[PATCH REPOST v2] ARM: virt: fix wrong HSCTLR.EE bit setting
Marc Zyngier
marc.zyngier at arm.com
Wed Jul 2 07:38:36 PDT 2014
On 01/07/14 11:01, john.liuli wrote:
> From: Li Liu <john.liuli at huawei.com>
>
> HSCTLR.EE is defined as bit[25] referring to arm manual
> DDI0606C.b(p1590).
>
> Reviewed-by: Marc Zyngier <marc.zyngier at arm.com>
> Signed-off-by: Li Liu <john.liuli at huawei.com>
> ---
> changes v1 -> v2:
> 1)Use the canonical syntax for orr (orr r7, r7, #(1 << 25))
> 2)Use the ARM_BE8 macro instead of the open-coded CONFIG_CPU_BIG_ENDIAN
>
> arch/arm/kernel/hyp-stub.S | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/arch/arm/kernel/hyp-stub.S b/arch/arm/kernel/hyp-stub.S
> index 797b1a6..7e666cf 100644
> --- a/arch/arm/kernel/hyp-stub.S
> +++ b/arch/arm/kernel/hyp-stub.S
> @@ -134,9 +134,7 @@ ENTRY(__hyp_stub_install_secondary)
> mcr p15, 4, r7, c1, c1, 3 @ HSTR
>
> THUMB( orr r7, #(1 << 30) ) @ HSCTLR.TE
> -#ifdef CONFIG_CPU_BIG_ENDIAN
> - orr r7, #(1 << 9) @ HSCTLR.EE
> -#endif
> +ARM_BE8(orr r7, r7, #(1 << 25)) @ HSCTLR.EE
> mcr p15, 4, r7, c1, c0, 0 @ HSCTLR
>
> mrc p15, 4, r7, c1, c1, 1 @ HDCR
>
Russell,
Assuming you're happy with this patch, would you agree to it going
through the KVM/ARM tree? We have a whole bunch of BE patches queued up,
and this is a looks like a better fix than what we have so far [1].
Thanks,
M.
[1]: https://lists.cs.columbia.edu/pipermail/kvmarm/2014-June/009950.html
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