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Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7fvf-0005C4-O6; Mon, 17 Aug 2020 14:16:03 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188] helo=huawei.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7fvc-0005A8-1S for linux-arm-kernel@lists.infradead.org; Mon, 17 Aug 2020 14:16:01 +0000 Received: from dggeme755-chm.china.huawei.com (unknown [172.30.72.54]) by Forcepoint Email with ESMTP id 5AC8B462E995EFE33ED2; Mon, 17 Aug 2020 22:15:51 +0800 (CST) Received: from [10.174.186.8] (10.174.186.8) by dggeme755-chm.china.huawei.com (10.3.19.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1913.5; Mon, 17 Aug 2020 22:15:50 +0800 Subject: Re: [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted To: Marc Zyngier References: <20200721041742.197354-1-sergey.senozhatsky@gmail.com> <20200817020310.GA1210848@jagdpanzerIV.localdomain> From: yezengruan Message-ID: <3ff3b016-3f63-7d03-ed4b-c98d74db4af8@huawei.com> Date: Mon, 17 Aug 2020 22:15:39 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.3.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.174.186.8] X-ClientProxiedBy: dggeme712-chm.china.huawei.com (10.1.199.108) To dggeme755-chm.china.huawei.com (10.3.19.101) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200817_101600_350213_59A0DED8 X-CRM114-Status: GOOD ( 14.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: joelaf@google.com, yezengruan@huawei.com, "linux-kernel@vger.kernel.org" , Sergey Senozhatsky , "Wanghaibin \(D\)" , suleiman@google.com, "will@kernel.org" , "kvmarm@lists.cs.columbia.edu" , "linux-arm-kernel@lists.infradead.org" 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 T24gMjAyMC84LzE3IDIwOjI1LCBNYXJjIFp5bmdpZXIgd3JvdGU6Cj4gT24gMjAyMC0wOC0xNyAx MzowMywgeWV6ZW5ncnVhbiB3cm90ZToKPj4gT24gMjAyMC84LzE3IDEwOjAzLCBTZXJnZXkgU2Vu b3poYXRza3kgd3JvdGU6Cj4+PiBPbiAoMjAvMDcvMjEgMTM6MTcpLCBTZXJnZXkgU2Vub3poYXRz a3kgd3JvdGU6Cj4+Pj4gSGVsbG8sCj4+Pj4KPj4+PiDCoMKgwqDCoFJGQwo+Pj4+Cj4+Pj4gwqDC oMKgwqBXZSBub3RpY2VkIHRoYXQgaW4gYSBudW1iZXIgb2YgY2FzZXMgd2hlbiB3ZSB3YWtlX3Vw X3Byb2Nlc3MoKQo+Pj4+IG9uIGFybTY0IGd1ZXN0IHdlIGVuZCB1cCBlbnF1ZXVpbmcgdGhhdCB0 YXNrIG9uIGEgcHJlZW1wdGVkIFZDUFUuIFRoZSBjdWxwcml0Cj4+Pj4gYXBwZWFycyB0byBiZSB0 aGUgZmFjdCB0aGF0IGFybTY0IGd1ZXN0cyBhcmUgbm90IGF3YXJlIG9mIFZDUFUgcHJlZW1wdGlv bgo+Pj4+IGFzIHN1Y2gsIHNvIHdoZW4gc2NoZWQgcGlja3MgdXAgYW4gaWRsZSBWQ1BVIGl0IGFs d2F5cyBhc3N1bWVzIHRoYXQgVkNQVQo+Pj4+IGlzIGF2YWlsYWJsZToKPj4+Pgo+Pj4+IMKgwqDC oMKgwqAgd2FrZV91cF9wcm9jZXNzKCkKPj4+PiDCoMKgwqDCoMKgwqAgdHJ5X3RvX3dha2VfdXAo KQo+Pj4+IMKgwqDCoMKgwqDCoMKgIHNlbGVjdF90YXNrX3JxX2ZhaXIoKQo+Pj4+IMKgwqDCoMKg wqDCoMKgwqAgYXZhaWxhYmxlX2lkbGVfY3B1KCkKPj4+PiDCoMKgwqDCoMKgwqDCoMKgwqAgdmNw dV9pc19wcmVlbXB0ZWQoKcKgwqDCoCAvLyByZXR1cm4gZmFsc2U7Cj4+Pj4KPj4+PiBXaGljaCBp cywgb2J2aW91c2x5LCBub3QgdGhlIGNhc2UuCj4+Pj4KPj4+PiBUaGlzIFJGQyBwYXRjaCBzZXQg YWRkcyBhIHNpbXBsZSB2Y3B1X2lzX3ByZWVtcHRlZCgpIGltcGxlbWVudGF0aW9uIHNvCj4+Pj4g dGhhdCBzY2hlZHVsZXIgY2FuIG1ha2UgYmV0dGVyIGRlY2lzaW9ucyB3aGVuIGl0IHNlYXJjaCBm b3IgdGhlIGlkbGUKPj4+PiAodilDUFUuCj4+PiBIaSwKPj4+Cj4+PiBBIGdlbnRsZSBwaW5nLgo+ Pj4KPj4+IMKgwqDCoMKgLXNzCj4+PiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwo+Pj4ga3ZtYXJtIG1haWxpbmcgbGlzdAo+Pj4ga3ZtYXJtQGxpc3RzLmNz LmNvbHVtYmlhLmVkdQo+Pj4gaHR0cHM6Ly9saXN0cy5jcy5jb2x1bWJpYS5lZHUvbWFpbG1hbi9s aXN0aW5mby9rdm1hcm0KPj4+IC4KPj4KPj4gSGkgU2VyZ2V5LAo+Pgo+PiBJIGhhdmUgYSBzZXQg b2YgcGF0Y2hlcyBzaW1pbGFyIHRvIHlvdXJzLgo+Pgo+PiBodHRwczovL2xvcmUua2VybmVsLm9y Zy9sa21sLzIwMTkxMjI2MTM1ODMzLjEwNTItMS15ZXplbmdydWFuQGh1YXdlaS5jb20vCj4KPiBJ dCByZWFsbHkgaXNuJ3QgdGhlIHNhbWUgdGhpbmcgYXQgYWxsLiBZb3UgYXJlIGV4cG9zaW5nIFBW IHNwaW5sb2NrcywKPiB3aGlsZSBTZXJnZXkgZXhwb3NlcyBwcmVlbXB0aW9uIHRvIHZjcHVzLiBU aGUgZm9ybWVyIGlzIGEgbWFzc2l2ZSwKPiBhbmQgcHJvYmFibHkgdW5uZWNlc3Nhcnkgc3VwZXJz ZXQgb2YgdGhlIGxhdGVyLCB3aGljaCBvbmx5IGltcGFjdHMKPiB0aGUgc2NoZWR1bGVyIChpdCBk b2Vzbid0IGNoYW5nZSB0aGUgd2F5IGxvY2tzIGFyZSBpbXBsZW1lbnRlZCkuCj4KPiBZb3UgcmVh bGx5IHNob3VsZG4ndCBjb25mbGF0ZSB0aGUgdHdvICh3aGljaCB5b3UgaGF2ZSBkb25lIGluIHlv dXIKPiBzZXJpZXMpLgo+Cj4gwqDCoMKgwqDCoMKgwqAgTS4KCgpIaSBNYXJjLAoKQWN0dWFsbHks IGJvdGggc2VyaWVzIHN1cHBvcnQgcGFyYXZpcnR1YWxpemF0aW9uIHZjcHVfaXNfcHJlZW1wdGVk LiBNeQpzZXJpZXMgcmVnYXJkIHRoaXMgYXMgUFYgbG9jaywgYnV0IG9ubHkgdGhlIHZjcHVfaXNf cHJlZW1wdGVkIGludGVyZmFjZQpvZiBwdl9sb2NrX29wdCBpcyBpbXBsZW1lbnRlZC4KCkV4Y2Vw dCB3YWtlX3VwX3Byb2Nlc3MoKSwgdGhlIHZjcHVfaXNfcHJlZW1wdGVkIGludGVyZmFjZSBvZiB0 aGUgY3VycmVudAprZXJuZWwgaXMgdXNlZCBpbiB0aGUgZm9sbG93aW5nIHNjZW5hcmlvczoKCmtl cm5lbC9zY2hlZC9jb3JlLmM6wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgIDwtLS0tIHdha2VfdXBfcHJvY2VzcygpCi0tLS0tLS0tLS0tLS0tLS0t LS0tCmF2YWlsYWJsZV9pZGxlX2NwdQrCoMKgwqAgdmNwdV9pc19wcmVlbXB0ZWQKCmtlcm5lbC9s b2NraW5nL3J3c2VtLmM6Ci0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tCnJ3c2VtX29wdGltaXN0aWNf c3BpbgrCoMKgwqAgcndzZW1fc3Bpbl9vbl9vd25lcgrCoMKgwqAgwqDCoMKgIG93bmVyX29uX2Nw dQrCoMKgwqAgwqDCoMKgIMKgwqDCoCB2Y3B1X2lzX3ByZWVtcHRlZAoKa2VybmVsL2xvY2tpbmcv bXV0ZXguYzoKLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0KbXV0ZXhfb3B0aW1pc3RpY19zcGluCsKg wqDCoCBtdXRleF9zcGluX29uX293bmVyCsKgwqDCoCDCoMKgwqAgdmNwdV9pc19wcmVlbXB0ZWQK Cmtlcm5lbC9sb2NraW5nL29zcV9sb2NrLmM6Ci0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tCm9z cV9sb2NrCsKgwqDCoCB2Y3B1X2lzX3ByZWVtcHRlZAoKClRoYW5rcywKClplbmdydWFuCgoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtl cm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0 dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5l bAo=