Will Deacon a6fadf7e67 arm64: mm: introduce present, faulting entries for PAGE_NONE ... This is mostly a port of dbf62d5006 ("ARM: mm: introduce L_PTE_VALID for page table entries") and 26ffd0d43b ("ARM: mm: introduce present, faulting entries for PAGE_NONE") from ARM, which makes use of present, faulting page table entries for page table entries mapped as PROT_NONE. The main difference with this implementation is that we can make use of the two pte type bits in order to avoid allocating a software bit for identifying PROT_NONE pages, instead reserving the 10b suffix for these types of mappings. This is required to prevent users from accessing such pages via syscalls such as read/write over a pipe. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2013-01-10 10:48:48 +00:00
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boot	arm64: Add dtbs target for building all the enabled dtb files	2012-12-03 17:17:21 -06:00
configs	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
include	arm64: mm: introduce present, faulting entries for PAGE_NONE	2013-01-10 10:48:48 +00:00
kernel	arm64: vdso: remove broken, redundant sequence counting for timezones	2013-01-10 10:43:43 +00:00
lib	arm64: Miscellaneous library functions	2012-09-17 13:42:18 +01:00
mm	arm64: Convert empty flush_cache_{mm,page} functions to static inline	2012-11-23 18:15:32 +00:00
Kconfig	arm64: Always select ARM_AMBA and GENERIC_GPIO	2013-01-04 13:20:09 +00:00
Kconfig.debug	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
Makefile	arm64: Fix the dtbs target building	2012-12-10 20:24:57 -06:00