From: Mark Rutland Date: Wed, 14 Nov 2012 10:32:24 +0000 (+0000) Subject: arm: arch_timer: add arch_counter_set_user_access X-Git-Tag: v3.9-rc1~115^2~8^2^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2deabe3ba664a1ec47400c0ca285e951874e0cc;p=pandora-kernel.git arm: arch_timer: add arch_counter_set_user_access Several bits in CNTKCTL reset to 0, including PL0VTEN. For architectures using the generic timer which wish to have a fast gettimeofday vDSO implementation, these bits must be set to 1 by the kernel. For architectures without a vDSO, it's best to leave the bits set to 0 for now to ensure that if and when support is added, it's implemented sanely architecture wide. As the bootloader might set PL0VTEN to a value that doesn't correspond to that which the kernel prefers, we must explicitly set it to the architecture port's preferred value. This patch adds arch_counter_set_user_access, which sets the PL0 access permissions to that required by the architecture. For arch/arm, this currently means disabling all userspace access. Signed-off-by: Mark Rutland Acked-by: Catalin Marinas --- Reading git-diff-tree failed