Add Kconfig options for testing AMD SEV related features. Signed-off-by: Vasant Karasulli <vkarasulli@xxxxxxx> --- arch/x86/Kbuild | 2 ++ arch/x86/Kconfig.debug | 16 ++++++++++++++++ arch/x86/kernel/Makefile | 7 +++++++ arch/x86/tests/Makefile | 1 + 4 files changed, 26 insertions(+) create mode 100644 arch/x86/tests/Makefile diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild index f384cb1a4f7a..90470c76866a 100644 --- a/arch/x86/Kbuild +++ b/arch/x86/Kbuild @@ -26,5 +26,7 @@ obj-y += net/ obj-$(CONFIG_KEXEC_FILE) += purgatory/ +obj-y += tests/ + # for cleaning subdir- += boot tools diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug index d3a6f74a94bd..e4f61af66816 100644 --- a/arch/x86/Kconfig.debug +++ b/arch/x86/Kconfig.debug @@ -279,3 +279,19 @@ endchoice config FRAME_POINTER depends on !UNWINDER_ORC && !UNWINDER_GUESS bool + +config X86_TESTS + bool "Tests for x86" + help + This enables building the tests under arch/x86/tests. + +if X86_TESTS +config AMD_SEV_TEST_VC + bool "Test for AMD SEV VC exception handling" + depends on AMD_MEM_ENCRYPT + select FUNCTION_TRACER + select KPROBES + select KUNIT + help + Enable KUnit-based testing for AMD SEV #VC exception handling. +endif # X86_TESTS diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 6aef9ee28a39..69472a576909 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -24,6 +24,13 @@ CFLAGS_REMOVE_sev.o = -pg CFLAGS_REMOVE_cc_platform.o = -pg endif +# AMD_SEV_TEST_VC registers a kprobe by function name. IPA-SRA creates +# function copies and renames them to have an .isra suffix, which breaks kprobes' +# lookup. Build with -fno-ipa-sra for the test. +ifdef CONFIG_AMD_SEV_TEST_VC +CFLAGS_sev.o += -fno-ipa-sra +endif + KASAN_SANITIZE_head$(BITS).o := n KASAN_SANITIZE_dumpstack.o := n KASAN_SANITIZE_dumpstack_$(BITS).o := n diff --git a/arch/x86/tests/Makefile b/arch/x86/tests/Makefile new file mode 100644 index 000000000000..f66554cd5c45 --- /dev/null +++ b/arch/x86/tests/Makefile @@ -0,0 +1 @@ +# SPDX-License-Identifier: GPL-2.0 -- 2.32.0
