On Wed, Feb 22, 2017 at 09:38:21AM +0000, Ard Biesheuvel wrote:
> Enable the hardware stack alignment check, as mandated by the UEFI spec.
> This ensures that the stack pointer is 16 byte aligned at each instance
> where it is used as the base address in a load/store operation.
>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
> ---
> ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c
> index 9e0593ce598b..2f8f99d44a31 100644
> --- a/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c
> +++ b/ArmPkg/Library/ArmMmuLib/AArch64/ArmMmuLibCore.c
> @@ -734,6 +734,7 @@ ArmConfigureMmu (
> MAIR_ATTR(TT_ATTR_INDX_MEMORY_WRITE_BACK, MAIR_ATTR_NORMAL_MEMORY_WRITE_BACK)); // mapped to EFI_MEMORY_WB
>
> ArmDisableAlignmentCheck ();
> + ArmEnableStackAlignmentCheck ();
> ArmEnableInstructionCache ();
> ArmEnableDataCache ();
>
> --
> 2.7.4
>
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