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146c9ab38b
The new PowerPC VMX fast path (__copy_tofrom_user_power7_vmx) is not
exercised by existing copyloops selftests. This patch updates
the selftest to exercise the VMX variant, ensuring the VMX copy path
is validated.
Changes include:
- COPY_LOOP=test___copy_tofrom_user_power7_vmx with -D VMX_TEST is used
in existing selftest build targets.
- Inclusion of ../utils.c to provide get_auxv_entry() for hardware
feature detection.
- At runtime, the test skips execution if Altivec is not available.
- Copy sizes above VMX_COPY_THRESHOLD are used to ensure the VMX
path is taken.
This enables validation of the VMX fast path without affecting systems
that do not support Altivec.
Signed-off-by: Sayali Patil <sayalip@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260304122201.153049-2-sayalip@linux.ibm.com
72 lines
2.2 KiB
Makefile
72 lines
2.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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TEST_GEN_PROGS := copyuser_64_t0 copyuser_64_t1 copyuser_64_t2 \
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copyuser_p7 copyuser_p7_vmx \
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memcpy_64_t0 memcpy_64_t1 memcpy_64_t2 \
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memcpy_p7_t0 memcpy_p7_t1 copy_mc_64 \
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copyuser_64_exc_t0 copyuser_64_exc_t1 copyuser_64_exc_t2 \
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memmove_64
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EXTRA_SOURCES := validate.c ../harness.c stubs.S
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top_srcdir = ../../../../..
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include ../../lib.mk
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include ../flags.mk
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# The loops are all 64-bit code
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CFLAGS += -m64
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CFLAGS += -I$(CURDIR)
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CFLAGS += -D SELFTEST
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CFLAGS += -maltivec
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CFLAGS += -mcpu=power4
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# Use our CFLAGS for the implicit .S rule & set the asm machine type
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ASFLAGS = $(CFLAGS) -Wa,-mpower4
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$(OUTPUT)/copyuser_64_t%: copyuser_64.S $(EXTRA_SOURCES)
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test___copy_tofrom_user_base \
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-D SELFTEST_CASE=$(subst copyuser_64_t,,$(notdir $@)) \
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-o $@ $^
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$(OUTPUT)/copyuser_p7: copyuser_power7.S $(EXTRA_SOURCES)
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test___copy_tofrom_user_power7 \
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-o $@ $^
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$(OUTPUT)/copyuser_p7_vmx: copyuser_power7.S $(EXTRA_SOURCES) ../utils.c
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test___copy_tofrom_user_power7_vmx \
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-D VMX_TEST \
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-o $@ $^
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# Strictly speaking, we only need the memcpy_64 test cases for big-endian
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$(OUTPUT)/memcpy_64_t%: memcpy_64.S $(EXTRA_SOURCES)
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test_memcpy \
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-D SELFTEST_CASE=$(subst memcpy_64_t,,$(notdir $@)) \
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-o $@ $^
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$(OUTPUT)/memcpy_p7_t%: memcpy_power7.S $(EXTRA_SOURCES)
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test_memcpy_power7 \
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-D SELFTEST_CASE=$(subst memcpy_p7_t,,$(notdir $@)) \
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-o $@ $^
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$(OUTPUT)/copy_mc_64: copy_mc_64.S $(EXTRA_SOURCES)
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test_copy_mc_generic \
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-o $@ $^
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$(OUTPUT)/copyuser_64_exc_t%: copyuser_64.S exc_validate.c ../harness.c \
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copy_tofrom_user_reference.S stubs.S
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D COPY_LOOP=test___copy_tofrom_user_base \
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-D SELFTEST_CASE=$(subst copyuser_64_exc_t,,$(notdir $@)) \
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-o $@ $^
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$(OUTPUT)/memmove_64: mem_64.S memcpy_64.S memmove_validate.c ../harness.c \
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memcpy_stubs.S
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-D TEST_MEMMOVE=test_memmove \
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-o $@ $^
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