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M . Jones" , Ilya Dryomov , Peter Lieven , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Fam Zheng , Ronnie Sahlberg Subject: [PATCH v2 18/19] null-aio: Run CB in original AioContext Date: Mon, 10 Nov 2025 16:48:53 +0100 Message-ID: <20251110154854.151484-19-hreitz@redhat.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251110154854.151484-1-hreitz@redhat.com> References: <20251110154854.151484-1-hreitz@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=170.10.133.124; envelope-from=hreitz@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_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: , 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: 1762789988495158500 AIO callbacks must be called in the originally calling AioContext, regardless of the BDS=E2=80=99s =E2=80=9Cmain=E2=80=9D AioContext. Signed-off-by: Hanna Czenczek --- block/null.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/block/null.c b/block/null.c index 4e448d593d..253d20ccbb 100644 --- a/block/null.c +++ b/block/null.c @@ -173,18 +173,17 @@ static inline BlockAIOCB *null_aio_common(BlockDriver= State *bs, { NullAIOCB *acb; BDRVNullState *s =3D bs->opaque; + AioContext *ctx =3D qemu_get_current_aio_context(); =20 acb =3D qemu_aio_get(&null_aiocb_info, bs, cb, opaque); /* Only emulate latency after vcpu is running. */ if (s->latency_ns) { - aio_timer_init(bdrv_get_aio_context(bs), &acb->timer, - QEMU_CLOCK_REALTIME, SCALE_NS, + aio_timer_init(ctx, &acb->timer, QEMU_CLOCK_REALTIME, SCALE_NS, null_timer_cb, acb); timer_mod_ns(&acb->timer, qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + s->latency_n= s); } else { - replay_bh_schedule_oneshot_event(bdrv_get_aio_context(bs), - null_bh_cb, acb); + replay_bh_schedule_oneshot_event(ctx, null_bh_cb, acb); } return &acb->common; } --=20 2.51.1