Re: [PATCH 4/4] ppc/pnv: Return zero for core thread state xscom

[Cédric Le Goater]

On 6/30/23 05:55, Joel Stanley wrote:
> Firmware now warns if booting in LPAR per core mode (PPC bit 62). So
> this warning doesn't trigger report the core thread state is 0.
>
> Signed-off-by: Joel Stanley <joel@jms.id.au>


Reviewed-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.

> ---
>   hw/ppc/pnv_core.c | 10 ++++++++++
>   1 file changed, 10 insertions(+)
>
> diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
> index 7fff2fd9e298..98356d7f6538 100644
> --- a/hw/ppc/pnv_core.c
> +++ b/hw/ppc/pnv_core.c
> @@ -116,6 +116,8 @@ static const MemoryRegionOps pnv_core_power8_xscom_ops = {
>   #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
>   #define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
>   
> +#define PNV9_XSCOM_EC_CORE_THREAD_STATE    0x10ab3
> +
>   static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
>                                              unsigned int width)
>   {
> @@ -134,6 +136,9 @@ static uint64_t pnv_core_power9_xscom_read(void *opaque, 
> hwaddr addr,
>       case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
>           val = 0x0;
>           break;
> +    case PNV9_XSCOM_EC_CORE_THREAD_STATE:
> +        val = 0;
> +        break;
>       default:
>           qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
>                     addr);
> @@ -408,6 +413,8 @@ static const MemoryRegionOps pnv_quad_power9_xscom_ops = {
>    * POWER10 Quads
>    */
>   
> +#define PNV10_XSCOM_EC_PC_PMC_CORE_THREAD_STATE 0x28412
> +
>   static uint64_t pnv_quad_power10_xscom_read(void *opaque, hwaddr addr,
>                                               unsigned int width)
>   {
> @@ -415,6 +422,9 @@ static uint64_t pnv_quad_power10_xscom_read(void *opaque, 
> hwaddr addr,
>       uint64_t val = -1;
>   
>       switch (offset) {
> +    case PNV10_XSCOM_EC_PC_PMC_CORE_THREAD_STATE:
> +        val = 0;
> +        break;
>       default:
>           qemu_log_mask(LOG_UNIMP, "%s: writing @0x%08x\n", __func__,
>                         offset);