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authorZhen Lei <thunder.leizhen@huawei.com>2018-07-12 17:28:43 +0800
committerWill Deacon <will.deacon@arm.com>2018-07-27 11:12:33 +0100
commita71792dee2a33d2e935d4b67dd63924f5ceb203d (patch)
treeda4d8a9ad7db123d88ddda6f9bd7ded1bb102615 /arch/x86/include
parent0d535967ac658966c6ade8f82b5799092f7d5441 (diff)
download96b-common-a71792dee2a33d2e935d4b67dd63924f5ceb203d.tar.gz
iommu/arm-smmu-v3: Prevent any devices access to memory without registration
Stream bypass is a potential security hole since a malicious device can be hotplugged in without matching any drivers, yet be granted the ability to access all of physical memory. Now that we attach devices to domains by default, we can toggle the disable_bypass default to "on", preventing DMA from unknown devices. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/x86/include')
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