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Tsirkin" , John Snow , Gerd Hoffmann , Marcel Apfelbaum , Keith Busch , Fam Zheng Subject: [PATCH 4/8] dma: Let dma_buf_rw() take MemTxAttrs argument Date: Thu, 16 Dec 2021 13:35:54 +0100 Message-Id: <20211216123558.799425-5-philmd@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211216123558.799425-1-philmd@redhat.com> References: <20211216123558.799425-1-philmd@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1639658191568100003 Let devices specify transaction attributes when calling dma_buf_rw(). Keep the default MEMTXATTRS_UNSPECIFIED in the 2 callers. Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- softmmu/dma-helpers.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c index 7f37548394e..fa81d2b386c 100644 --- a/softmmu/dma-helpers.c +++ b/softmmu/dma-helpers.c @@ -295,7 +295,7 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk, =20 =20 static uint64_t dma_buf_rw(void *buf, int32_t len, QEMUSGList *sg, - DMADirection dir) + DMADirection dir, MemTxAttrs attrs) { uint8_t *ptr =3D buf; uint64_t resid; @@ -307,8 +307,7 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QEMU= SGList *sg, while (len > 0) { ScatterGatherEntry entry =3D sg->sg[sg_cur_index++]; int32_t xfer =3D MIN(len, entry.len); - dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, - MEMTXATTRS_UNSPECIFIED); + dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, attrs); ptr +=3D xfer; len -=3D xfer; resid -=3D xfer; @@ -319,12 +318,14 @@ static uint64_t dma_buf_rw(void *buf, int32_t len, QE= MUSGList *sg, =20 uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_FROM_DEVICE, + MEMTXATTRS_UNSPECIFIED); } =20 uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg) { - return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE); + return dma_buf_rw(ptr, len, sg, DMA_DIRECTION_TO_DEVICE, + MEMTXATTRS_UNSPECIFIED); } =20 void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie, --=20 2.33.1