Commit 0af0b189 authored Jan 30, 2013 by Marc Zyngier Committed by Mark Rutland Jun 07, 2013

ARM: hyp: initialize CNTVOFF to zero



In order to be able to use the virtual counter in a safe way,
make sure it is initialized to zero before dropping to SVC.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Dave Martin <dave.martin@linaro.org>

parent e4aa937e

arch/arm/kernel/hyp-stub.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -153,6 +153,8 @@ THUMB( orr r7, #(1 << 30) ) @ HSCTLR.TE
		mrc p15, 4, r7, c14, c1, 0 @ CNTHCTL
		orr r7, r7, #3 @ PL1PCEN \| PL1PCTEN
		mcr p15, 4, r7, c14, c1, 0 @ CNTHCTL
		mov r7, #0
		mcrr p15, 4, r7, r7, c14 @ CNTVOFF
		1:
		#endif