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Peter Anvin" , xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, Marcelo Tosatti , Anthony Liguori , David Reaver , Brendan Gregg References: <20221216162118.GB2633@templeofstupid.com> From: Juergen Gross In-Reply-To: <20221216162118.GB2633@templeofstupid.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------38t5y0B0Em8nbY3EMVit4Vgh" X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------38t5y0B0Em8nbY3EMVit4Vgh Content-Type: multipart/mixed; boundary="------------0yf02OYAWQlmBNc7Jtlc9pcv"; protected-headers="v1" From: Juergen Gross To: Krister Johansen , Boris Ostrovsky , Jan Beulich Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, Marcelo Tosatti , Anthony Liguori , David Reaver , Brendan Gregg Message-ID: Subject: Re: [PATCH linux-next v3] x86/xen/time: prefer tsc as clocksource when it is invariant References: <20221216162118.GB2633@templeofstupid.com> In-Reply-To: <20221216162118.GB2633@templeofstupid.com> --------------0yf02OYAWQlmBNc7Jtlc9pcv Content-Type: multipart/mixed; boundary="------------jUB04oQjKhCxGGAPi0Pav4Ia" --------------jUB04oQjKhCxGGAPi0Pav4Ia Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64 T24gMTYuMTIuMjIgMTc6MjEsIEtyaXN0ZXIgSm9oYW5zZW4gd3JvdGU6DQo+IEt2bSBlbGVj dHMgdG8gdXNlIHRzYyBpbnN0ZWFkIG9mIGt2bS1jbG9jayB3aGVuIGl0IGNhbiBkZXRlY3Qg dGhhdCB0aGUNCj4gVFNDIGlzIGludmFyaWFudC4NCj4gDQo+IChBcyBvZiBjb21taXQgNzUz OWIxNzRhZWY0ICgieDg2OiBrdm1ndWVzdDogdXNlIFRTQyBjbG9ja3NvdXJjZSBpZg0KPiBp bnZhcmlhbnQgVFNDIGlzIGV4cG9zZWQiKSkuDQo+IA0KPiBOb3RhYmxlIGNsb3VkIHZlbmRv cnNbMV0gYW5kIHBlcmZvcm1hbmNlIGVuZ2luZWVyc1syXSByZWNvbW1lbmQgdGhhdCBYZW4N Cj4gdXNlcnMgcHJlZmVyZW50aWFsbHkgc2VsZWN0IHRzYyBvdmVyIHhlbi1jbG9ja3NvdXJj ZSBkdWUgdGhlIHBlcmZvcm1hbmNlDQo+IHBlbmFsdHkgaW5jdXJyZWQgYnkgdGhlIGxhdHRl ci4gIFRoZXNlIGFydGljbGVzIGFyZSBwZXJzdWFzaXZlIGFuZA0KPiB0YWlsb3JlZCB0byBz cGVjaWZpYyB1c2UgY2FzZXMuICBJbiBvcmRlciB0byB1bmRlcnN0YW5kIHRoZSB0cmFkZW9m ZnMNCj4gYXJvdW5kIHRoaXMgY2hvaWNlIG1vcmUgZnVsbHksIHRoaXMgYXV0aG9yIGhhZCB0 byByZWZlcmVuY2UgdGhlDQo+IGRvY3VtZW50ZWRbM10gY29tcGxleGl0aWVzIGFyb3VuZCB0 aGUgWGVuIGNvbmZpZ3VyYXRpb24sIGFzIHdlbGwgYXMgdGhlDQo+IGtlcm5lbCdzIGNsb2Nr c291cmNlIHNlbGVjdGlvbiBhbGdvcml0aG0uICBNYW55IHVzZXJzIG1heSBub3QgYXR0ZW1w dA0KPiB0aGlzIHRvIGNvcnJlY3RseSBjb25maWd1cmUgdGhlIHJpZ2h0IGNsb2NrIHNvdXJj ZSBpbiB0aGVpciBndWVzdC4NCj4gDQo+IFRoZSBhcHByb2FjaCB0YWtlbiBpbiB0aGUga3Zt LWNsb2NrIG1vZHVsZSBzcGFyZXMgdXNlcnMgdGhpcyBjb25mdXNpb24sDQo+IHdoZXJlIHBv c3NpYmxlLg0KPiANCj4gQm90aCB0aGUgSW50ZWwgU0RNWzRdIGFuZCB0aGUgWGVuIHRzYyBk b2N1bWVudGF0aW9uIGV4cGxhaW4gdGhhdCBtYXJraW5nDQo+IGEgdHNjIGFzIGludmFyaWFu dCBtZWFucyB0aGF0IGl0IHNob3VsZCBiZSBjb25zaWRlcmVkIHN0YWJsZSBieSB0aGUgT1MN Cj4gYW5kIGlzIGVsaWJpbGUgdG8gYmUgdXNlZCBhcyBhIHdhbGwgY2xvY2sgc291cmNlLg0K PiANCj4gSW4gb3JkZXIgdG8gb2J0YWluIGJldHRlciBvdXQtb2YtdGhlLWJveCBwZXJmb3Jt YW5jZSwgYW5kIHJlZHVjZSB0aGUNCj4gbmVlZCBmb3IgdXNlciB0dW5pbmcsIGZvbGxvdyBr dm0ncyBhcHByb2FjaCBhbmQgZGVjcmVhc2UgdGhlIHhlbiBjbG9jaw0KPiByYXRpbmcgc28g dGhhdCB0c2MgaXMgcHJlZmVyYWJsZSwgaWYgaXQgaXMgaW52YXJpYW50LCBzdGFibGUsIGFu ZCB0aGUNCj4gdHNjIHdpbGwgbmV2ZXIgYmUgZW11bGF0ZWQuDQo+IA0KPiBbMV0gaHR0cHM6 Ly9hd3MuYW1hem9uLmNvbS9wcmVtaXVtc3VwcG9ydC9rbm93bGVkZ2UtY2VudGVyL21hbmFn ZS1lYzItbGludXgtY2xvY2stc291cmNlLw0KPiBbMl0gaHR0cHM6Ly93d3cuYnJlbmRhbmdy ZWdnLmNvbS9ibG9nLzIwMjEtMDktMjYvdGhlLXNwZWVkLW9mLXRpbWUuaHRtbA0KPiBbM10g aHR0cHM6Ly94ZW5iaXRzLnhlbi5vcmcvZG9jcy91bnN0YWJsZS9tYW4veGVuLXRzY21vZGUu Ny5odG1sDQo+IFs0XSBJbnRlbCA2NCBhbmQgSUEtMzIgQXJjaGl0ZWN0dXJlcyBTb2Z3YXJl IERldmVsb3BlcidzIE1hbnVhbCBWb2x1bWUNCj4gICAgICAzYjogU3lzdGVtIFByb2dyYW1t aW5nIEd1aWRlLCBQYXJ0IDIsIFNlY3Rpb24gMTcuMTcuMSwgSW52YXJpYW50IFRTQw0KPiAN Cj4gU2lnbmVkLW9mZi1ieTogS3Jpc3RlciBKb2hhbnNlbiA8a2pseEB0ZW1wbGVvZnN0dXBp ZC5jb20+DQo+IENvZGUtcmV2aWV3ZWQtYnk6IERhdmlkIFJlYXZlciA8bWVAZGF2aWRyZWF2 ZXIuY29tPg0KDQpSZXZpZXdlZC1ieTogSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuY29t Pg0KDQoNCkp1ZXJnZW4NCg0K --------------jUB04oQjKhCxGGAPi0Pav4Ia Content-Type: application/pgp-keys; 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