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1107 commits

Author SHA1 Message Date
Stefan Hajnoczi
98721058d6 * target/i386/kvm: Intel TDX support
* target/i386/emulate: more lflags cleanups
 * meson: remove need for explicit listing of dependencies in hw_common_arch and
   target_common_arch
 * rust: small fixes
 * hpet: Reorganize register decoding to be more similar to Rust code
 * target/i386: fixes for AMD models
 * target/i386: new EPYC-Turin CPU model
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386/kvm: Intel TDX support
* target/i386/emulate: more lflags cleanups
* meson: remove need for explicit listing of dependencies in hw_common_arch and
  target_common_arch
* rust: small fixes
* hpet: Reorganize register decoding to be more similar to Rust code
* target/i386: fixes for AMD models
* target/i386: new EPYC-Turin CPU model

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# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (77 commits)
  target/i386/tcg/helper-tcg: fix file references in comments
  target/i386: Add support for EPYC-Turin model
  target/i386: Update EPYC-Genoa for Cache property, perfmon-v2, RAS and SVM feature bits
  target/i386: Add couple of feature bits in CPUID_Fn80000021_EAX
  target/i386: Update EPYC-Milan CPU model for Cache property, RAS, SVM feature bits
  target/i386: Update EPYC-Rome CPU model for Cache property, RAS, SVM feature bits
  target/i386: Update EPYC CPU model for Cache property, RAS, SVM feature bits
  rust: make declaration of dependent crates more consistent
  docs: Add TDX documentation
  i386/tdx: Validate phys_bits against host value
  i386/tdx: Make invtsc default on
  i386/tdx: Don't treat SYSCALL as unavailable
  i386/tdx: Fetch and validate CPUID of TD guest
  target/i386: Print CPUID subleaf info for unsupported feature
  i386: Remove unused parameter "uint32_t bit" in feature_word_description()
  i386/cgs: Introduce x86_confidential_guest_check_features()
  i386/tdx: Define supported KVM features for TDX
  i386/tdx: Add XFD to supported bit of TDX
  i386/tdx: Add supported CPUID bits relates to XFAM
  i386/tdx: Add supported CPUID bits related to TD Attributes
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-05-30 11:41:07 -04:00
Stefan Hajnoczi
d2e9b78162 QAPI patches patches for 2025-05-28
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Merge tag 'pull-qapi-2025-05-28' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2025-05-28

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# gpg: Signature made Wed 28 May 2025 14:08:54 EDT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2025-05-28' of https://repo.or.cz/qemu/armbru:
  qapi: use imperative style in documentation
  qapi: make all generated files common
  qapi: remove qapi_specific_outputs from meson.build
  qapi: make s390x specific CPU commands unconditionally available
  qapi: make most CPU commands unconditionally available
  qapi: Make CpuModelExpansionInfo::deprecated-props optional and generic
  qapi: remove the misc-target.json file
  qapi: make Xen event commands unconditionally available
  qapi: make SGX commands unconditionally available
  qapi: expose query-gic-capability command unconditionally
  qapi: make SEV commands unconditionally available
  qapi: expand docs for SEV commands
  qapi: expose rtc-reset-reinjection command unconditionally

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-05-29 08:36:01 -04:00
Xiaoyao Li
a668268dc0 kvm: Introduce kvm_arch_pre_create_vcpu()
Introduce kvm_arch_pre_create_vcpu(), to perform arch-dependent
work prior to create any vcpu. This is for i386 TDX because it needs
call TDX_INIT_VM before creating any vcpu.

The specific implementation for i386 will be added in the future patch.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250508150002.689633-8-xiaoyao.li@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-05-28 19:01:40 +02:00
Daniel P. Berrangé
d6758495d8 qapi: make most CPU commands unconditionally available
This removes the TARGET_* conditions from all the CPU commands
that are conceptually target independent. Top level stubs are
provided to cope with targets which do not currently implement
all of the commands. Adjust the doc comments accordingly.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20250522190542.588267-10-pierrick.bouvier@linaro.org>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
2025-05-28 18:55:50 +02:00
Richard Henderson
396c12d00e target/mips: Fill in TCGCPUOps.pointer_wrap
Check 32 vs 64-bit addressing state.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-05-28 08:08:48 +01:00
Richard Henderson
c37f8978d9 accel/tcg: Move cpu_get_tb_cpu_state to TCGCPUOps
Move the global function name to a hook on TCGCPUOps.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-30 12:45:05 -07:00
Richard Henderson
4759aae432 accel/tcg: Return TCGTBCPUState from cpu_get_tb_cpu_state
Combine 3 different pointer returns into one structure return.

Include a cflags field in TCGTBCPUState, not filled in by
cpu_get_tb_cpu_state, but used by all callers.  This fills
a hole in the structure and is useful in some subroutines.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-30 12:45:05 -07:00
Richard Henderson
a59a876999 accel/tcg: Hoist cpu_get_tb_cpu_state decl to accl/tcg/cpu-ops.h
For some targets, simply remove the local definition.
For other targets, move the inline definition out of line.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-30 12:45:05 -07:00
Richard Henderson
9181ab4528 accel/tcg: Introduce TCGCPUOps.cpu_exec_reset
Initialize all instances with cpu_reset(), so that there
is no functional change.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-30 12:45:05 -07:00
Philippe Mathieu-Daudé
84307cd602 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>
2025-04-30 12:45:05 -07:00
Philippe Mathieu-Daudé
fe1a3ace13 accel/tcg: Extract probe API out of 'exec/exec-all.h'
Declare probe methods in "accel/tcg/probe.h" to emphasize
they are specific to TCG accelerator.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
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: <20250424202412.91612-13-philmd@linaro.org>
2025-04-30 12:45:05 -07:00
Philippe Mathieu-Daudé
33fa8f02a9 target/mips: Check CPU endianness at runtime using env_is_bigendian()
Since CPU endianness can be toggled at runtime before resetting,
checking the endianness at build time preprocessing the
TARGET_BIG_ENDIAN definition isn't correct. We have to call
mips_env_is_bigendian() to get the CPU endianness at runtime.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250417131004.47205-4-philmd@linaro.org>
2025-04-25 17:09:58 +02:00
Hauke Mehrtens
d4a785ba30 target/mips: Fix MIPS16e translation
Fix a wrong conversion to gen_op_addr_addi(). The framesize should be
added like it was done before.

This bug broke booting OpenWrt MIPS32 BE malta Linux system images
generated by OpenWrt.

Cc: qemu-stable@nongnu.org
Fixes: d0b24b7f50 ("target/mips: Use gen_op_addr_addi() when possible")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250412194003.181411-1-hauke@hauke-m.de>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2025-04-25 17:00:42 +02:00
Philippe Mathieu-Daudé
b282b859cf qom: Constify TypeInfo::class_data
All callers now correctly expect a const class data.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250424194905.82506-5-philmd@linaro.org>
2025-04-25 17:00:41 +02:00
Philippe Mathieu-Daudé
12d1a768bd qom: Have class_init() take a const data argument
Mechanical change using gsed, then style manually adapted
to pass checkpatch.pl script.

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: <20250424194905.82506-4-philmd@linaro.org>
2025-04-25 17:00:41 +02:00
Stefan Hajnoczi
019fbfa4bc Miscellaneous patches for 2025-04-24
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Merge tag 'pull-misc-2025-04-24' of https://repo.or.cz/qemu/armbru into staging

Miscellaneous patches for 2025-04-24

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# gpg: Signature made Thu 24 Apr 2025 03:52:54 EDT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-misc-2025-04-24' of https://repo.or.cz/qemu/armbru:
  cleanup: Drop pointless label at end of function
  cleanup: Drop pointless return at end of function
  cleanup: Re-run return_directly.cocci

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-04-24 13:44:57 -04:00
Markus Armbruster
8a2b516ba2 cleanup: Drop pointless return at end of function
A few functions now end with a label.  The next commit will clean them
up.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250407082643.2310002-3-armbru@redhat.com>
[Straightforward conflict with commit 988ad4cceb (hw/loongarch/virt:
Fix cpuslot::cpu set at last in virt_cpu_plug()) resolved]
2025-04-24 09:33:42 +02:00
Philippe Mathieu-Daudé
a3d40b5eff tcg: Convert TARGET_SUPPORTS_MTTCG to TCGCPUOps::mttcg_supported field
Instead of having a compile-time TARGET_SUPPORTS_MTTCG definition,
have each target set the 'mttcg_supported' field in the TCGCPUOps
structure.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250405161320.76854-17-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 15:07:32 -07:00
Philippe Mathieu-Daudé
8201f1a29c tcg: Remove the TCG_GUEST_DEFAULT_MO definition globally
By directly using TCGCPUOps::guest_default_memory_order,
we don't need the TCG_GUEST_DEFAULT_MO definition anymore.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 15:07:32 -07:00
Philippe Mathieu-Daudé
04583ce7e0 tcg: Define guest_default_memory_order in TCGCPUOps
Add the TCGCPUOps::guest_default_memory_order field and have
each target initialize it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 15:07:32 -07:00
Philippe Mathieu-Daudé
42fa9665e5 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>
2025-04-23 15:07:32 -07:00
Philippe Mathieu-Daudé
21d41c566d tcg: Declare TARGET_INSN_START_EXTRA_WORDS in 'cpu-param.h'
To avoid including the huge "cpu.h" for a simple definition,
move TARGET_INSN_START_EXTRA_WORDS to "cpu-param.h".

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 15:07:32 -07:00
Pierrick Bouvier
0df783b2fb exec/cpu-all: remove this header
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>
Message-ID: <20250325045915.994760-16-pierrick.bouvier@linaro.org>
2025-04-23 15:04:57 -07:00
Pierrick Bouvier
d97c3b06de exec/cpu-all: transfer exec/cpu-common include to cpu.h headers
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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>
Message-ID: <20250325045915.994760-15-pierrick.bouvier@linaro.org>
2025-04-23 15:04:57 -07:00
Pierrick Bouvier
9c2ff9cdc9 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>
2025-04-23 15:04:57 -07:00
Pierrick Bouvier
22a7c2f239 exec/cpu-all: remove exec/cpu-interrupt 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>
Message-ID: <20250325045915.994760-8-pierrick.bouvier@linaro.org>
2025-04-23 15:04:57 -07:00
Philippe Mathieu-Daudé
a433b2194f target/mips: Restrict SoftMMU mmu_index() to TCG
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250401080938.32278-14-philmd@linaro.org>
2025-04-23 15:04:57 -07:00
Richard Henderson
695e7f6026 target/mips: Restrict semihosting tests to system mode
We do not set CONFIG_SEMIHOSTING in
configs/targets/mips*-linux-user.mak.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 14:08:29 -07:00
Richard Henderson
8be545ba5a include/system: Move exec/memory.h to system/memory.h
Convert the existing includes with

  sed -i ,exec/memory.h,system/memory.h,g

Move the include within cpu-all.h into a !CONFIG_USER_ONLY block.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-04-23 14:08:21 -07:00
Richard Henderson
256ba7715b target/mips: Simplify and fix update_pagemask
When update_pagemask was split from helper_mtc0_pagemask,
we failed to actually write to the new parameter but continue
to write to env->CP0_PageMask.  Thus the use within
page_table_walk_refill modifies cpu state and not the local
variable as expected.

Simplify by renaming to compute_pagemask and returning the
value directly.  No need for either env or pointer return.

Fixes: 074cfcb4da ("target/mips: Implement hardware page table walker for MIPS32")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250328175526.368121-4-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: qemu-stable@nongnu.org
2025-03-31 21:32:43 +02:00
Richard Henderson
d89b9899ba target/mips: Require even maskbits in update_pagemask
The number of bits set in PageMask must be even.

Fixes: d40b55bc1b ("target/mips: Fix PageMask with variable page size")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250328175526.368121-3-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: qemu-stable@nongnu.org
2025-03-31 21:32:43 +02:00
Richard Henderson
fca2817fdc target/mips: Revert TARGET_PAGE_BITS_VARY
Revert ee3863b9d4 and a08d60bc6c.  The logic behind changing
the system page size because of what the Loongson kernel "prefers"
is flawed.

In the Loongson-2E manual, section 5.5, it is clear that the cpu
supports a 4k page size (along with many others).  Similarly for
the Loongson-3 series CPUs, the 4k page size is mentioned in the
section 7.7 (PageMask Register).  Therefore we must continue to
support a 4k page size.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250328175526.368121-2-richard.henderson@linaro.org>
[PMD: Mention Loongson-3 series CPUs]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2025-03-31 21:32:43 +02:00
Philippe Mathieu-Daudé
85edafe385 target/mips: Move has_work() from CPUClass to SysemuCPUOps
Move has_work() from CPUClass to SysemuCPUOps and
cpu_mips_hw_interrupts_enabled() to system.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250125170125.32855-14-philmd@linaro.org>
2025-03-09 17:00:47 +01:00
Philippe Mathieu-Daudé
6ff5da1600 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>
2025-03-08 07:56:14 -08:00
Philippe Mathieu-Daudé
eb9b25c656 exec: Declare tlb_set_page() in 'exec/cputlb.h'
Move CPU TLB related methods to "exec/cputlb.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20241114011310.3615-18-philmd@linaro.org>
2025-03-08 07:56:14 -08:00
Philippe Mathieu-Daudé
7bb1a717cb target/mips: Set disassemble_info::endian value in disas_set_info()
Have the CPUClass::disas_set_info() callback set the
disassemble_info::endian field.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250210212931.62401-6-philmd@linaro.org>
2025-03-06 15:46:18 +01:00
Denis Rastyogin
96adf9b404 target/mips: Fix possible MSA int overflow
Fix possible overflow in 1 << (DF_BITS(df) - 2) when DF_BITS(df)
is 64 by using a 64-bit integer for the shift operation.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Reported-by: Dmitriy Fedin <d.fedin@fobos-nt.ru>
Signed-off-by: Denis Rastyogin <gerben@altlinux.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20250124122707.54264-1-gerben@altlinux.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2025-03-06 15:46:18 +01:00
Philippe Mathieu-Daudé
1501743654 accel/tcg: Rename 'hw/core/tcg-cpu-ops.h' -> 'accel/tcg/cpu-ops.h'
TCGCPUOps structure makes more sense in the accelerator context
rather than hardware emulation. Move it under the accel/tcg/ scope.

Mechanical change doing:

 $  sed -i -e 's,hw/core/tcg-cpu-ops.h,accel/tcg/cpu-ops.h,g' \
   $(git grep -l hw/core/tcg-cpu-ops.h)

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250123234415.59850-11-philmd@linaro.org>
2025-03-06 15:46:17 +01:00
Richard Henderson
a630055df3 target/mips: Use VADDR_PRIx for logging pc_next
DisasContextBase.pc_next has type vaddr; use the correct log format.

Fixes: 85c19af63e ("include/exec: Use vaddr in DisasContextBase for virtual addresses")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-18 08:29:02 -08:00
Peter Maydell
28f13bccbe fpu: allow flushing of output denormals to be after rounding
Currently we handle flushing of output denormals in uncanon_normal
always before we deal with rounding.  This works for architectures
that detect tininess before rounding, but is usually not the right
place when the architecture detects tininess after rounding.  For
example, for x86 the SDM states that the MXCSR FTZ control bit causes
outputs to be flushed to zero "when it detects a floating-point
underflow condition".  This means that we mustn't flush to zero if
the input is such that after rounding it is no longer tiny.

At least one of our guest architectures does underflow detection
after rounding but flushing of denormals before rounding (MIPS MSA);
this means we need to have a config knob for this that is separate
from our existing tininess_before_rounding setting.

Add an ftz_detection flag.  For consistency with
tininess_before_rounding, we make it default to "detect ftz after
rounding"; this means that we need to explicitly set the flag to
"detect ftz before rounding" on every existing architecture that sets
flush_to_zero, so that this commit has no behaviour change.
(This means more code change here but for the long term a less
confusing API.)

For several architectures the current behaviour is either
definitely or possibly wrong; annotate those with TODO comments.
These architectures are definitely wrong (and should detect
ftz after rounding):
 * x86
 * Alpha

For these architectures the spec is unclear:
 * MIPS (for non-MSA)
 * RX
 * SH4

PA-RISC makes ftz detection IMPDEF, but we aren't setting the
"tininess before rounding" setting that we ought to.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-11 16:22:07 +00:00
Richard Henderson
175646f641 target/*: Remove TARGET_LONG_BITS from cpu-param.h
This is now handled by the configs/targets/*.mak fragment.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-08 12:41:33 -08:00
Philippe Mathieu-Daudé
d6f7642230 licenses: Remove SPDX tags not being license identifier for Linaro
Per [*]:

  "we're only interested in adopting SPDX for recording the
  licensing info, [not] any other SPDX metadata."

Replace the 'SPDX-FileCopyrightText' and 'SPDX-FileContributor'
tags added by Linaro by 'Copyright (c)' and 'Authors' words
respectively.

[*] https://lore.kernel.org/qemu-devel/20241007154548.1144961-4-berrange@redhat.com/

Inspired-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2025-01-30 13:01:22 +03:00
Peter Maydell
7af64d103d fpu: Rename float_flag_output_denormal to float_flag_output_denormal_flushed
Our float_flag_output_denormal exception flag is set when
the fpu code flushes an output denormal to zero. Rename
it to float_flag_output_denormal_flushed:
 * this keeps it parallel with the flag for flushing
   input denormals, which we just renamed
 * it makes it clearer that it doesn't mean "set when
   the output is a denormal"

Commit created with
 for f in `git grep -l float_flag_output_denormal`; do sed -i -e 's/float_flag_output_denormal/float_flag_output_denormal_flushed/' $f; done

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250124162836.2332150-21-peter.maydell@linaro.org
2025-01-28 18:40:19 +00:00
Peter Maydell
584b7aec81 fpu: Rename float_flag_input_denormal to float_flag_input_denormal_flushed
Our float_flag_input_denormal exception flag is set when the fpu code
flushes an input denormal to zero.  This is what many guest
architectures (eg classic Arm behaviour) require, but it is not the
only donarmal-related reason we might want to set an exception flag.
The x86 behaviour (which we do not currently model correctly) wants
to see an exception flag when a denormal input is *not* flushed to
zero and is actually used in an arithmetic operation. Arm's FEAT_AFP
also wants these semantics.

Rename float_flag_input_denormal to float_flag_input_denormal_flushed
to make it clearer when it is set and to allow us to add a new
float_flag_input_denormal_used next to it for the x86/FEAT_AFP
semantics.

Commit created with
 for f in `git grep -l float_flag_input_denormal`; do sed -i -e 's/float_flag_input_denormal/float_flag_input_denormal_flushed/' $f; done

and manual editing of softfloat-types.h and softfloat.c to clean
up the indentation afterwards and to fix a comment which wasn't
using the full name of the flag.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250124162836.2332150-20-peter.maydell@linaro.org
2025-01-28 18:40:19 +00:00
Philippe Mathieu-Daudé
b708e31185 target: Replace DEVICE(object_new) -> qdev_new()
Prefer QDev API for QDev objects, avoid the underlying QOM layer.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Message-Id: <20240216110313.17039-8-philmd@linaro.org>
2025-01-13 17:06:35 +01:00
Richard Henderson
e4a8e093dc accel/tcg: Move gen_intermediate_code to TCGCPUOps.translate_core
Convert all targets simultaneously, as the gen_intermediate_code
function disappears from the target.  While there are possible
workarounds, they're larger than simply performing the conversion.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-12-24 08:32:15 -08:00
Stefan Hajnoczi
65cb7129f4 Accel & Exec patch queue
- Ignore writes to CNTP_CTL_EL0 on HVF ARM (Alexander)
 - Add '-d invalid_mem' logging option (Zoltan)
 - Create QOM containers explicitly (Peter)
 - Rename sysemu/ -> system/ (Philippe)
 - Re-orderning of include/exec/ headers (Philippe)
   Move a lot of declarations from these legacy mixed bag headers:
     . "exec/cpu-all.h"
     . "exec/cpu-common.h"
     . "exec/cpu-defs.h"
     . "exec/exec-all.h"
     . "exec/translate-all"
   to these more specific ones:
     . "exec/page-protection.h"
     . "exec/translation-block.h"
     . "user/cpu_loop.h"
     . "user/guest-host.h"
     . "user/page-protection.h"
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Merge tag 'exec-20241220' of https://github.com/philmd/qemu into staging

Accel & Exec patch queue

- Ignore writes to CNTP_CTL_EL0 on HVF ARM (Alexander)
- Add '-d invalid_mem' logging option (Zoltan)
- Create QOM containers explicitly (Peter)
- Rename sysemu/ -> system/ (Philippe)
- Re-orderning of include/exec/ headers (Philippe)
  Move a lot of declarations from these legacy mixed bag headers:
    . "exec/cpu-all.h"
    . "exec/cpu-common.h"
    . "exec/cpu-defs.h"
    . "exec/exec-all.h"
    . "exec/translate-all"
  to these more specific ones:
    . "exec/page-protection.h"
    . "exec/translation-block.h"
    . "user/cpu_loop.h"
    . "user/guest-host.h"
    . "user/page-protection.h"

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 # gpg: WARNING: This key is not certified with a trusted signature!
 # gpg:          There is no indication that the signature belongs to the owner.
 # Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* tag 'exec-20241220' of https://github.com/philmd/qemu: (59 commits)
  util/qemu-timer: fix indentation
  meson: Do not define CONFIG_DEVICES on user emulation
  system/accel-ops: Remove unnecessary 'exec/cpu-common.h' header
  system/numa: Remove unnecessary 'exec/cpu-common.h' header
  hw/xen: Remove unnecessary 'exec/cpu-common.h' header
  target/mips: Drop left-over comment about Jazz machine
  target/mips: Remove tswap() calls in semihosting uhi_fstat_cb()
  target/xtensa: Remove tswap() calls in semihosting simcall() helper
  accel/tcg: Un-inline translator_is_same_page()
  accel/tcg: Include missing 'exec/translation-block.h' header
  accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'
  accel/tcg: Restrict curr_cflags() declaration to 'internal-common.h'
  qemu/coroutine: Include missing 'qemu/atomic.h' header
  exec/translation-block: Include missing 'qemu/atomic.h' header
  accel/tcg: Declare cpu_loop_exit_requested() in 'exec/cpu-common.h'
  exec/cpu-all: Include 'cpu.h' earlier so MMU_USER_IDX is always defined
  target/sparc: Move sparc_restore_state_to_opc() to cpu.c
  target/sparc: Uninline cpu_get_tb_cpu_state()
  target/loongarch: Declare loongarch_cpu_dump_state() locally
  user: Move various declarations out of 'exec/exec-all.h'
  ...

Conflicts:
	hw/char/riscv_htif.c
	hw/intc/riscv_aplic.c
	target/s390x/cpu.c

	Apply sysemu header path changes to not in the pull request.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2024-12-21 11:07:00 -05:00
Philippe Mathieu-Daudé
abecbbbb21 target/mips: Drop left-over comment about Jazz machine
Commit 3803b6b427 ("target/mips: Fold jazz behaviour into
mips_cpu_do_transaction_failed") removed update on TCGCPUOps
and commit 119065574d ("hw/core: Constify TCGCPUOps") made
it const. Remove the now irrelevant comment.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241115152053.66442-2-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
6277e181a7 target/mips: Remove tswap() calls in semihosting uhi_fstat_cb()
In preparation of heterogeneous emulation where cores with
different endianness can run concurrently, we need to remove
the tswap() calls -- which use a fixed per-binary endianness.

Get the endianness of the UHI CPU accessed using
mips_env_is_bigendian() and replace the tswap() calls
by bswap() ones when necessary.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20241211230357.97036-3-philmd@linaro.org>
2024-12-20 17:44:57 +01:00
Philippe Mathieu-Daudé
8865049bab accel/tcg: Move tcg_cflags_has/set() to 'exec/translation-block.h'
The TranslationBlock flags are defined in 'exec/translation-block.h'.
tcg_cflags_has/set() use them, it is more logical to declare them in
the same place. Move them there too.

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: <20241212144430.66224-2-philmd@linaro.org>
2024-12-20 17:44:57 +01:00