Re: [Qemu-devel] [PATCH v2 1/2] hw/intc/arm_gicv3: Fix decoding of ID register range

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 5/24/19 2:42 PM, Peter Maydell wrote:
> The GIC ID registers cover an area 0x30 bytes in size
> (12 registers, 4 bytes each). We were incorrectly decoding
> only the first 0x20 bytes.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  hw/intc/arm_gicv3_dist.c   | 4 ++--
>  hw/intc/arm_gicv3_redist.c | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/intc/arm_gicv3_dist.c b/hw/intc/arm_gicv3_dist.c
> index 53c55c57291..e6fe4905fd3 100644
> --- a/hw/intc/arm_gicv3_dist.c
> +++ b/hw/intc/arm_gicv3_dist.c
> @@ -533,7 +533,7 @@ static MemTxResult gicd_readl(GICv3State *s, hwaddr offset,
>          }
>          return MEMTX_OK;
>      }
> -    case GICD_IDREGS ... GICD_IDREGS + 0x1f:
> +    case GICD_IDREGS ... GICD_IDREGS + 0x2f:
>          /* ID registers */
>          *data = gicv3_idreg(offset - GICD_IDREGS);
>          return MEMTX_OK;
> @@ -744,7 +744,7 @@ static MemTxResult gicd_writel(GICv3State *s, hwaddr offset,
>          gicd_write_irouter(s, attrs, irq, r);
>          return MEMTX_OK;
>      }
> -    case GICD_IDREGS ... GICD_IDREGS + 0x1f:
> +    case GICD_IDREGS ... GICD_IDREGS + 0x2f:
>      case GICD_TYPER:
>      case GICD_IIDR:
>          /* RO registers, ignore the write */
> diff --git a/hw/intc/arm_gicv3_redist.c b/hw/intc/arm_gicv3_redist.c
> index 3b0ba6de1ab..8645220d618 100644
> --- a/hw/intc/arm_gicv3_redist.c
> +++ b/hw/intc/arm_gicv3_redist.c
> @@ -233,7 +233,7 @@ static MemTxResult gicr_readl(GICv3CPUState *cs, hwaddr offset,
>          }
>          *data = cs->gicr_nsacr;
>          return MEMTX_OK;
> -    case GICR_IDREGS ... GICR_IDREGS + 0x1f:
> +    case GICR_IDREGS ... GICR_IDREGS + 0x2f:
>          *data = gicv3_idreg(offset - GICR_IDREGS);
>          return MEMTX_OK;
>      default:
> @@ -363,7 +363,7 @@ static MemTxResult gicr_writel(GICv3CPUState *cs, hwaddr offset,
>          return MEMTX_OK;
>      case GICR_IIDR:
>      case GICR_TYPER:
> -    case GICR_IDREGS ... GICR_IDREGS + 0x1f:
> +    case GICR_IDREGS ... GICR_IDREGS + 0x2f:
>          /* RO registers, ignore the write */
>          qemu_log_mask(LOG_GUEST_ERROR,
>                        "%s: invalid guest write to RO register at offset "
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>