tesseract in the nextcube test
MAINTAINERS: Add artist.c to the hppa machine section
MAINTAINERS: Add the virtio-gpu documentation to the corresponding section
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In case of horizontal polarization entitlement has no effect on
ordering.
Moreover, since the comparison is used to insert CPUs at the correct
position in the TLE list, this affects the creation of TLEs and now
correctly collapses horizontally polarized CPUs into one TLE.
Fixes: f4f54b582f ("target/s390x/cpu topology: handle STSI(15) and build the SYSIB")
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231027163637.3060537-1-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
LAALG uses op_laa() and wout_addu64(). The latter expects cc_src to be
set, but the former does not do it. This can lead to assertion failures
if something sets cc_src to neither 0 nor 1 before.
Fix by introducing op_laa_addu64(), which sets cc_src, and using it for
LAALG.
Fixes: 4dba4d6fef ("target/s390x: Use atomic operations for LOAD AND OP")
Cc: qemu-stable@nongnu.org
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20231106093605.1349201-4-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
CLC updates cc_src before accessing the second operand; if the latter
is inaccessible, the former ends up containing a bogus value.
Fix by reading cc_src into a temporary first.
Fixes: 4f7403d52b ("target-s390: Convert CLC")
Closes: https://gitlab.com/qemu-project/qemu/-/issues/1865
Cc: qemu-stable@nongnu.org
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20231106093605.1349201-2-iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We already have a global 'first_cpu' variable storing a pointer
to the first CPU, no need to use a static one.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231030093150.65297-1-philmd@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Fix:
hw/core/machine.c:1302:22: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
const CPUArchId *cpus = possible_cpus->cpus;
^
hw/core/numa.c:69:17: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
uint16List *cpus = NULL;
^
hw/acpi/aml-build.c:2005:20: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
CPUArchIdList *cpus = ms->possible_cpus;
^
hw/core/machine-smp.c:77:14: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
unsigned cpus = config->has_cpus ? config->cpus : 0;
^
include/hw/core/cpu.h:589:17: note: previous declaration is here
extern CPUTailQ cpus;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Ani Sinha <anisinha@redhat.com>
Message-Id: <20231010115048.11856-2-philmd@linaro.org>
The OBJECT_DECLARE_CPU_TYPE() macro forward-declares each
ArchCPUClass type. These forward declarations are sufficient
for code in hw/ to use the QOM definitions. No need to expose
these structure definitions. Keep each local to their target/
by moving them to the corresponding "cpu.h" header.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231013140116.255-13-philmd@linaro.org>
"target/s390x/cpu-qom.h" has to be target-agnostic. However, it
currently declares CPUS390XState, which is target-specific.
Move that declaration to "cpu.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20231106114500.5269-5-philmd@linaro.org>
cpu_get_tb_cpu_state() is TCG specific. Another accelerator
calling it would be a bug, so restrict the definition to TCG,
along with "tcg_s390x.h" header inclusion.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20231106114500.5269-4-philmd@linaro.org>
"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>
When CPUArchState* is available (here CPUS390XState*), we
can use the fast env_archcpu() macro to get ArchCPU* (here
S390CPU*). The QOM cast S390_CPU() macro will be slower when
building with --enable-qom-cast-debug.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20231009110239.66778-4-philmd@linaro.org>
Hegerogeneous code needs access to the FOO_CPU_TYPE_NAME()
macro to resolve target CPU types. Move the declaration
(along with the required FOO_CPU_TYPE_SUFFIX) to "cpu-qom.h".
"target/foo/cpu-qom.h" is supposed to be target agnostic
(include-able by any target). Add such mention in the
header.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231013140116.255-7-philmd@linaro.org>
Enforce the style described by commit 067109a11c ("docs/devel:
mention the spacing requirement for QOM"):
The first declaration of a storage or class structure should
always be the parent and leave a visual space between that
declaration and the new code. It is also useful to separate
backing for properties (options driven by the user) and internal
state to make navigation easier.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20231013140116.255-2-philmd@linaro.org>
KVM_SYNC_GPRS, KVM_SYNC_ACRS, KVM_SYNC_CRS and KVM_SYNC_PREFIX are
available since kernel 3.10. Since we already require at least kernel
3.15 in the s390x KVM code, we can also assume that the KVM_CAP_SYNC_REGS
sync code is always possible for these registers, and remove the
related checks and fallbacks via KVM_SET_REGS and KVM_GET_REGS.
Message-ID: <20231011080538.796999-3-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Since we already require at least kernel 3.15 in the s390x KVM code,
we can assume that the KVM_CAP_SYNC_REGS capability is always there.
Thus turn this into a hard requirement now.
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Message-ID: <20231011080538.796999-2-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
S390x provides two more topology attributes, entitlement and dedication.
Let's add these CPU attributes to the QAPI command query-cpu-fast.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-11-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The KVM capability KVM_CAP_S390_CPU_TOPOLOGY is used to
activate the S390_FEAT_CONFIGURATION_TOPOLOGY feature and
the topology facility in the host CPU model for the guest
in the case the topology is available in QEMU and in KVM.
The feature is disabled by default and fenced for SE
(secure execution).
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20231016183925.2384704-9-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
When the host supports the CPU topology facility, the PTF
instruction with function code 2 is interpreted by the SIE,
provided that the userland hypervisor activates the interpretation
by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
The PTF instructions with function code 0 and 1 are intercepted
and must be emulated by the userland hypervisor.
During RESET all CPU of the configuration are placed in
horizontal polarity.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-8-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
During a subsystem reset the Topology-Change-Report is cleared
by the machine.
Let's ask KVM to clear the Modified Topology Change Report (MTCR)
bit of the SCA in the case of a subsystem reset.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-7-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
On interception of STSI(15.1.x) the System Information Block
(SYSIB) is built from the list of pre-ordered topology entries.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-5-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
S390 adds two new SMP levels, drawers and books to the CPU
topology.
S390 CPUs have specific topology features like dedication and
entitlement. These indicate to the guest information on host
vCPU scheduling and help the guest make better scheduling decisions.
Add the new levels to the relevant QAPI structs.
Add all the supported topology levels, dedication and entitlement
as properties to S390 CPUs.
Create machine-common.json so we can later include it in
machine-target.json also.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-3-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
All implementations of gdb_arch_name() returns dynamic duplicates of
static strings. It's also unlikely that there will be an implementation
of gdb_arch_name() that returns a truly dynamic value due to the nature
of the function returning a well-known identifiers. Qualify the value
gdb_arch_name() with const and make all of its implementations return
static strings.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20230912224107.29669-8-akihiko.odaki@daynix.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20231009164104.369749-15-alex.bennee@linaro.org>
