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Tue, 21 Feb 2023 22:17:55 +0000 Date: Tue, 21 Feb 2023 22:17:54 +0000 Message-ID: <87lekqzmr1.wl-maz@kernel.org> From: Marc Zyngier To: "Veith, Simon" Cc: "kvmarm@lists.linux.dev" , "kvm@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "dwmw2@infradead.org" , "yuzenghui@huawei.com" , "suzuki.poulose@arm.com" , "james.morse@arm.com" , "oliver.upton@linux.dev" , "ricarkol@google.com" Subject: Re: [PATCH 00/16] KVM: arm64: Rework timer offsetting for fun and profit In-Reply-To: <5404a3554c3a1efd1e8e098072a4cf03d1b01152.camel@amazon.de> References: <20230216142123.2638675-1-maz@kernel.org> <5404a3554c3a1efd1e8e098072a4cf03d1b01152.camel@amazon.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: sveith@amazon.de, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dwmw2@infradead.org, yuzenghui@huawei.com, suzuki.poulose@arm.com, james.morse@arm.com, oliver.upton@linux.dev, ricarkol@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230221_141800_136601_03167E91 X-CRM114-Status: GOOD ( 25.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgU2ltb24sCgpPbiBUdWUsIDIxIEZlYiAyMDIzIDE2OjI4OjM2ICswMDAwLAoiVmVpdGgsIFNp bW9uIiA8c3ZlaXRoQGFtYXpvbi5kZT4gd3JvdGU6Cj4gCj4gSGVsbG8gTWFyYywKPiAKPiBPbiBU aHUsIDIwMjMtMDItMTYgYXQgMTQ6MjEgKzAwMDAsIE1hcmMgWnluZ2llciB3cm90ZToKPiA+IFRo aXMgc2VyaWVzIGFpbXMgYXQgc2F0aXNmeWluZyBtdWx0aXBsZSBnb2FsczoKPiA+IAo+ID4gLSBh bGxvdyBhIFZNTSB0byBhdG9taWNhbGx5IHJlc3RvcmUgYSB0aW1lciBvZmZzZXQgZm9yIGEgd2hv bGUgVk0KPiA+IMKgIGluc3RlYWQgb2YgdXBkYXRpbmcgdGhlIG9mZnNldCBlYWNoIHRpbWUgYSB2 Y3B1IGdldCBpdHMgY291bnRlcgo+ID4gwqAgd3JpdHRlbgo+ID4gCj4gPiAtIGFsbG93IGEgVk1N IHRvIHNhdmUvcmVzdG9yZSB0aGUgcGh5c2ljYWwgdGltZXIgY29udGV4dCwgc29tZXRoaW5nCj4g PiDCoCB0aGF0IHdlIGNhbm5vdCBkbyBhdCB0aGUgbW9tZW50IGR1ZSB0byB0aGUgbGFjayBvZiBv ZmZzZXR0aW5nCj4gPiAKPiA+IC0gcHJvdmlkZSBhIGZyYW1ld29yayB0aGF0IGlzIHN1aXRhYmxl IGZvciBOViBzdXBwb3J0LCB3aGVyZSB3ZSBnZXQKPiA+IMKgIGJvdGggZ2xvYmFsIGFuZCBwZXIg dGltZXIsIHBlciB2Y3B1IG9mZnNldHRpbmcKPiAKPiBUaGFuayB5b3Ugc28gbXVjaCBmb3IgZm9s bG93aW5nIHVwIG9uIG15IChhZG1pdHRlZGx5IHZlcnkgYmFzaWMpIHBhdGNoCj4gd2l0aCB5b3Vy IG93biBwcm9wb3NhbCEKCk5vIHdvcnJpZXMuIFRoZXJlIGlzIG5vdGhpbmcgbGlrZSAibmVyZCBz bmlwaW5nIi4uLiA7LSkKCj4gPiBUaGlzIGhhcyBiZWVuIG1vZGVyYXRlbHkgdGVzdGVkIHdpdGgg blZIRSwgVkhFIGFuZCBOVi4gSSBkbyBub3QgaGF2ZQo+ID4gYWNjZXNzIHRvIENOVFBPRkYtYXdh cmUgSFcsIHNvIHRoZSBqdXJ5IGlzIHN0aWxsIG91dCBvbiB0aGF0IG9uZQo+IAo+IFNhbWUgaGVy ZSBhYm91dCBDTlRQT0ZGIC0tIEkgZ2F2ZSBpdCBhIHF1aWNrIHNwaW4gb24gR3Jhdml0b24yIGFu ZAo+IEdyYXZpdG9uMywgYW5kIG5laXRoZXIgY2hpcCBjbGFpbXMgdGhlIEFSTTY0X0hBU19FQ1Zf Q05UUE9GRiBjYXBhYmlsaXR5Cj4gZnJvbSB5b3VyIHBhdGNoLgoKTmFoLCBHMi9HMyBhcmUgb2xk IHN0dWZmICh2OC4yIGFuZCB2OC4zKyByZXNwZWN0aXZlbHkpLiBZb3UgbmVlZCBhdApsZWFzdCBh IHY4LjYgc3lzdGVtLCBzb21ldGhpbmcgdGhhdCBpcyBtYWRlIG9mIHRoZSBiZXN0IFVub2J0YWlu aXVtCm1vbmV5IGNhbiBidXkuIE0yIGhhcyBFQ1YsIGJ1dCB3aXRob3V0IENOVFBPRkYsIHdoaWNo IGlzIGp1c3Qgc2lsbHkuCgo+IEkgYW0gd29ya2luZyBvbiB0ZXN0aW5nIHlvdXIgc2VyaWVzIHdp dGggb3VyIHVzZXJzcGFjZSBhbmQgd2lsbCByZXBvcnQKPiBiYWNrLgoKVGhhbmtzIGEgbG90LCB0 aGF0J2QgYmUgc3VwZXIgaGVscGZ1bC4gUGxlYXNlIGRvbid0IGdldCB0b28gYXR0YWNoZWQKdG8g dGhlIHVzZXJzcGFjZSBpbnRlcmZhY2UgdGhvdWdoLCBhcyBpdCBpcyBsaWtlbHkgdG8gY2hhbmdl IChPbGl2ZXIKaGFzIGFuIGludGVyZXN0aW5nIHN1Z2dlc3Rpb24gdG8gc2ltcGxpZnkgaXQsIGJ1 dCBJIG5lZWQgdG8gY29udmluY2UKbXlzZWxmIHRoYXQgaXQgZG9lc24ndCBicmVhayBtaWdyYXRp b24gb2YgdGhlIHBoeXNpY2FsIHRpbWVyKS4KClRoYW5rcywKCglNLgoKLS0gCldpdGhvdXQgZGV2 aWF0aW9uIGZyb20gdGhlIG5vcm0sIHByb2dyZXNzIGlzIG5vdCBwb3NzaWJsZS4KCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwg bWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK