Will Deacon f84a935db4 arm64: vdso: check sequence counter even for coarse realtime operations ... When returning coarse realtime values from clock_gettime, we must still check the sequence counter to ensure that the kernel does not update the vdso datapage whilst we are loading the coarse timespec as this could potentially result in time appearing to go backwards. This patch delays the coarse realtime check until after we have loaded successfully from the vdso datapage. This does mean that we always load the wtm timespec, but conditionalising the load and adding an extra sequence test is unlikely to buy us anything other than messy code, particularly as the sequence test implies a read barrier. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2012-12-05 11:20:03 +00:00
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boot	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
configs	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
include	arm64: Make !dirty ptes read-only	2012-11-29 15:32:13 +00:00
kernel	arm64: vdso: check sequence counter even for coarse realtime operations	2012-12-05 11:20:03 +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: Remove incorrect Kconfig symbol HAVE_SPARSE_IRQ	2012-11-29 16:53:35 +00:00
Kconfig.debug	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
Makefile	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00