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authorNayna Jain <nayna@linux.ibm.com>2020-03-09 03:57:51 +0300
committerMimi Zohar <zohar@linux.ibm.com>2020-03-12 14:43:57 +0300
commit9e2b4be377f0d715d9d910507890f9620cc22a9d (patch)
treeb837793b54687af1ab19e7957833182399ff3d7d /arch
parent96c82175d13879a0d465429419451eaad6e21258 (diff)
downloadlinux-9e2b4be377f0d715d9d910507890f9620cc22a9d.tar.xz
ima: add a new CONFIG for loading arch-specific policies
Every time a new architecture defines the IMA architecture specific functions - arch_ima_get_secureboot() and arch_ima_get_policy(), the IMA include file needs to be updated. To avoid this "noise", this patch defines a new IMA Kconfig IMA_SECURE_AND_OR_TRUSTED_BOOT option, allowing the different architectures to select it. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Nayna Jain <nayna@linux.ibm.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Philipp Rudo <prudo@linux.ibm.com> (s390) Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/s390/Kconfig1
-rw-r--r--arch/s390/kernel/Makefile2
-rw-r--r--arch/x86/Kconfig1
-rw-r--r--arch/x86/kernel/Makefile4
5 files changed, 5 insertions, 4 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 497b7d0b2d7e..5b9f1cba2a44 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -979,6 +979,7 @@ config PPC_SECURE_BOOT
bool
depends on PPC_POWERNV
depends on IMA_ARCH_POLICY
+ imply IMA_SECURE_AND_OR_TRUSTED_BOOT
help
Systems with firmware secure boot enabled need to define security
policies to extend secure boot to the OS. This config allows a user
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 8abe77536d9d..59c216af6264 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -195,6 +195,7 @@ config S390
select ARCH_HAS_FORCE_DMA_UNENCRYPTED
select SWIOTLB
select GENERIC_ALLOCATOR
+ imply IMA_SECURE_AND_OR_TRUSTED_BOOT
config SCHED_OMIT_FRAME_POINTER
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 2b1203cf7be6..578a6fa82ea4 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -70,7 +70,7 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o
obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o
obj-$(CONFIG_KEXEC_FILE) += kexec_elf.o
-obj-$(CONFIG_IMA) += ima_arch.o
+obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT) += ima_arch.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf_common.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf.o perf_cpum_sf.o
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index beea77046f9b..dcf5b1729f7c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -230,6 +230,7 @@ config X86
select VIRT_TO_BUS
select X86_FEATURE_NAMES if PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
+ imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI
config INSTRUCTION_DECODER
def_bool y
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 9b294c13809a..cfef37a27def 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -154,6 +154,4 @@ ifeq ($(CONFIG_X86_64),y)
obj-y += vsmp_64.o
endif
-ifdef CONFIG_EFI
-obj-$(CONFIG_IMA) += ima_arch.o
-endif
+obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT) += ima_arch.o