29f0808816
This test is specific to MTE and verifies that the GCR_EL1 register is context switched correctly. It spawns 1024 processes and each process spawns 5 threads. Each thread writes a random setting of GCR_EL1 through the prctl() system call and reads it back verifying that it is the same. If the values are not the same it reports a failure. Note: The test has been extended to verify that even SYNC and ASYNC mode setting is preserved correctly over context switching. Link: https://lkml.kernel.org/r/b51a165426e906e7ec8a68d806ef3f8cd92581a6.1606161801.git.andreyknvl@google.com Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Branislav Rankov <Branislav.Rankov@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Cc: Marco Elver <elver@google.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
30 lines
793 B
Makefile
30 lines
793 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2020 ARM Limited
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CFLAGS += -std=gnu99 -I. -lpthread
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SRCS := $(filter-out mte_common_util.c,$(wildcard *.c))
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PROGS := $(patsubst %.c,%,$(SRCS))
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#Add mte compiler option
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ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep gcc),)
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CFLAGS += -march=armv8.5-a+memtag
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endif
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#check if the compiler works well
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mte_cc_support := $(shell if ($(CC) $(CFLAGS) -E -x c /dev/null -o /dev/null 2>&1) then echo "1"; fi)
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ifeq ($(mte_cc_support),1)
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# Generated binaries to be installed by top KSFT script
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TEST_GEN_PROGS := $(PROGS)
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# Get Kernel headers installed and use them.
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KSFT_KHDR_INSTALL := 1
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endif
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# Include KSFT lib.mk.
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include ../../lib.mk
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ifeq ($(mte_cc_support),1)
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$(TEST_GEN_PROGS): mte_common_util.c mte_common_util.h mte_helper.S
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endif
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