linaro-toolchain April 2022

linaro-toolchain@lists.linaro.org

4 participants
14 discussions

by Thiago Jung Bauermann

Hello, # [GNU-767] Support changing SVE vector length in remote debugging * Continued working on the testsuite regressions introduced by my code. - Realised that gdbserver uses “thread->tdesc != NULL” as a proxy of whether it has already attached to the inferior process. My change to track the target description per-thread instead of per-process invalidated this equivalence. Fixed a few places to use “proc->attached” instead, which is the direct way of testing that condition. - Now looking into an issue with gdbserver loading libthread_db.so. # Misc - Reviewed Tom Tromey's “[PATCH 00/36] C++-ify breakpoints” patch series¹. Spotted one bug. -- Thiago ¹ https://sourceware.org/pipermail/gdb-patches/2022-January/185256.html msgid:20220118194007.2853108-1-tom@tromey.com

1 year, 12 months

[ACTIVITY] week ending May. 1 2022

by Alex Bennée

Project Stratos =============== - posted [RFC PATCH] xen/arm: p2m don't fall over on FEAT_LPA enabled hw Message-Id: <20220426160548.2020794-1-alex.bennee(a)linaro.org> - posted [PATCH v2] xen/arm: p2m don't fall over on FEAT_LPA enabled hw Message-Id: <20220428103410.2723837-1-alex.bennee(a)linaro.org> vhost-device maintainer effort ([UM-196]) - adopted [PATCH 0/2] virtio: Add vhost-user-gpio device's support Message-Id: <5f560cab92d0d789b1c94295ec74b9952907d69d.1641987128.git.viresh.kumar(a)linaro.org> - posted [RFC PATCH v2] tests/qtest: attempt to enable tests for virtio-gpio (!working) Message-Id: <20220408155704.2777166-1-alex.bennee(a)linaro.org> QEMU Upstream Work ([UM-2]) =========================== - posted [PATCH v1 00/15] testing, docs, tracepoints and cputlb hacks Message-Id: <20220408164742.2844631-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] target/i386: avoid copying junk to extended ZMMReg fields Message-Id: <20220411145609.3932882-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] gdb/gic: expose cpu_index via MxTxAttrs Message-Id: <20220412104519.201655-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] tests/guest-debug: better handle gdb crashes Message-Id: <20220413121115.639610-1-alex.bennee(a)linaro.org> [UM-2] <https://linaro.atlassian.net/browse/UM-2> Completed Reviews [5/5] ======================= [PATCH for-7.1 v2 00/39] Logging cleanup and per-thread logfiles Message-Id: <20220326132534.543738-1-richard.henderson(a)linaro.org> [PATCH 00/17] tests/docker and tests/tcg cleanup and diet Message-Id: <20220401141326.1244422-1-pbonzini(a)redhat.com> [PATCH v1] virtio/virtio.c: include virtio prefix in error message Message-Id: <20220414112902.41390-1-codeguy.moteen(a)gmail.com> [PATCH v3 00/39] Logging cleanup and per-thread logfiles Message-Id: <20220417183019.755276-1-richard.henderson(a)linaro.org> [PATCH v3 00/60] target/arm: Cleanups, new features, new cpus Message-Id: <20220417174426.711829-1-richard.henderson(a)linaro.org> - or at least a chunk of it Absences ======== - finally got hit with COVID Current Review Queue ==================== TODO [PATCH 0/9] Record/replay refactoring and stuff Message-Id: <165062838915.526882.13230207960407998257.stgit@pasha-ThinkPad-X280> ==================================================================================================================================== TODO [RFC PATCH 0/6] virtio: Solution to restrict memory access under Xen using xen-virtio DMA ops layer Message-Id: <1649963973-22879-1-git-send-email-olekstysh(a)gmail.com> =========================================================================================================================================================================== TODO [PATCH 0/5] Vhost-user: add Virtio RSS support Message-Id: <20220408122813.1357045-1-maxime.coquelin(a)redhat.com> ==================================================================================================================== -- Alex Bennée

1 year, 12 months

[ACTIVITY] report week ending 28 Apr

by Peter Maydell

Progress: * UM-2 [QEMU upstream maintainership] + investigating a bug report about the guest UEFI crashing on startup when using KVM on AArch64 with an SMP guest (sadly I haven't been able to repro it myself thus far) * QEMU-422 [QEMU Arm Neoverse V1 vCPU for TCG] + audited code to check we can enable FEAT_TTL in QEMU (ie we ignore the new TTL hint field in TLB invalidate operations) + audited code to check we can enable FEAT_BBM level 2 in QEMU (our TLB implementation never allows multiple clashing TLB entries) + audited code to check we can enable SMMUv3.2-BBML2 in our SMMUv3 (our SMMU TLB does allow multiple entries but will always select the one for the lowest level and ignore the others) + sent patches to advertise FEAT_TTL, FEAT_BBM, SMMUv3.2-BBML2 in CPU and SMMU ID registers -- PMM

1 year, 12 months

[ACTIVITY] Report for week #16

by Thiago Jung Bauermann

Hello, # [GNU-767] Support changing SVE vector length in remote debugging * Found and fixed problem with the gdbserver prototype: it didn't clear the registers cache when the target description changed. The prototype is working now. * Turned my attention to the testsuite regressions introduced by my changes. Fixed one where gdbserver was crashing when debugging multi-threaded programs, and now investigating one where gdbserver returns an error when handling the ‘vRun’ remote protocol packet. # Misc * Public holiday on Thursday — but I took it on Friday instead. -- Thiago

1 year, 12 months

[ACTIVITY] report week ending 22 Apr

by Peter Maydell

Progress (two half-weeks): * UM-2 [QEMU upstream maintainership] + Got the 7.0 release out of the door and handed over pullrequest processing to RTH for the 7.1 cycle \o/ + Code review backlog now pretty nearly empty (worked through several large patchsets from RTH as well as some smaller things) + two arm pullreqs for 7.1 sent out already * QEMU-420 [GICv4 emulation] + The GICv4 emulation has now made it through code review and since we've released 7.0 it is now in upstream git for 7.1 + The GICv4.1 work has been moved to a new epic QEMU-479, as we're not going to do that immediately + This epic is therefore closed! -- PMM

2 years

[ACTIVITY] Report for week #15

by Thiago Jung Bauermann

Hello, # [GNU-767] Support changing SVE vector length in remote debugging * Implemented prototype of GDB and gdbserver changing the target description in sync when the vg pseudo-register changes. The GDB side seems to be working, but gdbserver still has issues which I'm currently debugging. # Misc * Public holiday on Friday. -- Thiago

2 years

[ACTIVITY] week ending Apr. 17 2022

by Alex Bennée

Project Stratos =============== - syncs with Takihiro on VFIO networking vhost-device maintainer effort ([UM-196]) - adopted [PATCH 0/2] virtio: Add vhost-user-gpio device's support Message-Id: <5f560cab92d0d789b1c94295ec74b9952907d69d.1641987128.git.viresh.kumar(a)linaro.org> - posted [RFC PATCH v2] tests/qtest: attempt to enable tests for virtio-gpio (!working) Message-Id: <20220408155704.2777166-1-alex.bennee(a)linaro.org> QEMU Upstream Work ([UM-2]) =========================== - posted [PATCH v1 00/15] testing, docs, tracepoints and cputlb hacks Message-Id: <20220408164742.2844631-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] target/i386: avoid copying junk to extended ZMMReg fields Message-Id: <20220411145609.3932882-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] gdb/gic: expose cpu_index via MxTxAttrs Message-Id: <20220412104519.201655-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] tests/guest-debug: better handle gdb crashes Message-Id: <20220413121115.639610-1-alex.bennee(a)linaro.org> [UM-2] <https://linaro.atlassian.net/browse/UM-2> Completed Reviews [3/3] ======================= [PATCH for-7.1 v2 00/39] Logging cleanup and per-thread logfiles Message-Id: <20220326132534.543738-1-richard.henderson(a)linaro.org> [PATCH 00/17] tests/docker and tests/tcg cleanup and diet Message-Id: <20220401141326.1244422-1-pbonzini(a)redhat.com> [PATCH v1] virtio/virtio.c: include virtio prefix in error message Message-Id: <20220414112902.41390-1-codeguy.moteen(a)gmail.com> Absences ======== - finally got hit with COVID Current Review Queue ==================== TODO [RFC PATCH 0/6] virtio: Solution to restrict memory access under Xen using xen-virtio DMA ops layer Message-Id: <1649963973-22879-1-git-send-email-olekstysh(a)gmail.com> =========================================================================================================================================================================== TODO [PATCH 0/5] Vhost-user: add Virtio RSS support Message-Id: <20220408122813.1357045-1-maxime.coquelin(a)redhat.com> ==================================================================================================================== TODO [PATCH 0/3] vhost-user: Fixes for VHOST_USER_ADD/REM_MEM_REG Message-Id: <20220407133657.155281-1-kwolf(a)redhat.com> ======================================================================================================================= -- Alex Bennée

2 years

[TCWG CI] Regression caused by gcc: tree.cc: Add tree_builtin_call_types_compatible_p [PR105150]

by ci_notify＠linaro.org

[TCWG CI] Regression caused by gcc: tree.cc: Add tree_builtin_call_types_compatible_p [PR105150]: commit 973a2ce71f8dab559fbbfc34b59e39e047df74a6 Author: Jakub Jelinek <jakub(a)redhat.com> tree.cc: Add tree_builtin_call_types_compatible_p [PR105150] Results regressed to # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1: -5 # build_abe qemu: -2 # linux_n_obj: 7205 # First few build errors in logs: # 00:11:32 make[1]: *** [scripts/Makefile.modpost:134: modules-only.symvers] Error 1 # 00:11:32 make: *** [Makefile:1749: modules] Error 2 from # reset_artifacts: -10 # build_abe binutils: -9 # build_abe stage1: -5 # build_abe qemu: -2 # linux_n_obj: 8131 # linux build successful: all # linux boot successful: boot THIS IS THE END OF INTERESTING STUFF. BELOW ARE LINKS TO BUILDS, REPRODUCTION INSTRUCTIONS, AND THE RAW COMMIT. This commit has regressed these CI configurations: - tcwg_kernel/gnu-master-aarch64-mainline-defconfig First_bad build: https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… Last_good build: https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… Baseline build: https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… Even more details: https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… Reproduce builds: <cut> mkdir investigate-gcc-973a2ce71f8dab559fbbfc34b59e39e047df74a6 cd investigate-gcc-973a2ce71f8dab559fbbfc34b59e39e047df74a6 # Fetch scripts git clone https://git.linaro.org/toolchain/jenkins-scripts # Fetch manifests and test.sh script mkdir -p artifacts/manifests curl -o artifacts/manifests/build-baseline.sh https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… --fail curl -o artifacts/manifests/build-parameters.sh https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… --fail curl -o artifacts/test.sh https://ci.linaro.org/job/tcwg_kernel-gnu-bisect-gnu-master-aarch64-mainlin… --fail chmod +x artifacts/test.sh # Reproduce the baseline build (build all pre-requisites) ./jenkins-scripts/tcwg_kernel-build.sh @@ artifacts/manifests/build-baseline.sh # Save baseline build state (which is then restored in artifacts/test.sh) mkdir -p ./bisect rsync -a --del --delete-excluded --exclude /bisect/ --exclude /artifacts/ --exclude /gcc/ ./ ./bisect/baseline/ cd gcc # Reproduce first_bad build git checkout --detach 973a2ce71f8dab559fbbfc34b59e39e047df74a6 ../artifacts/test.sh # Reproduce last_good build git checkout --detach 54ed6563d22694aa3e1935f89641a4f696a3a9f7 ../artifacts/test.sh cd .. </cut> Full commit (up to 1000 lines): <cut> commit 973a2ce71f8dab559fbbfc34b59e39e047df74a6 Author: Jakub Jelinek <jakub(a)redhat.com> Date: Thu Apr 7 09:10:58 2022 +0200 tree.cc: Add tree_builtin_call_types_compatible_p [PR105150] And here is the follow-up patch that does the argument checking on GENERIC. It ensures TYPE_MAIN_VARIANT == TYPE_MAIN_VARIANT compatibility on the arguments, except for pointer arguments where both builtin's prototype and actual arguments have to be pointers and satisfy tree_nop_conversion_p, and for promoted char/short arguments where argument need to have integral signed type tree_nop_conversion_p compatible with integer_type_node. 2022-04-07 Jakub Jelinek <jakub(a)redhat.com> PR tree-optimization/105150 * tree.cc (tree_builtin_call_types_compatible_p): New function. (get_call_combined_fn): Use it. * gcc.dg/pr105150.c: New test. --- gcc/testsuite/gcc.dg/pr105150.c | 8 ++++++ gcc/tree.cc | 57 ++++++++++++++++++++++++++++++++++++++++- 2 files changed, 64 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/pr105150.c b/gcc/testsuite/gcc.dg/pr105150.c new file mode 100644 index 00000000000..900460c1555 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr105150.c @@ -0,0 +1,8 @@ +/* PR tree-optimization/105150 */ +/* { dg-options "-w -Ofast" } */ + +#define A(name) __typeof (__builtin_##name (0)) name (); \ + float name##1 () { return !name (1); } \ + double name##2 () { return name (1.0L); } +#define B(name) A(name) A(name##l) +B (sqrt) diff --git a/gcc/tree.cc b/gcc/tree.cc index ec200e9a7eb..8f83ea1aae3 100644 --- a/gcc/tree.cc +++ b/gcc/tree.cc @@ -8406,6 +8406,59 @@ get_callee_fndecl (const_tree call) return NULL_TREE; } +/* Return true when STMTs arguments and return value match those of FNDECL, + a decl of a builtin function. */ + +static bool +tree_builtin_call_types_compatible_p (const_tree call, tree fndecl) +{ + gcc_checking_assert (DECL_BUILT_IN_CLASS (fndecl) != NOT_BUILT_IN); + + if (DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL) + if (tree decl = builtin_decl_explicit (DECL_FUNCTION_CODE (fndecl))) + fndecl = decl; + + if (TYPE_MAIN_VARIANT (TREE_TYPE (call)) + != TYPE_MAIN_VARIANT (TREE_TYPE (TREE_TYPE (fndecl)))) + return false; + + tree targs = TYPE_ARG_TYPES (TREE_TYPE (fndecl)); + unsigned nargs = call_expr_nargs (call); + for (unsigned i = 0; i < nargs; ++i, targs = TREE_CHAIN (targs)) + { + /* Variadic args follow. */ + if (!targs) + return true; + tree arg = CALL_EXPR_ARG (call, i); + tree type = TREE_VALUE (targs); + if (TYPE_MAIN_VARIANT (type) != TYPE_MAIN_VARIANT (TREE_TYPE (arg))) + { + /* For pointer arguments be more forgiving, e.g. due to + FILE * vs. fileptr_type_node, or say char * vs. const char * + differences etc. */ + if (POINTER_TYPE_P (type) + && POINTER_TYPE_P (TREE_TYPE (arg)) + && tree_nop_conversion_p (type, TREE_TYPE (arg))) + continue; + /* char/short integral arguments are promoted to int + by several frontends if targetm.calls.promote_prototypes + is true. Allow such promotion too. */ + if (INTEGRAL_TYPE_P (type) + && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node) + && INTEGRAL_TYPE_P (TREE_TYPE (arg)) + && !TYPE_UNSIGNED (TREE_TYPE (arg)) + && targetm.calls.promote_prototypes (TREE_TYPE (fndecl)) + && tree_nop_conversion_p (integer_type_node, + TREE_TYPE (arg))) + continue; + return false; + } + } + if (targs && !VOID_TYPE_P (TREE_VALUE (targs))) + return false; + return true; +} + /* If CALL_EXPR CALL calls a normal built-in function or an internal function, return the associated function code, otherwise return CFN_LAST. */ @@ -8419,7 +8472,9 @@ get_call_combined_fn (const_tree call) return as_combined_fn (CALL_EXPR_IFN (call)); tree fndecl = get_callee_fndecl (call); - if (fndecl && fndecl_built_in_p (fndecl, BUILT_IN_NORMAL)) + if (fndecl + && fndecl_built_in_p (fndecl, BUILT_IN_NORMAL) + && tree_builtin_call_types_compatible_p (call, fndecl)) return as_combined_fn (DECL_FUNCTION_CODE (fndecl)); return CFN_LAST; </cut>

2 years

[ACTIVITY] Report for week #14

by Thiago Jung Bauermann

Hello, # [GNU-767] Support changing SVE vector length in remote debugging * Got prototype of variable length vectors in GDB target descriptions barely working, but fell down a rabbit hole trying to fix an issue with the vector register size being misreported by ‘sizeof()’. Decided to change tack and implement the simpler aim of updating the client and server target descriptions in sync when the vector length changes. This is Luis' idea from 2020¹, and closer to how native GDB debugging currently works in this scenario. -- Thiago ¹ https://sourceware.org/pipermail/gdb/2020-January/048341.html

2 years

[ACTIVITY] week ending Apr. 10 2022

by Alex Bennée

Project Stratos =============== vhost-device maintainer effort ([UM-196]) - maintainer review work - adopted [PATCH 0/2] virtio: Add vhost-user-gpio device's support Message-Id: <5f560cab92d0d789b1c94295ec74b9952907d69d.1641987128.git.viresh.kumar(a)linaro.org> - posted [RFC PATCH v2] tests/qtest: attempt to enable tests for virtio-gpio (!working) Message-Id: <20220408155704.2777166-1-alex.bennee(a)linaro.org> [UM-196] <https://linaro.atlassian.net/browse/UM-196> Linux RPMB Sub-system and virtio-driver ([STR-40]) - posted [PATCH v2 0/4] rpmb subsystem, uapi and virtio-rpmb driver Message-Id: <20220405093759.1126835-1-alex.bennee(a)linaro.org> - posted [RFC PATCH] tests/qtest: properly initialise the vring used idx Message-Id: <20220406173356.1891500-1-alex.bennee(a)linaro.org> [STR-40] <https://linaro.atlassian.net/browse/STR-40> QEMU Upstream Work ([UM-2]) =========================== - posted [RFC PATCH] tests/qtest: pass stdout/stderr down to subtests Message-Id: <20220407150042.2338562-1-alex.bennee(a)linaro.org> - posted [PATCH v1 00/15] testing, docs, tracepoints and cputlb hacks Message-Id: <20220408164742.2844631-1-alex.bennee(a)linaro.org> [UM-2] <https://linaro.atlassian.net/browse/UM-2> Completed Reviews [3/3] ======================= [PATCH 00/15] tests/docker and tests/tcg cleanup and diet Message-Id: <87czi6xbzo.fsf(a)linaro.org> [PATCH] plugins: Assert mmu_idx in range before use in qemu_plugin_get_hwaddr Message-Id: <20220401190233.329360-1-richard.henderson(a)linaro.org> [PATCH v3 0/5] qtests/libqos: Allow PCI tests to be run with virt-machine Message-Id: <20220210145254.157790-1-eric.auger(a)redhat.com> Absences ======== - dodging COVID while the rest of the household has it Current Review Queue ==================== TODO [PATCH v9 00/45] CXl 2.0 emulation Support Message-Id: <20220404151445.10955-19-Jonathan.Cameron(a)huawei.com> ================================================================================================================ TODO [PATCH for-7.1 v2 00/39] Logging cleanup and per-thread logfiles Message-Id: <20220326132534.543738-1-richard.henderson(a)linaro.org> ======================================================================================================================================= TODO [PATCH 00/11] edk2: update to stable202202 Message-Id: <20220308145521.3106395-1-kraxel(a)redhat.com> ======================================================================================================= -- Alex Bennée

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linaro-toolchain April 2022