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Add iommu.passthrough check
author
Alexander Popov
<alex.popov@linux.com>
Mon, 11 Jul 2022 06:59:26 +0000
(09:59 +0300)
committer
Alexander Popov
<alex.popov@linux.com>
Mon, 11 Jul 2022 06:59:26 +0000
(09:59 +0300)
kconfig_hardened_check/__init__.py
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diff --git
a/kconfig_hardened_check/__init__.py
b/kconfig_hardened_check/__init__.py
index 28a661c56edb56b4d545a87ea8a80ce5c782534e..0d6a470e9b4487837d8e15d6c98b74bc6361de3e 100644
(file)
--- a/
kconfig_hardened_check/__init__.py
+++ b/
kconfig_hardened_check/__init__.py
@@
-13,7
+13,6
@@
# N.B Hardening command line parameters:
# page_alloc.shuffle=1
# iommu=force (does it help against DMA attacks?)
# N.B Hardening command line parameters:
# page_alloc.shuffle=1
# iommu=force (does it help against DMA attacks?)
-# iommu.passthrough=0
# slub_debug=FZ (slow)
# loadpin.enforce=1
# debugfs=no-mount (or off if possible)
# slub_debug=FZ (slow)
# loadpin.enforce=1
# debugfs=no-mount (or off if possible)
@@
-662,6
+661,9
@@
def add_cmdline_checks(l, arch):
l += [OR(CmdlineCheck('self_protection', 'kspp', 'iommu.strict', '1'),
AND(KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_DMA_STRICT', 'y'),
CmdlineCheck('self_protection', 'kspp', 'iommu.strict', 'is not set')))]
l += [OR(CmdlineCheck('self_protection', 'kspp', 'iommu.strict', '1'),
AND(KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_DMA_STRICT', 'y'),
CmdlineCheck('self_protection', 'kspp', 'iommu.strict', 'is not set')))]
+ l += [OR(CmdlineCheck('self_protection', 'kspp', 'iommu.passthrough', '0'),
+ AND(KconfigCheck('self_protection', 'kspp', 'IOMMU_DEFAULT_PASSTHROUGH', 'is not set'),
+ CmdlineCheck('self_protection', 'kspp', 'iommu.passthrough', 'is not set')))]
if arch in ('X86_64', 'ARM64', 'X86_32'):
l += [OR(CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', '1'),
AND(KconfigCheck('self_protection', 'kspp', 'RANDOMIZE_KSTACK_OFFSET_DEFAULT', 'y'),
if arch in ('X86_64', 'ARM64', 'X86_32'):
l += [OR(CmdlineCheck('self_protection', 'kspp', 'randomize_kstack_offset', '1'),
AND(KconfigCheck('self_protection', 'kspp', 'RANDOMIZE_KSTACK_OFFSET_DEFAULT', 'y'),