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Sat, 23 May 2020 16:20:43 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Subject: [PATCH RFC v3 03/11] KVM: Fixup kvm_log_clear_one_slot() ioctl return check Date: Sat, 23 May 2020 19:20:27 -0400 Message-Id: <20200523232035.1029349-4-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200523232035.1029349-1-peterx@redhat.com> References: <20200523232035.1029349-1-peterx@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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=207.211.31.120; envelope-from=peterx@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/23 18:49:37 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_H3=0.001, RCVD_IN_MSPIKE_WL=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: Paolo Bonzini , "Dr . David Alan Gilbert" , peterx@redhat.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" kvm_vm_ioctl() handles the errno trick already for ioctl() on returning -1 for errors. Fix this. Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Peter Xu Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- accel/kvm/kvm-all.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index d06cc04079..6e015aa2d4 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -699,14 +699,13 @@ static int kvm_log_clear_one_slot(KVMSlot *mem, int a= s_id, uint64_t start, d.num_pages =3D bmap_npages; d.slot =3D mem->slot | (as_id << 16); =20 - if (kvm_vm_ioctl(s, KVM_CLEAR_DIRTY_LOG, &d) =3D=3D -1) { - ret =3D -errno; + ret =3D kvm_vm_ioctl(s, KVM_CLEAR_DIRTY_LOG, &d); + if (ret) { error_report("%s: KVM_CLEAR_DIRTY_LOG failed, slot=3D%d, " "start=3D0x%"PRIx64", size=3D0x%"PRIx32", errno=3D%d", __func__, d.slot, (uint64_t)d.first_page, (uint32_t)d.num_pages, ret); } else { - ret =3D 0; trace_kvm_clear_dirty_log(d.slot, d.first_page, d.num_pages); } =20 --=20 2.26.2