On Thu, 29 Jun 2023 at 22:47, Jeff Brasen via groups.io
<jbrasen=nvidia....@groups.io> wrote:
>
> Add EFI_NOT_READY return if the CPU can not be enabled if the
> processor is already on.
>
> This can occur in normal use if the CPU is still being turned off from
> a previous call when this is called again.
>
> Signed-off-by: Jeff Brasen <jbra...@nvidia.com>
Acked-by: Ard Biesheuvel <a...@kernel.org>
I'll queue this up - thanks.
> ---
> ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> b/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> index f822a9877c..e7f4223513 100644
> --- a/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> +++ b/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> @@ -103,7 +103,9 @@ DispatchCpu (
>
> ArmCallSmc (&Args);
>
> - if (Args.Arg0 != ARM_SMC_PSCI_RET_SUCCESS) {
> + if (Args.Arg0 == ARM_SMC_PSCI_RET_ALREADY_ON) {
> + Status = EFI_NOT_READY;
> + } else if (Args.Arg0 != ARM_SMC_PSCI_RET_SUCCESS) {
> DEBUG ((DEBUG_ERROR, "PSCI_CPU_ON call failed: %d\n", Args.Arg0));
> Status = EFI_DEVICE_ERROR;
> }
> --
> 2.25.1
>
>
>
>
>
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