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[216.180.64.156]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71944ab507asm7027798b3a.50.2024.09.18.11.51.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 18 Sep 2024 11:51:39 -0700 (PDT) Message-ID: Date: Wed, 18 Sep 2024 11:51:38 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 14/18] util/timer: avoid deadlock when shutting down Content-Language: en-US To: =?UTF-8?Q?Alex_Benn=C3=A9e?= , qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, Thomas Huth , Richard Henderson , qemu-ppc@nongnu.org, Ilya Leoshkevich , Paolo Bonzini , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , Marcel Apfelbaum , Alexandre Iooss , Eduardo Habkost , Daniel Henrique Barboza , Yanan Wang , Nicholas Piggin , David Hildenbrand , devel@lists.libvirt.org, Mahmoud Mandour , Zhao Liu , Elisha Hollander References: <20240916085400.1046925-1-alex.bennee@linaro.org> <20240916085400.1046925-15-alex.bennee@linaro.org> From: Pierrick Bouvier In-Reply-To: <20240916085400.1046925-15-alex.bennee@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 Received-SPF: pass client-ip=2607:f8b0:4864:20::434; envelope-from=pierrick.bouvier@linaro.org; helo=mail-pf1-x434.google.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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org T24gOS8xNi8yNCAwMTo1MywgQWxleCBCZW5uw6llIHdyb3RlOg0KPiBXaGVuIHdlIHNodXQg ZG93biBhIGd1ZXN0IHdlIGRpc2FibGUgdGhlIHRpbWVycy4gSG93ZXZlciB0aGlzIGNhbg0K PiBjYXVzZSBkZWFkbG9jayBpZiB0aGUgZ3Vlc3QgaGFzIHF1ZXVlZCBzb21lIGFzeW5jIHdv cmsgdGhhdCBpcyB0cnlpbmcNCj4gdG8gYWR2YW5jZSBzeXN0ZW0gdGltZSBhbmQgc3BpbnMg Zm9yZXZlciB0cnlpbmcgdG8gd2luZCB0aW1lIGZvcndhcmQuDQo+IFBheSBhdHRlbnRpb24g dG8gdGhlIHJldHVybiBjb2RlIGFuZCBiYWlsIGVhcmx5IGlmIHdlIGNhbid0IHdpbmQgdGlt ZQ0KPiBmb3J3YXJkLg0KPiANCj4gU2lnbmVkLW9mZi1ieTogQWxleCBCZW5uw6llIDxhbGV4 LmJlbm5lZUBsaW5hcm8ub3JnPg0KPiBSZXBvcnRlZC1ieTogRWxpc2hhIEhvbGxhbmRlciA8 anVzdDRub3c2NjY2NjZAZ21haWwuY29tPg0KPiAtLS0NCj4gICB1dGlsL3FlbXUtdGltZXIu YyB8IDE0ICsrKysrKysrKysrKy0tDQo+ICAgMSBmaWxlIGNoYW5nZWQsIDEyIGluc2VydGlv bnMoKyksIDIgZGVsZXRpb25zKC0pDQo+IA0KPiBkaWZmIC0tZ2l0IGEvdXRpbC9xZW11LXRp bWVyLmMgYi91dGlsL3FlbXUtdGltZXIuYw0KPiBpbmRleCAyMTMxMTRiZTY4Li42YjE1MzNi YzJhIDEwMDY0NA0KPiAtLS0gYS91dGlsL3FlbXUtdGltZXIuYw0KPiArKysgYi91dGlsL3Fl bXUtdGltZXIuYw0KPiBAQCAtNjg1LDEwICs2ODUsMTcgQEAgaW50NjRfdCBxZW11X2Nsb2Nr X2FkdmFuY2VfdmlydHVhbF90aW1lKGludDY0X3QgZGVzdCkNCj4gICB7DQo+ICAgICAgIGlu dDY0X3QgY2xvY2sgPSBxZW11X2Nsb2NrX2dldF9ucyhRRU1VX0NMT0NLX1ZJUlRVQUwpOw0K PiAgICAgICBBaW9Db250ZXh0ICphaW9fY29udGV4dDsNCj4gKyAgICBpbnQ2NF90IGRlYWRs aW5lOw0KPiArDQo+ICAgICAgIGFpb19jb250ZXh0ID0gcWVtdV9nZXRfYWlvX2NvbnRleHQo KTsNCj4gLSAgICB3aGlsZSAoY2xvY2sgPCBkZXN0KSB7DQo+IC0gICAgICAgIGludDY0X3Qg ZGVhZGxpbmUgPSBxZW11X2Nsb2NrX2RlYWRsaW5lX25zX2FsbChRRU1VX0NMT0NLX1ZJUlRV QUwsDQo+ICsNCj4gKyAgICBkZWFkbGluZSA9IHFlbXVfY2xvY2tfZGVhZGxpbmVfbnNfYWxs KFFFTVVfQ0xPQ0tfVklSVFVBTCwNCj4gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICBRRU1VX1RJTUVSX0FUVFJfQUxMKTsNCj4gKyAg ICAvKg0KPiArICAgICAqIEEgZGVhZGxpbmUgb2YgPCAwIGluZGljYXRlcyB0aGlzIHRpbWVy IGlzIG5vdCBlbmFibGVkLCBzbyB3ZQ0KPiArICAgICAqIHdvbid0IGdldCBmYXIgdHJ5aW5n IHRvIHJ1biBpdCBmb3J3YXJkLg0KPiArICAgICAqLw0KPiArICAgIHdoaWxlIChkZWFkbGlu ZSA+PSAwICYmIGNsb2NrIDwgZGVzdCkgew0KPiAgICAgICAgICAgaW50NjRfdCB3YXJwID0g cWVtdV9zb29uZXN0X3RpbWVvdXQoZGVzdCAtIGNsb2NrLCBkZWFkbGluZSk7DQo+ICAgDQo+ ICAgICAgICAgICBxZW11X3ZpcnR1YWxfY2xvY2tfc2V0X25zKHFlbXVfY2xvY2tfZ2V0X25z KFFFTVVfQ0xPQ0tfVklSVFVBTCkgKyB3YXJwKTsNCj4gQEAgLTY5Niw2ICs3MDMsOSBAQCBp bnQ2NF90IHFlbXVfY2xvY2tfYWR2YW5jZV92aXJ0dWFsX3RpbWUoaW50NjRfdCBkZXN0KQ0K PiAgICAgICAgICAgcWVtdV9jbG9ja19ydW5fdGltZXJzKFFFTVVfQ0xPQ0tfVklSVFVBTCk7 DQo+ICAgICAgICAgICB0aW1lcmxpc3RfcnVuX3RpbWVycyhhaW9fY29udGV4dC0+dGxnLnRs W1FFTVVfQ0xPQ0tfVklSVFVBTF0pOw0KPiAgICAgICAgICAgY2xvY2sgPSBxZW11X2Nsb2Nr X2dldF9ucyhRRU1VX0NMT0NLX1ZJUlRVQUwpOw0KPiArDQo+ICsgICAgICAgIGRlYWRsaW5l ID0gcWVtdV9jbG9ja19kZWFkbGluZV9uc19hbGwoUUVNVV9DTE9DS19WSVJUVUFMLA0KPiAr ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIFFFTVVfVElN RVJfQVRUUl9BTEwpOw0KPiAgICAgICB9DQo+ICAgICAgIHFlbXVfY2xvY2tfbm90aWZ5KFFF TVVfQ0xPQ0tfVklSVFVBTCk7DQo+ICAgDQoNClJldmlld2VkLWJ5OiBQaWVycmljayBCb3V2 aWVyIDxwaWVycmljay5ib3V2aWVyQGxpbmFyby5vcmc+DQo=