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| author | Marc Zyngier <Marc.Zyngier@arm.com> | 2013-01-30 18:17:49 (GMT) |
|---|---|---|
| committer | Mark Rutland <mark.rutland@arm.com> | 2013-06-07 09:20:27 (GMT) |
| commit | 0af0b189abf73d232af782df2f999235cd2fed7f (patch) | |
| tree | 69c6a762517b8db6fe6902cdac2f0ba3c16ec3d1 /arch/arm/kernel | |
| parent | e4aa937ec75df0eea0bee03bffa3303ad36c986b (diff) | |
| download | linux-0af0b189abf73d232af782df2f999235cd2fed7f.tar.xz | |
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>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/hyp-stub.S | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S index 1315c4c..dbe2110 100644 --- a/arch/arm/kernel/hyp-stub.S +++ b/arch/arm/kernel/hyp-stub.S @@ -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 |