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0c899c25d7
KVM special-cases writes to MSR_IA32_TSC so that all CPUs have the same base for the TSC. This logic is complicated, and we do not want it to have any effect once the VM is started. In particular, if any guest started to synchronize its TSCs with writes to MSR_IA32_TSC rather than MSR_IA32_TSC_ADJUST, the additional effect of kvm_write_tsc code would be uncharted territory. Therefore, this patch makes writes to MSR_IA32_TSC behave essentially the same as writes to MSR_IA32_TSC_ADJUST when they come from the guest. A new selftest (which passes both before and after the patch) checks the current semantics of writes to MSR_IA32_TSC and MSR_IA32_TSC_ADJUST originating from both the host and the guest. Upcoming work to remove the special side effects of host-initiated writes to MSR_IA32_TSC and MSR_IA32_TSC_ADJUST will be able to build onto this test, adjusting the host side to use the new APIs and achieve the same effect. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
135 lines
4.8 KiB
Makefile
135 lines
4.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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include ../../../../scripts/Kbuild.include
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all:
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top_srcdir = ../../../..
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KSFT_KHDR_INSTALL := 1
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# For cross-builds to work, UNAME_M has to map to ARCH and arch specific
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# directories and targets in this Makefile. "uname -m" doesn't map to
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# arch specific sub-directory names.
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#
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# UNAME_M variable to used to run the compiles pointing to the right arch
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# directories and build the right targets for these supported architectures.
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#
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# TEST_GEN_PROGS and LIBKVM are set using UNAME_M variable.
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# LINUX_TOOL_ARCH_INCLUDE is set using ARCH variable.
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#
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# x86_64 targets are named to include x86_64 as a suffix and directories
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# for includes are in x86_64 sub-directory. s390x and aarch64 follow the
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# same convention. "uname -m" doesn't result in the correct mapping for
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# s390x and aarch64.
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#
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# No change necessary for x86_64
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UNAME_M := $(shell uname -m)
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# Set UNAME_M for arm64 compile/install to work
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ifeq ($(ARCH),arm64)
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UNAME_M := aarch64
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endif
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# Set UNAME_M s390x compile/install to work
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ifeq ($(ARCH),s390)
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UNAME_M := s390x
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endif
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LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/sparsebit.c lib/test_util.c
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LIBKVM_x86_64 = lib/x86_64/processor.c lib/x86_64/vmx.c lib/x86_64/svm.c lib/x86_64/ucall.c
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LIBKVM_aarch64 = lib/aarch64/processor.c lib/aarch64/ucall.c
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LIBKVM_s390x = lib/s390x/processor.c lib/s390x/ucall.c
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TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
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TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test
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TEST_GEN_PROGS_x86_64 += x86_64/hyperv_cpuid
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TEST_GEN_PROGS_x86_64 += x86_64/mmio_warning_test
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TEST_GEN_PROGS_x86_64 += x86_64/platform_info_test
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TEST_GEN_PROGS_x86_64 += x86_64/set_sregs_test
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TEST_GEN_PROGS_x86_64 += x86_64/smm_test
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TEST_GEN_PROGS_x86_64 += x86_64/state_test
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TEST_GEN_PROGS_x86_64 += x86_64/vmx_preemption_timer_test
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TEST_GEN_PROGS_x86_64 += x86_64/svm_vmcall_test
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TEST_GEN_PROGS_x86_64 += x86_64/sync_regs_test
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TEST_GEN_PROGS_x86_64 += x86_64/vmx_close_while_nested_test
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TEST_GEN_PROGS_x86_64 += x86_64/vmx_dirty_log_test
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TEST_GEN_PROGS_x86_64 += x86_64/vmx_set_nested_state_test
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TEST_GEN_PROGS_x86_64 += x86_64/vmx_tsc_adjust_test
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TEST_GEN_PROGS_x86_64 += x86_64/xss_msr_test
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TEST_GEN_PROGS_x86_64 += x86_64/debug_regs
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TEST_GEN_PROGS_x86_64 += x86_64/tsc_msrs_test
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TEST_GEN_PROGS_x86_64 += x86_64/user_msr_test
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TEST_GEN_PROGS_x86_64 += clear_dirty_log_test
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TEST_GEN_PROGS_x86_64 += demand_paging_test
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TEST_GEN_PROGS_x86_64 += dirty_log_test
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TEST_GEN_PROGS_x86_64 += kvm_create_max_vcpus
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TEST_GEN_PROGS_x86_64 += set_memory_region_test
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TEST_GEN_PROGS_x86_64 += steal_time
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TEST_GEN_PROGS_aarch64 += clear_dirty_log_test
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TEST_GEN_PROGS_aarch64 += demand_paging_test
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TEST_GEN_PROGS_aarch64 += dirty_log_test
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TEST_GEN_PROGS_aarch64 += kvm_create_max_vcpus
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TEST_GEN_PROGS_aarch64 += set_memory_region_test
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TEST_GEN_PROGS_aarch64 += steal_time
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TEST_GEN_PROGS_s390x = s390x/memop
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TEST_GEN_PROGS_s390x += s390x/resets
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TEST_GEN_PROGS_s390x += s390x/sync_regs_test
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TEST_GEN_PROGS_s390x += demand_paging_test
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TEST_GEN_PROGS_s390x += dirty_log_test
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TEST_GEN_PROGS_s390x += kvm_create_max_vcpus
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TEST_GEN_PROGS_s390x += set_memory_region_test
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TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(UNAME_M))
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LIBKVM += $(LIBKVM_$(UNAME_M))
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INSTALL_HDR_PATH = $(top_srcdir)/usr
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LINUX_HDR_PATH = $(INSTALL_HDR_PATH)/include/
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LINUX_TOOL_INCLUDE = $(top_srcdir)/tools/include
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ifeq ($(ARCH),x86_64)
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LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/x86/include
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else
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LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include
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endif
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CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
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-fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \
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-I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \
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-I$(<D) -Iinclude/$(UNAME_M) -I..
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no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
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$(CC) -Werror -no-pie -x c - -o "$$TMP", -no-pie)
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# On s390, build the testcases KVM-enabled
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pgste-option = $(call try-run, echo 'int main() { return 0; }' | \
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$(CC) -Werror -Wl$(comma)--s390-pgste -x c - -o "$$TMP",-Wl$(comma)--s390-pgste)
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LDFLAGS += -pthread $(no-pie-option) $(pgste-option)
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# After inclusion, $(OUTPUT) is defined and
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# $(TEST_GEN_PROGS) starts with $(OUTPUT)/
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include ../lib.mk
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STATIC_LIBS := $(OUTPUT)/libkvm.a
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LIBKVM_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM))
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EXTRA_CLEAN += $(LIBKVM_OBJ) $(STATIC_LIBS) cscope.*
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x := $(shell mkdir -p $(sort $(dir $(LIBKVM_OBJ))))
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$(LIBKVM_OBJ): $(OUTPUT)/%.o: %.c
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$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c $< -o $@
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$(OUTPUT)/libkvm.a: $(LIBKVM_OBJ)
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$(AR) crs $@ $^
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x := $(shell mkdir -p $(sort $(dir $(TEST_GEN_PROGS))))
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all: $(STATIC_LIBS)
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$(TEST_GEN_PROGS): $(STATIC_LIBS)
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cscope: include_paths = $(LINUX_TOOL_INCLUDE) $(LINUX_HDR_PATH) include lib ..
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cscope:
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$(RM) cscope.*
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(find $(include_paths) -name '*.h' \
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-exec realpath --relative-base=$(PWD) {} \;; \
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find . -name '*.c' \
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-exec realpath --relative-base=$(PWD) {} \;) | sort -u > cscope.files
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cscope -b
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