path: root/arch/arm64/lib/clear_user.S
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authorJames Morse <james.morse@arm.com>2016-02-05 14:58:49 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2016-02-18 17:27:05 +0000
commit644c2ae198412c956700e55a2acf80b2541f6aa5 (patch)
tree826a6a215b41ba92fed9d74257424cd8ad7de6c7 /arch/arm64/lib/clear_user.S
parentarm64: kernel: Add support for User Access Override (diff)
arm64: cpufeature: Test 'matches' pointer to find the end of the list
CPU feature code uses the desc field as a test to find the end of the list, this means every entry must have a description. This generates noise for entries in the list that aren't really features, but combinations of them. e.g. > CPU features: detected feature: Privileged Access Never > CPU features: detected feature: PAN and not UAO These combination features are needed for corner cases with alternatives, where cpu features interact. Change all walkers of the arm64_features[] and arm64_hwcaps[] lists to test 'matches' not 'desc', and only print 'desc' if it is non-NULL. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by : Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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