[PATCH] KVM: arm64: Move __hyp_set_vectors out of .hyp.text

[Marc Zyngier]

On 2021-01-28 17:38, Quentin Perret wrote:
> The .hyp.text section is supposed to be reserved for the nVHE EL2 code.
> However, there is currently one occurrence of EL1 executing code 
> located
> in .hyp.text when calling __hyp_{re}set_vectors(), which happen to sit
> next to the EL2 stub vectors. While not a problem yet, such patterns
> will cause issues when removing the host kernel from the TCB, so a
> cleaner split would be preferable.
> 
> Fix this by delimiting the end of the .hyp.text section in hyp-stub.S.
> 
> Signed-off-by: Quentin Perret <qperret at google.com>
> ---
>  arch/arm64/kernel/hyp-stub.S | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/kernel/hyp-stub.S 
> b/arch/arm64/kernel/hyp-stub.S
> index 160f5881a0b7..8a60f9c586bb 100644
> --- a/arch/arm64/kernel/hyp-stub.S
> +++ b/arch/arm64/kernel/hyp-stub.S
> @@ -85,6 +85,8 @@ SYM_CODE_END(\label)
>  	invalid_vector	el1_fiq_invalid
>  	invalid_vector	el1_error_invalid
> 
> +	.popsection
> +
>  /*
>   * __hyp_set_vectors: Call this after boot to set the initial 
> hypervisor
>   * vectors as part of hypervisor installation.  On an SMP system, this 
> should

Thanks for tracking this one down, Quentin.

Catalin, Will: should you want to take this one via the arm64 tree,
please add my

Acked-by: Marc Zyngier <maz:kernel.org>

Thanks,

         M.
-- 
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