arm64: documentation: tighten up tagged pointer documentation
authorWill Deacon <will.deacon@arm.com>
Tue, 17 Sep 2013 10:46:23 +0000 (11:46 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 20 Sep 2013 08:56:06 +0000 (09:56 +0100)
commit374ed9d18e658704235b84a60589888ca52ab0fe
treefe87e717b8ccf75eb57fd693786f6fab21413cf9
parent59f67e16e6b79697241c3fd030e3da300377893e
arm64: documentation: tighten up tagged pointer documentation

Commit d50240a5f6ce ("arm64: mm: permit use of tagged pointers at EL0")
added support for tagged pointers in userspace, but the corresponding
update to Documentation/ contained some imprecise statements.

This patch fixes up some minor ambiguities in the text, hopefully making
it more clear about exactly what the kernel expects from user virtual
addresses.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Documentation/arm64/tagged-pointers.txt