Re: [PATCH] hw: Use QEMU_IS_ALIGNED() on parallel flash block size

[Alistair Francis]

On Mon, May 11, 2020 at 1:54 PM Philippe Mathieu-Daudé
<address@hidden> wrote:
>
> Use the QEMU_IS_ALIGNED() macro to verify the flash block size
> is properly aligned. It is quicker to process when reviewing.
>
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>

Reviewed-by: Alistair Francis <address@hidden>

Alistair

> ---
>  hw/arm/sbsa-ref.c       | 2 +-
>  hw/arm/virt.c           | 2 +-
>  hw/block/pflash_cfi01.c | 2 +-
>  hw/block/pflash_cfi02.c | 2 +-
>  hw/i386/pc_sysfw.c      | 2 +-
>  hw/riscv/virt.c         | 2 +-
>  6 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
> index 8409ba853d..b379e4a76a 100644
> --- a/hw/arm/sbsa-ref.c
> +++ b/hw/arm/sbsa-ref.c
> @@ -241,7 +241,7 @@ static void sbsa_flash_map1(PFlashCFI01 *flash,
>  {
>      DeviceState *dev = DEVICE(flash);
>
> -    assert(size % SBSA_FLASH_SECTOR_SIZE == 0);
> +    assert(QEMU_IS_ALIGNED(size, SBSA_FLASH_SECTOR_SIZE));
>      assert(size / SBSA_FLASH_SECTOR_SIZE <= UINT32_MAX);
>      qdev_prop_set_uint32(dev, "num-blocks", size / SBSA_FLASH_SECTOR_SIZE);
>      qdev_init_nofail(dev);
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 634db0cfe9..0a99fddb3d 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -978,7 +978,7 @@ static void virt_flash_map1(PFlashCFI01 *flash,
>  {
>      DeviceState *dev = DEVICE(flash);
>
> -    assert(size % VIRT_FLASH_SECTOR_SIZE == 0);
> +    assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
>      assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
>      qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
>      qdev_init_nofail(dev);
> diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
> index f586bac269..11922c0f96 100644
> --- a/hw/block/pflash_cfi01.c
> +++ b/hw/block/pflash_cfi01.c
> @@ -964,7 +964,7 @@ PFlashCFI01 *pflash_cfi01_register(hwaddr base,
>      if (blk) {
>          qdev_prop_set_drive(dev, "drive", blk, &error_abort);
>      }
> -    assert(size % sector_len == 0);
> +    assert(QEMU_IS_ALIGNED(size, sector_len));
>      qdev_prop_set_uint32(dev, "num-blocks", size / sector_len);
>      qdev_prop_set_uint64(dev, "sector-length", sector_len);
>      qdev_prop_set_uint8(dev, "width", bank_width);
> diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c
> index c6b6f2d082..895f7daee3 100644
> --- a/hw/block/pflash_cfi02.c
> +++ b/hw/block/pflash_cfi02.c
> @@ -1003,7 +1003,7 @@ PFlashCFI02 *pflash_cfi02_register(hwaddr base,
>      if (blk) {
>          qdev_prop_set_drive(dev, "drive", blk, &error_abort);
>      }
> -    assert(size % sector_len == 0);
> +    assert(QEMU_IS_ALIGNED(size, sector_len));
>      qdev_prop_set_uint32(dev, "num-blocks", size / sector_len);
>      qdev_prop_set_uint32(dev, "sector-length", sector_len);
>      qdev_prop_set_uint8(dev, "width", width);
> diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
> index f5f3f466b0..fad41f0e73 100644
> --- a/hw/i386/pc_sysfw.c
> +++ b/hw/i386/pc_sysfw.c
> @@ -168,7 +168,7 @@ static void pc_system_flash_map(PCMachineState *pcms,
>                           blk_name(blk), strerror(-size));
>              exit(1);
>          }
> -        if (size == 0 || size % FLASH_SECTOR_SIZE != 0) {
> +        if (size == 0 || !QEMU_IS_ALIGNED(size, FLASH_SECTOR_SIZE)) {
>              error_report("system firmware block device %s has invalid size "
>                           "%" PRId64,
>                           blk_name(blk), size);
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index daae3ebdbb..71481d59c2 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -112,7 +112,7 @@ static void virt_flash_map1(PFlashCFI01 *flash,
>  {
>      DeviceState *dev = DEVICE(flash);
>
> -    assert(size % VIRT_FLASH_SECTOR_SIZE == 0);
> +    assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
>      assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
>      qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
>      qdev_init_nofail(dev);
> --
> 2.21.3
>
>