linux-kernel - Re: [PATCH v6 06/13] KVM: arm64: selftests: Split get-reg-list test code

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Message-ID: <CAJve8okJ-HYpsOrqH4Zvn7OBtwXWa4JumC+ZsMfHKB-deVYd2A@mail.gmail.com>
Date:   Tue, 25 Jul 2023 16:50:36 +0800
From:   Haibo Xu <xiaobo55x@...il.com>
To:     Haibo Xu <haibo1.xu@...el.com>
Cc:     ajones@...tanamicro.com, maz@...nel.org, oliver.upton@...ux.dev,
        seanjc@...gle.com, Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Shuah Khan <shuah@...nel.org>,
        James Morse <james.morse@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Zenghui Yu <yuzenghui@...wei.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Vipin Sharma <vipinsh@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Colton Lewis <coltonlewis@...gle.com>, kvm@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kselftest@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev
Subject: Re: [PATCH v6 06/13] KVM: arm64: selftests: Split get-reg-list test code

On Tue, Jul 25, 2023 at 4:37 PM Haibo Xu <haibo1.xu@...el.com> wrote:
>
> From: Andrew Jones <ajones@...tanamicro.com>
>
> Split the arch-neutral test code out of aarch64/get-reg-list.c into
> get-reg-list.c. To do this we invent a new make variable
> $(SPLIT_TESTS) which expects common parts to be in the KVM selftests
> root and the counterparts to have the same name, but be in
> $(ARCH_DIR).
>
> There's still some work to be done to de-aarch64 the common
> get-reg-list.c, but we leave that to the next patch to avoid
> modifying too much code while moving it.
>
> Signed-off-by: Andrew Jones <ajones@...tanamicro.com>
> Signed-off-by: Haibo Xu <haibo1.xu@...el.com>
> ---
>  tools/testing/selftests/kvm/Makefile          |  12 +-
>  .../selftests/kvm/aarch64/get-reg-list.c      | 367 +----------------
>  tools/testing/selftests/kvm/get-reg-list.c    | 377 ++++++++++++++++++
>  3 files changed, 398 insertions(+), 358 deletions(-)
>  create mode 100644 tools/testing/selftests/kvm/get-reg-list.c
>
> diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
> index c692cc86e7da..95f180e711d5 100644
> --- a/tools/testing/selftests/kvm/Makefile
> +++ b/tools/testing/selftests/kvm/Makefile
> @@ -140,7 +140,6 @@ TEST_GEN_PROGS_EXTENDED_x86_64 += x86_64/nx_huge_pages_test
>  TEST_GEN_PROGS_aarch64 += aarch64/aarch32_id_regs
>  TEST_GEN_PROGS_aarch64 += aarch64/arch_timer
>  TEST_GEN_PROGS_aarch64 += aarch64/debug-exceptions
> -TEST_GEN_PROGS_aarch64 += aarch64/get-reg-list
>  TEST_GEN_PROGS_aarch64 += aarch64/hypercalls
>  TEST_GEN_PROGS_aarch64 += aarch64/page_fault_test
>  TEST_GEN_PROGS_aarch64 += aarch64/psci_test
> @@ -152,6 +151,7 @@ TEST_GEN_PROGS_aarch64 += access_tracking_perf_test
>  TEST_GEN_PROGS_aarch64 += demand_paging_test
>  TEST_GEN_PROGS_aarch64 += dirty_log_test
>  TEST_GEN_PROGS_aarch64 += dirty_log_perf_test
> +TEST_GEN_PROGS_aarch64 += get-reg-list
>  TEST_GEN_PROGS_aarch64 += kvm_create_max_vcpus
>  TEST_GEN_PROGS_aarch64 += kvm_page_table_test
>  TEST_GEN_PROGS_aarch64 += memslot_modification_stress_test
> @@ -181,6 +181,8 @@ TEST_GEN_PROGS_riscv += kvm_page_table_test
>  TEST_GEN_PROGS_riscv += set_memory_region_test
>  TEST_GEN_PROGS_riscv += kvm_binary_stats_test
>
> +SPLIT_TESTS += get-reg-list
> +
>  TEST_PROGS += $(TEST_PROGS_$(ARCH_DIR))
>  TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(ARCH_DIR))
>  TEST_GEN_PROGS_EXTENDED += $(TEST_GEN_PROGS_EXTENDED_$(ARCH_DIR))
> @@ -228,11 +230,14 @@ LIBKVM_C_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_C))
>  LIBKVM_S_OBJ := $(patsubst %.S, $(OUTPUT)/%.o, $(LIBKVM_S))
>  LIBKVM_STRING_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_STRING))
>  LIBKVM_OBJS = $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ) $(LIBKVM_STRING_OBJ)
> +SPLIT_TESTS_TARGETS := $(patsubst %, $(OUTPUT)/%, $(SPLIT_TESTS))
> +SPLIT_TESTS_OBJS := $(patsubst %, $(ARCH_DIR)/%.o, $(SPLIT_TESTS))
>
>  TEST_GEN_OBJ = $(patsubst %, %.o, $(TEST_GEN_PROGS))
>  TEST_GEN_OBJ += $(patsubst %, %.o, $(TEST_GEN_PROGS_EXTENDED))
>  TEST_DEP_FILES = $(patsubst %.o, %.d, $(TEST_GEN_OBJ))
>  TEST_DEP_FILES += $(patsubst %.o, %.d, $(LIBKVM_OBJS))
> +TEST_DEP_FILES += $(patsubst %.o, %.d, $(SPLIT_TESTS_OBJS))
>  -include $(TEST_DEP_FILES)
>
>  $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): %: %.o
> @@ -240,7 +245,10 @@ $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): %: %.o
>  $(TEST_GEN_OBJ): $(OUTPUT)/%.o: %.c
>         $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
>
> -EXTRA_CLEAN += $(LIBKVM_OBJS) $(TEST_DEP_FILES) $(TEST_GEN_OBJ) cscope.*
> +$(SPLIT_TESTS_TARGETS): %: %.o $(SPLIT_TESTS_OBJS)
> +       $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH) $^ $(LDLIBS) -o $@
> +
> +EXTRA_CLEAN += $(LIBKVM_OBJS) $(TEST_DEP_FILES) $(TEST_GEN_OBJ) $(SPLIT_TESTS_OBJS) cscope.*
>
>  x := $(shell mkdir -p $(sort $(dir $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ))))
>  $(LIBKVM_C_OBJ): $(OUTPUT)/%.o: %.c

Hi @Andrew Jones,

After rebasing to v6.5-rc3, some changes are needed to the SPLIT_TESTS
target, or the make would fail.
Please help have a look.

Regards,
Haibo