Commit Graph

3809 Commits

Author SHA1 Message Date
Peter Maydell
b5ab62b3c0 * pc: Add a description for the i8042 property
* kvm: support for nested FRED
 * tests/unit: fix warning when compiling test-nested-aio-poll with LTO
 * kvm: refactoring of VM creation
 * target/i386: expose IBPB-BRTYPE and SBPB CPUID bits to the guest
 * hw/char: clean up serial
 * remove virtfs-proxy-helper
 * target/i386/kvm: Report which action failed in kvm_arch_put/get_registers
 * qom: improvements to object_resolve_path*()
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* pc: Add a description for the i8042 property
* kvm: support for nested FRED
* tests/unit: fix warning when compiling test-nested-aio-poll with LTO
* kvm: refactoring of VM creation
* target/i386: expose IBPB-BRTYPE and SBPB CPUID bits to the guest
* hw/char: clean up serial
* remove virtfs-proxy-helper
* target/i386/kvm: Report which action failed in kvm_arch_put/get_registers
* qom: improvements to object_resolve_path*()

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# gpg: Signature made Thu 03 Oct 2024 21:04:27 BST
# 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
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (23 commits)
  qom: update object_resolve_path*() documentation
  qom: set *ambiguous on all paths
  qom: rename object_resolve_path_type() "ambiguousp"
  target/i386/kvm: Report which action failed in kvm_arch_put/get_registers
  kvm: Allow kvm_arch_get/put_registers to accept Error**
  accel/kvm: refactor dirty ring setup
  minikconf: print error entirely on stderr
  9p: remove 'proxy' filesystem backend driver
  hw/char: Extract serial-mm
  hw/char/serial.h: Extract serial-isa.h
  hw: Remove unused inclusion of hw/char/serial.h
  target/i386: Expose IBPB-BRTYPE and SBPB CPUID bits to the guest
  kvm: refactor core virtual machine creation into its own function
  kvm/i386: replace identity_base variable with a constant
  kvm/i386: refactor kvm_arch_init and split it into smaller functions
  kvm: replace fprintf with error_report()/printf() in kvm_init()
  kvm/i386: fix return values of is_host_cpu_intel()
  kvm/i386: make kvm_filter_msr() and related definitions private to kvm module
  hw/i386/pc: Add a description for the i8042 property
  tests/unit: remove block layer code from test-nested-aio-poll
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	hw/arm/Kconfig
#	hw/arm/pxa2xx.c
2024-10-04 19:28:37 +01:00
Julia Suvorova
a1676bb304 kvm: Allow kvm_arch_get/put_registers to accept Error**
This is necessary to provide discernible error messages to the caller.

Signed-off-by: Julia Suvorova <jusual@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240927104743.218468-2-jusual@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-10-03 22:04:19 +02:00
Ard Biesheuvel
67d762e716 target/arm: Avoid target_ulong for physical address lookups
target_ulong is typedef'ed as a 32-bit integer when building the
qemu-system-arm target, and this is smaller than the size of an
intermediate physical address when LPAE is being used.

Given that Linux may place leaf level user page tables in high memory
when built for LPAE, the kernel will crash with an external abort as
soon as it enters user space when running with more than ~3 GiB of
system RAM.

So replace target_ulong with vaddr in places where it may carry an
address value that is not representable in 32 bits.

Fixes: f3639a64f6 ("target/arm: Use softmmu tlbs for page table walking")
Cc: qemu-stable@nongnu.org
Reported-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Message-id: 20240927071051.1444768-1-ardb+git@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-01 13:55:38 +01:00
Peter Maydell
173c427eb5 * Convert more Avocado tests to the new functional test framework
* Clean up assert() statements, use g_assert_not_reached() when possible
 * Improve output of the gitlab CI jobs
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Merge tag 'pull-request-2024-09-25' of https://gitlab.com/thuth/qemu into staging

* Convert more Avocado tests to the new functional test framework
* Clean up assert() statements, use g_assert_not_reached() when possible
* Improve output of the gitlab CI jobs

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# 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-2024-09-25' of https://gitlab.com/thuth/qemu: (44 commits)
  .gitlab-ci.d: Make separate collapsible log sections for build and test
  .gitlab-ci.d: Split build and test in cross build job templates
  scripts/checkpatch.pl: emit error when using assert(false)
  tests/qtest: remove return after g_assert_not_reached()
  qom: remove return after g_assert_not_reached()
  qobject: remove return after g_assert_not_reached()
  migration: remove return after g_assert_not_reached()
  hw/ppc: remove return after g_assert_not_reached()
  hw/pci: remove return after g_assert_not_reached()
  hw/net: remove return after g_assert_not_reached()
  hw/hyperv: remove return after g_assert_not_reached()
  include/qemu: remove return after g_assert_not_reached()
  tcg/loongarch64: remove break after g_assert_not_reached()
  fpu: remove break after g_assert_not_reached()
  target/riscv: remove break after g_assert_not_reached()
  target/arm: remove break after g_assert_not_reached()
  hw/tpm: remove break after g_assert_not_reached()
  hw/scsi: remove break after g_assert_not_reached()
  hw/net: remove break after g_assert_not_reached()
  hw/acpi: remove break after g_assert_not_reached()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-28 12:34:38 +01:00
Pierrick Bouvier
200e25b140 target/arm: remove break after g_assert_not_reached()
This patch is part of a series that moves towards a consistent use of
g_assert_not_reached() rather than an ad hoc mix of different
assertion mechanisms.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20240919044641.386068-22-pierrick.bouvier@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-09-24 13:53:35 +02:00
Philippe Mathieu-Daudé
b14d064962 license: Update deprecated SPDX tag LGPL-2.0+ to LGPL-2.0-or-later
The 'LGPL-2.0+' license identifier has been deprecated since license
list version 2.0rc2 [1] and replaced by the 'LGPL-2.0-or-later' [2]
tag.

[1] https://spdx.org/licenses/LGPL-2.0+.html
[2] https://spdx.org/licenses/LGPL-2.0-or-later.html

Mechanical patch running:

  $ sed -i -e s/LGPL-2.0+/LGPL-2.0-or-later/ \
    $(git grep -l 'SPDX-License-Identifier: LGPL-2.0+$')

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-09-20 10:11:59 +03:00
Michael Tokarev
5691f4778e mark <zlib.h> with for-crc32 in a consistent manner
in many cases, <zlib.h> is only included for crc32 function,
and in some of them, there's a comment saying that, but in
a different way.  In one place (hw/net/rtl8139.c), there was
another #include added between the comment and <zlib.h> include.

Make all such comments to be on the same line as #include, make
it consistent, and also add a few missing comments, including
hw/nvram/mac_nvram.c which uses adler32 instead.

There's no code changes.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-09-20 08:06:56 +03:00
Peter Maydell
8676007eff target/arm: Correct ID_AA64ISAR1_EL1 value for neoverse-v1
The Neoverse-V1 TRM is a bit confused about the layout of the
ID_AA64ISAR1_EL1 register, and so its table 3-6 has the wrong value
for this ID register.  Trust instead section 3.2.74's list of which
fields are set.

This means that we stop incorrectly reporting FEAT_XS as present, and
now report the presence of FEAT_BF16.

Cc: qemu-stable@nongnu.org
Reported-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240917161337.3012188-1-peter.maydell@linaro.org
2024-09-19 13:17:21 +01:00
Richard Henderson
f21b07e272 target/arm: Convert scalar [US]QSHRN, [US]QRSHRN, SQSHRUN to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-30-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
a3b6578f38 target/arm: Convert vector [US]QSHRN, [US]QRSHRN, SQSHRUN to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-29-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
6e1ae741f9 target/arm: Convert SQSHL, UQSHL, SQSHLU (immediate) to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-28-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
3e683f0a8c target/arm: Widen NeonGenNarrowEnvFn return to 64 bits
While these functions really do return a 32-bit value,
widening the return type means that we need do less
marshalling between TCG types.

Remove NeonGenNarrowEnvFn typedef; add NeonGenOne64OpEnvFn.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240912024114.1097832-27-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
ef2b80eb21 target/arm: Convert VQSHL, VQSHLU to gvec
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-26-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
7e5d5a3d8c target/arm: Convert handle_scalar_simd_shli to decodetree
This includes SHL and SLI.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
9c80de4884 target/arm: Convert handle_scalar_simd_shri to decodetree
This includes SSHR, USHR, SSRA, USRA, SRSHR, URSHR,
SRSRA, URSRA, SRI.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-24-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:58 +01:00
Richard Henderson
fe5b8abe17 target/arm: Convert SHRN, RSHRN to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-23-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
a597e55b7f target/arm: Split out subroutines of handle_shri_with_rndacc
There isn't a lot of commonality along the different paths of
handle_shri_with_rndacc.  Split them out to separate functions,
which will be usable during the decodetree conversion.

Simplify 64-bit rounding operations to not require double-word arithmetic.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-22-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
c6bc6966ad target/arm: Push tcg_rnd into handle_shri_with_rndacc
We always pass the same value for round; compute it
within common code.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-21-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
6ed32dd495 target/arm: Convert SSHLL, USHLL to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-20-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
102f062e6e target/arm: Use {, s}extract in handle_vec_simd_wshli
Combine the right shift with the extension via
the tcg extract operations.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-19-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
583d69a746 target/arm: Convert handle_vec_simd_shli to decodetree
This includes SHL and SLI.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-18-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
6e74165564 target/arm: Convert handle_vec_simd_shri to decodetree
This includes SSHR, USHR, SSRA, USRA, SRSHR, URSHR, SRSRA, URSRA, SRI.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
da457c9356 target/arm: Fix whitespace near gen_srshr64_i64
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
00bcab5bad target/arm: Introduce gen_gvec_sshr, gen_gvec_ushr
Handle the two special cases within these new
functions instead of higher in the call stack.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-15-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
500928f242 target/arm: Convert MOVI, FMOV, ORR, BIC (vector immediate) to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-14-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
c777e73cbe target/arm: Convert FMOVI (scalar, immediate) to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-13-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
3d44e070a6 target/arm: Convert FMAXNMV, FMINNMV, FMAXV, FMINV to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-12-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:57 +01:00
Richard Henderson
cc7ece7216 target/arm: Convert ADDV, *ADDLV, *MAXV, *MINV to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
d944e04961 target/arm: Simplify do_reduction_op
Use simple shift and add instead of ctpop, ctz, shift and mask.
Unlike SVE, there is no predicate to disable elements.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
a29e2c7d33 target/arm: Convert UZP, TRN, ZIP to decodetree
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-9-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
5dd7318f24 target/arm: Convert TBL, TBX to decodetree
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
9c8f7da04b target/arm: Convert EXT to decodetree
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
88f26451c9 target/arm: Use tcg_gen_extract2_i64 for EXT
The extract2 tcg op performs the same operation
as the do_ext64 function.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
ee36a772c0 target/arm: Use cmpsel in gen_sshl_vec
Instead of cmp+and or cmp+andc, use cmpsel.  This will
be better for hosts that use predicate registers for cmp.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
c17e35b893 target/arm: Use cmpsel in gen_ushl_vec
Instead of cmp+and or cmp+andc, use cmpsel.  This will
be better for hosts that use predicate registers for cmp.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
04e824eac9 target/arm: Replace tcg_gen_dupi_vec with constants in translate-sve.c
Instead of copying a constant into a temporary with dupi,
use a vector constant directly.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Richard Henderson
143e179c84 target/arm: Replace tcg_gen_dupi_vec with constants in gengvec.c
Instead of copying a constant into a temporary with dupi,
use a vector constant directly.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240912024114.1097832-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-19 12:58:56 +01:00
Alireza Sanaee
676624d757 target/arm/tcg: refine cache descriptions with a wrapper
This patch allows for easier manipulation of the cache description
register, CCSIDR. Which is helpful for testing as well. Currently,
numbers get hard-coded and might be prone to errors.

Therefore, this patch adds a wrapper for different types of CPUs
available in tcg to decribe caches. One function `make_ccsidr` supports
two cases by carrying a parameter as FORMAT that can be LEGACY and
CCIDX which determines the specification of the register.

For CCSIDR register, 32 bit version follows specification [1].
Conversely, 64 bit version follows specification [2].

[1] B4.1.19, ARM Architecture Reference Manual ARMv7-A and ARMv7-R
edition, https://developer.arm.com/documentation/ddi0406
[2] D23.2.29, ARM Architecture Reference Manual for A-profile Architecture,
https://developer.arm.com/documentation/ddi0487/latest/

Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240903144550.280-1-alireza.sanaee@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-13 15:31:47 +01:00
Danny Canter
d54ffa54fb hvf: arm: Implement and use hvf_get_physical_address_range
This patch's main focus is to use the previously added
hvf_get_physical_address_range to inform VM creation
about the IPA size we need for the VM, so we can extend
the default 36b IPA size and support VMs with 64+GB of
RAM. This is done by freezing the memory map, computing
the highest GPA and then (depending on if the platform
supports an IPA size that large) telling the kernel to
use a size >= for the VM. In pursuit of this a couple of
things related to how we handle the physical address range
we expose to guests were altered, but for an explanation of
what we were doing:

Today, to get the IPA size we were reading id_aa64mmfr0_el1's
PARange field from a newly made vcpu. Unfortunately, HVF just
returns the hosts PARange directly for the initial value and
not the IPA size that will actually back the VM, so we believe
we have much more address space than we actually do today it seems.

Starting in macOS 13.0 some APIs were introduced to be able to
query the maximum IPA size the kernel supports, and to set the IPA
size for a given VM. However, this still has a couple of issues
on < macOS 15. Up until macOS 15 (and if the hardware supported
it) the max IPA size was 39 bits which is not a valid PARange
value, so we can't clamp down what we advertise in the vcpu's
id_aa64mmfr0_el1 to our IPA size. Starting in macOS 15 however,
the maximum IPA size is 40 bits (if it's supported in the hardware
as well) which is also a valid PARange value so we can set our IPA
size to the maximum as well as clamp down the PARange we advertise
to the guest. This allows VMs with 64+ GB of RAM and should fix the
oddness of the PARange situation as well.

Signed-off-by: Danny Canter <danny_canter@apple.com>
Message-id: 20240828111552.93482-4-danny_canter@apple.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-13 15:31:47 +01:00
Danny Canter
2c760670af hvf: Split up hv_vm_create logic per arch
This is preliminary work to split up hv_vm_create
logic per platform so we can support creating VMs
with > 64GB of RAM on Apple Silicon machines. This
is done via ARM HVF's hv_vm_config_create() (and
other APIs that modify this config that will be
coming in future patches). This should have no
behavioral difference at all as hv_vm_config_create()
just assigns the same default values as if you just
passed NULL to the function.

Signed-off-by: Danny Canter <danny_canter@apple.com>
Message-id: 20240828111552.93482-3-danny_canter@apple.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-13 15:31:46 +01:00
Gustavo Romero
0298229ad6 gdbstub: Add support for MTE in system mode
This commit makes handle_q_memtag, handle_q_isaddresstagged, and
handle_Q_memtag stubs build for system mode, allowing all GDB
'memory-tag' subcommands to work with QEMU gdbstub on aarch64 system
mode.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/620
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240906143316.657436-3-gustavo.romero@linaro.org>
[AJB: add #ifdef CONFIG_TCG guards]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240910173900.4154726-8-alex.bennee@linaro.org>
2024-09-10 23:33:51 +01:00
Gustavo Romero
f611060531 gdbstub: Use specific MMU index when probing MTE addresses
Use cpu_mmu_index() to determine the specific translation regime (MMU
index) before probing addresses using allocation_tag_mem_probe().

Currently, the MMU index is hardcoded to 0 and only works for user mode.
By obtaining the specific MMU index according to the translation regime,
future use of the stubs relying on allocation_tag_mem_probe in other
regimes will be possible, like in EL1.

This commit also changes the ptr_size value passed to
allocation_tag_mem_probe() from 8 to 1. The ptr_size parameter actually
represents the number of bytes in the memory access (which can be as
small as 1 byte), rather than the number of bits used in the address
space pointed to by ptr.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240906143316.657436-2-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240910173900.4154726-7-alex.bennee@linaro.org>
2024-09-10 23:33:48 +01:00
Peter Maydell
76dd36660b target/arm: Correct names of VFP VFNMA and VFNMS insns
In vfp.decode we have the names of the VFNMA and VFNMS instructions
the wrong way around.  The architecture says that bit 6 is the 'op'
bit, which is 1 for VFNMA and 0 for VFNMS, but we label these two
lines of decode the other way around.  This doesn't cause any
user-visible problem because in the handling of these functions in
translate-vfp.c we give VFNMA the behaviour specified for VFNMS and
vice-versa, but it's confusing when reading the code.

Switch the names of the VFP VFNMA and VFNMS instructions in
the decode file and flip the behaviour also.

NB: the instructions VFMA and VFMS *are* decoded with op=0 for
VFMA and op=1 for VFMS; the confusion probably arose because
we assumed VFNMA and VFNMS to be the same way around.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2536
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240830152156.2046590-1-peter.maydell@linaro.org
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:37 +01:00
Peter Maydell
5d1187b308 target/arm: Enable FEAT_EBF16 in the "max" CPU
Now that we've implemented the required behaviour for FEAT_EBF16, we
can enable it for the "max" CPU type, list it in our documentation,
and delete a TODO comment about it being missing.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:36 +01:00
Peter Maydell
0e1850182a target/arm: Implement FPCR.EBF=1 semantics for bfdotadd()
Implement the FPCR.EBF=1 semantics for bfdotadd() operations:
 * is_ebf() sets up fpst and fpst_odd
 * bfdotadd_ebf() implements the fused paired-multiply-and-add
   operation that we need

The paired-multiply-and-add is similar to f16_dotadd() and
we use the same trick here as in that function, but the inputs
here are bfloat16 rather than float16.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:36 +01:00
Peter Maydell
09b0d9e0ad target/arm: Prepare bfdotadd() callers for FEAT_EBF support
We use bfdotadd() in four callsites for various helper functions. Currently
this all assumes that we have the FPCR.EBF=0 semantics. For FPCR.EBF=1
we will need to:
 * call a different routine to bfdotadd() because we need to do a
   fused multiply-add rather than separate multiply and add steps
 * use a different float_status that honours the FPCR rounding mode
   and denormal-flushing fields
 * pass in an extra float_status that has been set up to perform
   round-to-odd rounding

To prepare for this, refactor all the callsites so that instead of
   for (...) {
       x = bfdotadd(...);
   }

they are:
   float_status fpst, fpst_odd;
   if (is_ebf(env, &fpst, &fpst_odd)) {
       for (...) {
           x = bfdotadd_ebf(..., &fpst, &fpst_odd);
       }
   } else {
       for (...) {
           x = bfdotadd(..., &fpst);
       }
   }

For the moment the is_ebf() function always returns false, sets up
fpst for EBF=0 semantics and never sets up fpst_odd; bfdotadd_ebf()
will assert if called. We'll fill in the handling for EBF=1 in the
next commit.

This change should be a zero-behaviour-change refactor.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:36 +01:00
Peter Maydell
2da2d7dc90 target/arm: Pass env pointer through to gvec_bfmmla helper
Pass the env pointer through to the gvec_bfmmla helper,
so we can use it to add support for FEAT_EBF16.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:36 +01:00
Peter Maydell
c8d644b951 target/arm: Pass env pointer through to gvec_bfdot_idx helper
Pass the env pointer through to the gvec_bfdot_idx helper,
so we can use it to add support for FEAT_EBF16.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:35 +01:00
Peter Maydell
75a6784dad target/arm: Pass env pointer through to gvec_bfdot helper
Pass the env pointer through to the gvec_bfdot helper,
so we can use it to add support for FEAT_EBF16.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:35 +01:00
Peter Maydell
ecabcfa47c target/arm: Pass env pointer through to sme_bfmopa helper
To implement the FEAT_EBF16 semantics, we are going to need
the CPUARMState env pointer in every helper function which calls
bfdotadd().

Pass the env pointer through from generated code to the sme_bfmopa
helper. (We'll add the code that uses it when we've adjusted
all the helpers to have access to the env pointer.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-05 13:12:35 +01:00