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Mon, 18 May 2020 05:49:47 -0700 (PDT) Subject: Re: [PATCH] hw: Use QEMU_IS_ALIGNED() on parallel flash block size To: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , qemu-devel@nongnu.org References: <20200511205246.24621-1-philmd@redhat.com> From: Paolo Bonzini Message-ID: <60f129c2-499d-01e1-e0ee-9fd6ac759736@redhat.com> Date: Mon, 18 May 2020 14:49:45 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20200511205246.24621-1-philmd@redhat.com> Content-Language: en-US X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=207.211.31.81; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/17 22:52:27 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Peter Maydell , Radoslaw Biernacki , qemu-riscv@nongnu.org, qemu-block@nongnu.org, Sagar Karandikar , "Michael S. Tsirkin" , Bastian Koppelmann , Eduardo Habkost , Max Reitz , qemu-arm@nongnu.org, Alistair Francis , Palmer Dabbelt , Leif Lindholm , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 11/05/20 22:52, Philippe Mathieu-Daudé 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 > --- > 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); > Acked-by: Paolo Bonzini