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Tsirkin" , Marcel Apfelbaum , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Eduardo Habkost , Jon Maloy , Siqi Chen Subject: [PATCH v3 3/7] ahci: switch to guarded DMA acccesses Date: Fri, 28 Oct 2022 15:16:44 -0400 Message-Id: <20221028191648.964076-4-alxndr@bu.edu> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20221028191648.964076-1-alxndr@bu.edu> References: <20221028191648.964076-1-alxndr@bu.edu> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CES-GSUITE_AUTH: bf3aNvsZpxl8 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=68.232.154.118; envelope-from=alxndr@bu.edu; helo=esa3.hc2706-39.iphmx.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.998, HK_RANDOM_FROM=0.998, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Qemu-devel" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @bu.edu) X-ZM-MESSAGEID: 1666984716224100003 Content-Type: text/plain; charset="utf-8" Fixes: https://gitlab.com/qemu-project/qemu/-/issues/62 Signed-off-by: Alexander Bulekov --- hw/ide/ahci.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 7ce001cacd..ffa817eebe 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -240,19 +240,21 @@ static void ahci_trigger_irq(AHCIState *s, AHCIDevice= *d, ahci_check_irq(s); } =20 -static void map_page(AddressSpace *as, uint8_t **ptr, uint64_t addr, +static void map_page(AHCIDevice *ad, uint8_t **ptr, uint64_t addr, uint32_t wanted) { hwaddr len =3D wanted; =20 if (*ptr) { - dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len); + dma_memory_unmap_guarded(DEVICE(ad), ad->hba->as, + *ptr, len, DMA_DIRECTION_FROM_DEVICE, len); } =20 - *ptr =3D dma_memory_map(as, addr, &len, DMA_DIRECTION_FROM_DEVICE, - MEMTXATTRS_UNSPECIFIED); + *ptr =3D dma_memory_map_guarded(DEVICE(ad), ad->hba->as, addr, &len, + DMA_DIRECTION_FROM_DEVICE, MEMTXATTRS_UNSPECIFIED); if (len < wanted && *ptr) { - dma_memory_unmap(as, *ptr, len, DMA_DIRECTION_FROM_DEVICE, len); + dma_memory_unmap_guarded(DEVICE(ad), ad->hba->as, *ptr, len, + DMA_DIRECTION_FROM_DEVICE, len); *ptr =3D NULL; } } @@ -720,7 +722,7 @@ static char *ahci_pretty_buffer_fis(const uint8_t *fis,= int cmd_len) static bool ahci_map_fis_address(AHCIDevice *ad) { AHCIPortRegs *pr =3D &ad->port_regs; - map_page(ad->hba->as, &ad->res_fis, + map_page(ad, &ad->res_fis, ((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256); if (ad->res_fis !=3D NULL) { pr->cmd |=3D PORT_CMD_FIS_ON; @@ -747,7 +749,7 @@ static bool ahci_map_clb_address(AHCIDevice *ad) { AHCIPortRegs *pr =3D &ad->port_regs; ad->cur_cmd =3D NULL; - map_page(ad->hba->as, &ad->lst, + map_page(ad, &ad->lst, ((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024); if (ad->lst !=3D NULL) { pr->cmd |=3D PORT_CMD_LIST_ON; --=20 2.27.0