Re: [PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-12 Thread Michael Ellerman
Nayna Jain  writes:
> From: Nayna Jain 
>
> 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 
> Signed-off-by: Nayna Jain 
> Acked-by: Ard Biesheuvel 
> Cc: Ard Biesheuvel 
> Cc: Philipp Rudo 
> Cc: Michael Ellerman 
> ---
> v3:
> * Removes CONFIG_IMA dependency. Thanks Ard.
> * Updated the patch with improvements suggested by Michael. It now uses
> "imply" instead of "select". Thanks Michael.

Acked-by: Michael Ellerman  (powerpc)

cheers


Re: [PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-11 Thread Philipp Rudo
On Sun,  8 Mar 2020 20:57:51 -0400
Nayna Jain  wrote:

> From: Nayna Jain 
> 
> 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 
> Signed-off-by: Nayna Jain 
> Acked-by: Ard Biesheuvel 
> Cc: Ard Biesheuvel 
> Cc: Philipp Rudo 
> Cc: Michael Ellerman 
> ---
> v3:
> * Removes CONFIG_IMA dependency. Thanks Ard.
> * Updated the patch with improvements suggested by Michael. It now uses
> "imply" instead of "select". Thanks Michael.
> * Replaced the CONFIG_IMA in x86 and s390 with new config, else it was
> resulting in redefinition when the IMA_SECURE_AND_OR_TRUSTED_BOOT
> is not enabled. Thanks to Mimi for identifying the problem.
> * Removed "#ifdef EFI" check in the arch/x86/Makefile for compiling
> ima_arch.c file.
> * Ard, Thanks for your Acked-by. I have changed the arch/x86/Makefile in
> this version. Can you please review again and confirm ?
> * Rudo, Thanks for your review. I have changed arch/s390/Makefile as well.
> Can you also please review again ?

Looks good to me

for the s390 part
Acked-by: Philipp Rudo 

Thanks
Philipp

> 
> v2:
> * Fixed the issue identified by Mimi. Thanks Mimi, Ard, Heiko and Michael for
> discussing the fix.
> 
>  arch/powerpc/Kconfig   | 1 +
>  arch/s390/Kconfig  | 1 +
>  arch/s390/kernel/Makefile  | 2 +-
>  arch/x86/Kconfig   | 1 +
>  arch/x86/kernel/Makefile   | 4 +---
>  include/linux/ima.h| 3 +--
>  security/integrity/ima/Kconfig | 7 +++
>  7 files changed, 13 insertions(+), 6 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-$(CONFIG_PERF_EVENTS)+= perf_cpum_cf.o perf_cpum_sf.o
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index beea77046f9b..dcf5b1729f7c 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -230,6 +230,7 @@ config X86
>   select VIRT_TO_BUS
>   select X86_FEATURE_NAMESif PROC_FS
>   select PROC_PID_ARCH_STATUS if PROC_FS
> + imply IMA_SECURE_AND_OR_TRUSTED_BOOTif EFI
>  
>  config INSTRUCTION_DECODER
>   def_bool y
> diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
> index 9b294c13809a..cfef37a27def 100644
> --- a/arch/x86/kernel/Makefile
> +++ b/arch/x86/kernel/Makefile
> @@ -154,6 +154,4 @@ ifeq ($(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
> diff --git a/include/linux/ima.h b/include/linux/ima.h
> index 1659217e9b60..aefe758f4466 100644
> --- a/include/linux/ima.h
> +++ b/include/linux/ima.h
> @@ -30,8 +30,7 @@ extern void ima_kexec_cmdline(const void *buf, int size);
>  extern void ima_add_kexec_buffer(struct kimage *image);
>  #endif
>  
> -#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \
> - || defined(CONFIG_PPC_SECURE_BOOT)
> +#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
>  extern bool arch_ima_get_secureboot(void);
>  extern const char * const *arch_get_ima_policy(void);
>  #else
> diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
> index 3f3ee4e2eb0d..edde88dbe576 100644
> --- a/security/integrity/ima/Kconfig
> +++ b/security/integrity/ima/Kconfig
> @@ -327,3 +327,10 @@ config 

Re: [PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-11 Thread Mimi Zohar
On Sun, 2020-03-08 at 20:57 -0400, Nayna Jain wrote:
> From: Nayna Jain 
> 
> 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 
> Signed-off-by: Nayna Jain 
> Acked-by: Ard Biesheuvel 
> Cc: Philipp Rudo 
> Cc: Michael Ellerman 

Thanks, Michael for the suggestion of using "imply".  Seems to be
working nicely.  Thanks, Nayna.  I pushed this patch out to next-
integrity-testing.  Could we get some tags on this version of the
patch?

thanks,

Mimi



[PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-08 Thread Nayna Jain
From: Nayna Jain 

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 
Signed-off-by: Nayna Jain 
Acked-by: Ard Biesheuvel 
Cc: Ard Biesheuvel 
Cc: Philipp Rudo 
Cc: Michael Ellerman 
---
v3:
* Removes CONFIG_IMA dependency. Thanks Ard.
* Updated the patch with improvements suggested by Michael. It now uses
"imply" instead of "select". Thanks Michael.
* Replaced the CONFIG_IMA in x86 and s390 with new config, else it was
resulting in redefinition when the IMA_SECURE_AND_OR_TRUSTED_BOOT
is not enabled. Thanks to Mimi for identifying the problem.
* Removed "#ifdef EFI" check in the arch/x86/Makefile for compiling
ima_arch.c file.
* Ard, Thanks for your Acked-by. I have changed the arch/x86/Makefile in
this version. Can you please review again and confirm ?
* Rudo, Thanks for your review. I have changed arch/s390/Makefile as well.
Can you also please review again ?

v2:
* Fixed the issue identified by Mimi. Thanks Mimi, Ard, Heiko and Michael for
discussing the fix.

 arch/powerpc/Kconfig   | 1 +
 arch/s390/Kconfig  | 1 +
 arch/s390/kernel/Makefile  | 2 +-
 arch/x86/Kconfig   | 1 +
 arch/x86/kernel/Makefile   | 4 +---
 include/linux/ima.h| 3 +--
 security/integrity/ima/Kconfig | 7 +++
 7 files changed, 13 insertions(+), 6 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_NAMESif PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
+   imply IMA_SECURE_AND_OR_TRUSTED_BOOTif 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
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 1659217e9b60..aefe758f4466 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -30,8 +30,7 @@ extern void ima_kexec_cmdline(const void *buf, int size);
 extern void ima_add_kexec_buffer(struct kimage *image);
 #endif
 
-#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \
-   || defined(CONFIG_PPC_SECURE_BOOT)
+#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
 extern bool arch_ima_get_secureboot(void);
 extern const char * const *arch_get_ima_policy(void);
 #else
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 3f3ee4e2eb0d..edde88dbe576 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -327,3 +327,10 @@ config IMA_QUEUE_EARLY_BOOT_KEYS
depends on IMA_MEASURE_ASYMMETRIC_KEYS
depends on SYSTEM_TRUSTED_KEYRING
default y
+
+config IMA_SECURE_AND_OR_TRUSTED_BOOT
+   bool
+   depends on IMA_ARCH_POLICY
+   help
+  This option is selected by architectures to enable secure and/or
+  trusted boot 

Re: [PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-06 Thread Nayna

Oops,  Please ignore this patch.

By mistake I posted the wrong version. I am sorry for the confusion,  I 
will resend the right version.


Thanks & Regards,

 - Nayna

On 3/6/20 12:39 PM, Nayna Jain wrote:

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 
Signed-off-by: Nayna Jain 
Cc: Ard Biesheuvel 
Cc: Philipp Rudo 
Cc: Michael Ellerman 
---
v3:
* Updated and tested the patch with improvements suggested by Michael.
It now uses "imply" instead of "select". Thanks Michael.
* Have missed replacing the CONFIG_IMA in x86 and s390 with new config,
that was resulting in redefinition when the IMA_SECURE_AND_OR_TRUSTED_BOOT
is not enabled. Thanks to Mimi for recognizing the problem.

v2:
* Fixed the issue identified by Mimi. Thanks Mimi, Ard, Heiko and Michael for
discussing the fix.

  arch/powerpc/Kconfig   | 1 +
  arch/s390/Kconfig  | 1 +
  arch/s390/kernel/Makefile  | 2 +-
  arch/x86/Kconfig   | 1 +
  arch/x86/kernel/Makefile   | 2 +-
  include/linux/ima.h| 3 +--
  security/integrity/ima/Kconfig | 8 
  7 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 497b7d0b2d7e..a5cfde432983 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
+   select 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..4a502fbcb800 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
+   select IMA_SECURE_AND_OR_TRUSTED_BOOT if IMA_ARCH_POLICY
  
  
  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..7f5bfaf0cbd2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -230,6 +230,7 @@ config X86
select VIRT_TO_BUS
select X86_FEATURE_NAMESif PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
+   select IMA_SECURE_AND_OR_TRUSTED_BOOT   if EFI && IMA_ARCH_POLICY
  
  config INSTRUCTION_DECODER

def_bool y
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 9b294c13809a..7f131ceba136 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -155,5 +155,5 @@ ifeq ($(CONFIG_X86_64),y)
  endif
  
  ifdef CONFIG_EFI

-obj-$(CONFIG_IMA)  += ima_arch.o
+obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT)   += ima_arch.o
  endif
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 1659217e9b60..aefe758f4466 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -30,8 +30,7 @@ extern void ima_kexec_cmdline(const void *buf, int size);
  extern void ima_add_kexec_buffer(struct kimage *image);
  #endif
  
-#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \

-   || defined(CONFIG_PPC_SECURE_BOOT)
+#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
  extern bool arch_ima_get_secureboot(void);
  extern const char * const *arch_get_ima_policy(void);
  #else
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 3f3ee4e2eb0d..2baaf196c6d8 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -327,3 +327,11 @@ config IMA_QUEUE_EARLY_BOOT_KEYS
depends on IMA_MEASURE_ASYMMETRIC_KEYS
depends on SYSTEM_TRUSTED_KEYRING
default y
+
+config IMA_SECURE_AND_OR_TRUSTED_BOOT
+   bool
+   depends on IMA_ARCH_POLICY
+   default n
+   help
+  This option is selected by architectures to enable secure and/or
+  trusted boot based on IMA runtime policies.


[PATCH v3] ima: add a new CONFIG for loading arch-specific policies

2020-03-06 Thread Nayna Jain
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 
Signed-off-by: Nayna Jain 
Cc: Ard Biesheuvel 
Cc: Philipp Rudo 
Cc: Michael Ellerman 
---
v3:
* Updated and tested the patch with improvements suggested by Michael.
It now uses "imply" instead of "select". Thanks Michael.
* Have missed replacing the CONFIG_IMA in x86 and s390 with new config,
that was resulting in redefinition when the IMA_SECURE_AND_OR_TRUSTED_BOOT
is not enabled. Thanks to Mimi for recognizing the problem.

v2:
* Fixed the issue identified by Mimi. Thanks Mimi, Ard, Heiko and Michael for
discussing the fix.

 arch/powerpc/Kconfig   | 1 +
 arch/s390/Kconfig  | 1 +
 arch/s390/kernel/Makefile  | 2 +-
 arch/x86/Kconfig   | 1 +
 arch/x86/kernel/Makefile   | 2 +-
 include/linux/ima.h| 3 +--
 security/integrity/ima/Kconfig | 8 
 7 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 497b7d0b2d7e..a5cfde432983 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
+   select 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..4a502fbcb800 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
+   select IMA_SECURE_AND_OR_TRUSTED_BOOT if IMA_ARCH_POLICY
 
 
 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..7f5bfaf0cbd2 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -230,6 +230,7 @@ config X86
select VIRT_TO_BUS
select X86_FEATURE_NAMESif PROC_FS
select PROC_PID_ARCH_STATUS if PROC_FS
+   select IMA_SECURE_AND_OR_TRUSTED_BOOT   if EFI && IMA_ARCH_POLICY
 
 config INSTRUCTION_DECODER
def_bool y
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 9b294c13809a..7f131ceba136 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -155,5 +155,5 @@ ifeq ($(CONFIG_X86_64),y)
 endif
 
 ifdef CONFIG_EFI
-obj-$(CONFIG_IMA)  += ima_arch.o
+obj-$(CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT)   += ima_arch.o
 endif
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 1659217e9b60..aefe758f4466 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -30,8 +30,7 @@ extern void ima_kexec_cmdline(const void *buf, int size);
 extern void ima_add_kexec_buffer(struct kimage *image);
 #endif
 
-#if (defined(CONFIG_X86) && defined(CONFIG_EFI)) || defined(CONFIG_S390) \
-   || defined(CONFIG_PPC_SECURE_BOOT)
+#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
 extern bool arch_ima_get_secureboot(void);
 extern const char * const *arch_get_ima_policy(void);
 #else
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 3f3ee4e2eb0d..2baaf196c6d8 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -327,3 +327,11 @@ config IMA_QUEUE_EARLY_BOOT_KEYS
depends on IMA_MEASURE_ASYMMETRIC_KEYS
depends on SYSTEM_TRUSTED_KEYRING
default y
+
+config IMA_SECURE_AND_OR_TRUSTED_BOOT
+   bool
+   depends on IMA_ARCH_POLICY
+   default n
+   help
+  This option is selected by architectures to enable secure and/or
+  trusted boot based on IMA runtime policies.
-- 
2.18.1