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Iglesias" To: qemu-devel@nongnu.org Subject: [PATCH v1 1/2] dma/xlnx-zdma: Fix descriptor loading (MEM) wrt endianness Date: Sat, 4 Apr 2020 14:27:17 +0200 Message-Id: <20200404122718.25111-2-edgar.iglesias@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200404122718.25111-1-edgar.iglesias@gmail.com> References: <20200404122718.25111-1-edgar.iglesias@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::244 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: figlesia@xilinx.com, peter.maydell@linaro.org, sstabellini@kernel.org, edgar.iglesias@xilinx.com, sai.pavan.boddu@xilinx.com, frasse.iglesias@gmail.com, alistair@alistair23.me, richard.henderson@linaro.org, frederic.konrad@adacore.com, qemu-arm@nongnu.org, philmd@redhat.com, luc.michel@greensocs.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: "Edgar E. Iglesias" Fix descriptor loading from memory wrt host endianness. Reported-by: Peter Maydell Signed-off-by: Edgar E. Iglesias Reviewed-by: Francisco Iglesias Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- hw/dma/xlnx-zdma.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/hw/dma/xlnx-zdma.c b/hw/dma/xlnx-zdma.c index 1c45367f3c..5f4775f663 100644 --- a/hw/dma/xlnx-zdma.c +++ b/hw/dma/xlnx-zdma.c @@ -299,19 +299,22 @@ static void zdma_put_regaddr64(XlnxZDMA *s, unsigned = int basereg, uint64_t addr) s->regs[basereg + 1] =3D addr >> 32; } =20 -static bool zdma_load_descriptor(XlnxZDMA *s, uint64_t addr, void *buf) +static bool zdma_load_descriptor(XlnxZDMA *s, uint64_t addr, + XlnxZDMADescr *descr) { /* ZDMA descriptors must be aligned to their own size. */ if (addr % sizeof(XlnxZDMADescr)) { qemu_log_mask(LOG_GUEST_ERROR, "zdma: unaligned descriptor at %" PRIx64, addr); - memset(buf, 0x0, sizeof(XlnxZDMADescr)); + memset(descr, 0x0, sizeof(XlnxZDMADescr)); s->error =3D true; return false; } =20 - address_space_read(s->dma_as, addr, s->attr, buf, sizeof(XlnxZDMADescr= )); + descr->addr =3D address_space_ldq_le(s->dma_as, addr, s->attr, NULL); + descr->size =3D address_space_ldl_le(s->dma_as, addr + 8, s->attr, NUL= L); + descr->attr =3D address_space_ldl_le(s->dma_as, addr + 12, s->attr, NU= LL); return true; } =20 @@ -344,7 +347,7 @@ static void zdma_update_descr_addr(XlnxZDMA *s, bool ty= pe, } else { addr =3D zdma_get_regaddr64(s, basereg); addr +=3D sizeof(s->dsc_dst); - address_space_read(s->dma_as, addr, s->attr, (void *) &next, 8); + next =3D address_space_ldq_le(s->dma_as, addr, s->attr, NULL); } =20 zdma_put_regaddr64(s, basereg, next); --=20 2.20.1