Re: [PATCH v2 2/4] hw/arm/pxa2xx: Replace hw_error() by qemu_log_mask()

[Alistair Francis <alistair23@gmail.com>]

On Mon, May 18, 2020 at 7:03 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
>
> hw_error() calls exit(). This a bit overkill when we can log
> the accesses as unimplemented or guest error.
>
> When fuzzing the devices, we don't want the whole process to
> exit. Replace some hw_error() calls by qemu_log_mask().
>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  hw/arm/pxa2xx_gpio.c    |  7 ++++---
>  hw/display/pxa2xx_lcd.c |  8 +++++---
>  hw/dma/pxa2xx_dma.c     | 14 +++++++++-----
>  3 files changed, 18 insertions(+), 11 deletions(-)
>
> diff --git a/hw/arm/pxa2xx_gpio.c b/hw/arm/pxa2xx_gpio.c
> index f8df3cc227..a01db54a51 100644
> --- a/hw/arm/pxa2xx_gpio.c
> +++ b/hw/arm/pxa2xx_gpio.c
> @@ -9,7 +9,6 @@
>
>  #include "qemu/osdep.h"
>  #include "cpu.h"
> -#include "hw/hw.h"
>  #include "hw/irq.h"
>  #include "hw/qdev-properties.h"
>  #include "hw/sysbus.h"
> @@ -199,7 +198,8 @@ static uint64_t pxa2xx_gpio_read(void *opaque, hwaddr offset,
>          return s->status[bank];
>
>      default:
> -        hw_error("%s: Bad offset " REG_FMT "\n", __func__, offset);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                      __func__, offset);
>      }
>
>      return 0;
> @@ -252,7 +252,8 @@ static void pxa2xx_gpio_write(void *opaque, hwaddr offset,
>          break;
>
>      default:
> -        hw_error("%s: Bad offset " REG_FMT "\n", __func__, offset);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                      __func__, offset);
>      }
>  }
>
> diff --git a/hw/display/pxa2xx_lcd.c b/hw/display/pxa2xx_lcd.c
> index 464e93161a..d5f2e82a4e 100644
> --- a/hw/display/pxa2xx_lcd.c
> +++ b/hw/display/pxa2xx_lcd.c
> @@ -11,7 +11,7 @@
>   */
>
>  #include "qemu/osdep.h"
> -#include "hw/hw.h"
> +#include "qemu/log.h"
>  #include "hw/irq.h"
>  #include "migration/vmstate.h"
>  #include "ui/console.h"
> @@ -407,7 +407,8 @@ static uint64_t pxa2xx_lcdc_read(void *opaque, hwaddr offset,
>
>      default:
>      fail:
> -        hw_error("%s: Bad offset " REG_FMT "\n", __func__, offset);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                      __func__, offset);
>      }
>
>      return 0;
> @@ -562,7 +563,8 @@ static void pxa2xx_lcdc_write(void *opaque, hwaddr offset,
>
>      default:
>      fail:
> -        hw_error("%s: Bad offset " REG_FMT "\n", __func__, offset);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                      __func__, offset);
>      }
>  }
>
> diff --git a/hw/dma/pxa2xx_dma.c b/hw/dma/pxa2xx_dma.c
> index 88ed4b6ff1..8a2eeb32bc 100644
> --- a/hw/dma/pxa2xx_dma.c
> +++ b/hw/dma/pxa2xx_dma.c
> @@ -9,6 +9,7 @@
>   */
>
>  #include "qemu/osdep.h"
> +#include "qemu/log.h"
>  #include "hw/hw.h"
>  #include "hw/irq.h"
>  #include "hw/qdev-properties.h"
> @@ -268,7 +269,8 @@ static uint64_t pxa2xx_dma_read(void *opaque, hwaddr offset,
>      unsigned int channel;
>
>      if (size != 4) {
> -        hw_error("%s: Bad access width\n", __func__);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad access width %u\n",
> +                      __func__, size);
>          return 5;
>      }
>
> @@ -315,8 +317,8 @@ static uint64_t pxa2xx_dma_read(void *opaque, hwaddr offset,
>              return s->chan[channel].cmd;
>          }
>      }
> -
> -    hw_error("%s: Bad offset 0x" TARGET_FMT_plx "\n", __func__, offset);
> +    qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                  __func__, offset);
>      return 7;
>  }
>
> @@ -327,7 +329,8 @@ static void pxa2xx_dma_write(void *opaque, hwaddr offset,
>      unsigned int channel;
>
>      if (size != 4) {
> -        hw_error("%s: Bad access width\n", __func__);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad access width %u\n",
> +                      __func__, size);
>          return;
>      }
>
> @@ -420,7 +423,8 @@ static void pxa2xx_dma_write(void *opaque, hwaddr offset,
>              break;
>          }
>      fail:
> -        hw_error("%s: Bad offset " TARGET_FMT_plx "\n", __func__, offset);
> +        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%" HWADDR_PRIX "\n",
> +                      __func__, offset);
>      }
>  }
>
> --
> 2.21.3
>
>