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Tsirkin" , Peter Xu , Jason Wang , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Cc: Ani Sinha , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , qemu-devel@nongnu.org Subject: [PATCH] hw/i386/intel_iommu: changes towards enabling -Wshadow=local Date: Tue, 3 Oct 2023 16:06:01 +0530 Message-ID: <20231003103601.6245-1-anisinha@redhat.com> X-Mailer: git-send-email 2.42.0 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=170.10.129.124; envelope-from=anisinha@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1696329429261100001 Code changes that addresses all compiler complaints coming from enabling -Wshadow flags. Enabling -Wshadow catches cases of local variables shadowing other local variables or parameters. These makes the code confusing and/or = adds bugs that are difficult to catch. See also Subject: Help wanted for enabling -Wshadow=3Dlocal Message-Id: <87r0mqlf9x.fsf@pond.sub.org> https://lore.kernel.org/qemu-devel/87r0mqlf9x.fsf@pond.sub.org Signed-off-by: Ani Sinha Reviewed-by: Daniel P. Berrang=C3=A9 Reviewed-by: Peter Xu --- hw/i386/intel_iommu.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) See also=20 Peter's changes from https://lore.kernel.org/r/20230922160410.138786-1-peterx@redhat.com. This patch is same as above. diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index c0ce896668..2c832ab68b 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3744,7 +3744,7 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, = PCIBus *bus, /* Unmap the whole range in the notifier's scope. */ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n) { - hwaddr size, remain; + hwaddr total, remain; hwaddr start =3D n->start; hwaddr end =3D n->end; IntelIOMMUState *s =3D as->iommu_state; @@ -3765,7 +3765,7 @@ static void vtd_address_space_unmap(VTDAddressSpace *= as, IOMMUNotifier *n) } =20 assert(start <=3D end); - size =3D remain =3D end - start + 1; + total =3D remain =3D end - start + 1; =20 while (remain >=3D VTD_PAGE_SIZE) { IOMMUTLBEvent event; @@ -3793,10 +3793,10 @@ static void vtd_address_space_unmap(VTDAddressSpace= *as, IOMMUNotifier *n) trace_vtd_as_unmap_whole(pci_bus_num(as->bus), VTD_PCI_SLOT(as->devfn), VTD_PCI_FUNC(as->devfn), - n->start, size); + n->start, total); =20 map.iova =3D n->start; - map.size =3D size - 1; /* Inclusive */ + map.size =3D total - 1; /* Inclusive */ iova_tree_remove(as->iova_tree, map); } =20 --=20 2.42.0