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authorSuzuki K Poulose <[email protected]>2016-11-08 13:56:20 +0000
committerCatalin Marinas <[email protected]>2016-11-16 17:50:51 +0000
commita4023f682739439b434165b54af7cb3676a4766e (patch)
treeef2638d37291c56d972f20b69c59a6dee9292c18 /lib/stackdepot.c
parentc02433dd6de32f042cf3ffe476746b1115b8c096 (diff)
arm64: Add hypervisor safe helper for checking constant capabilities
The hypervisor may not have full access to the kernel data structures and hence cannot safely use cpus_have_cap() helper for checking the system capability. Add a safe helper for hypervisors to check a constant system capability, which *doesn't* fall back to checking the bitmap maintained by the kernel. With this, make the cpus_have_cap() only check the bitmask and force constant cap checks to use the new API for quicker checks. Cc: Robert Ritcher <[email protected]> Cc: Tirumalesh Chalamarla <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> Reviewed-by: Will Deacon <[email protected]> Reviewed-by: Marc Zyngier <[email protected]> Signed-off-by: Catalin Marinas <[email protected]>
Diffstat (limited to 'lib/stackdepot.c')
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