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([2001:b07:6468:f312:3c1c:ffba:c624:29b8]) by smtp.gmail.com with ESMTPSA id z20sm3835520ejb.68.2020.05.28.03.53.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 May 2020 03:53:28 -0700 (PDT) Subject: Re: [PATCH RFCv2 9/9] arm64: Support async page fault To: Marc Zyngier , Gavin Shan References: <20200508032919.52147-1-gshan@redhat.com> <20200508032919.52147-10-gshan@redhat.com> <81adf013-3de7-23e6-7648-8aec821b033c@redhat.com> <8b09c298fab15e2629c65e8ee98a8a29@kernel.org> From: Paolo Bonzini Message-ID: <59904c11-6965-510f-4848-bc1e91af49fd@redhat.com> Date: Thu, 28 May 2020 12:53:26 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <8b09c298fab15e2629c65e8ee98a8a29@kernel.org> Content-Language: en-US X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Cc: catalin.marinas@arm.com, linux-kernel@vger.kernel.org, shan.gavin@gmail.com, will@kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu T24gMjgvMDUvMjAgMDk6MDMsIE1hcmMgWnluZ2llciB3cm90ZToKPiBUaGUgY3VycmVudCBzdGF0 ZSBvZiB0aGUgYXJjaGl0ZWN0dXJlIGRvZXNuJ3Qgc2VlbSB0byBsZWF2ZSBtdWNoIGxlZXdheSBp bgo+IHRlcm1zIG9mIFNXIGNyZWF0aXZpdHkgaGVyZS4gWW91IGp1c3QgY2FuJ3QgYWxsb2NhdGUg eW91ciBvd24gSVNTIGVuY29kaW5nCj4gd2l0aG91dCByaXNraW5nIGEgY2xhc2ggd2l0aCBmdXR1 cmUgcmV2aXNpb25zIG9mIHRoZSBhcmNoaXRlY3R1cmUuCj4gSXQgaXNuJ3QgZXZlbiBjbGVhciB3 aGV0aGVyIHRoZSB2YWx1ZSB5b3UgcHV0IHdvdWxkIHN0aWNrIGluIEVTUl9FTDEKPiBpZiBpdCBp c24ndCBhIHZhbGlkIHZhbHVlIGZvciB0aGlzIENQVSAoc2VlIHRoZSBkZWZpbml0aW9uIG9mICdS ZXNlcnZlZCcKPiBpbiB0aGUgQVJNIEFSTSkuCj4gCj4gQWxsb2NhdGluZyBzdWNoIGEgc3luZHJv bWUgd291bGQgcmVxdWlyZSBmcm9tIEFSTToKPiAKPiAtIHRoZSBndWFyYW50ZWUgdGhhdCBubyBl eGlzdGluZyBpbXBsZW1lbnRhdGlvbiwgaXJyZXNwZWN0aXZlIG9mIHRoZQo+IMKgIGltcGxlbWVu dGVyLCBjYW4gY29wZSB3aXRoIHRoZSBJU1MgZW5jb2Rpbmcgb2YgeW91ciBjaG9pY2UsCj4gCj4g LSB0aGUgd3JpdHRlbiBwcm9taXNlIGluIHRoZSBhcmNoaXRlY3R1cmUgdGhhdCBzb21lIEVDL0lT UyB2YWx1ZXMKPiDCoCBhcmUgcmVzZXJ2ZWQgZm9yIFNXLCBhbmQgdGhhdCBwcm9taXNlIHRvIGFw cGx5IHJldHJvc3BlY3RpdmVseS4KPiAKPiBUaGlzIGlzIHNvbWV3aGF0IHVubGlrZWx5IHRvIGhh cHBlbi4KCldlbGwsIHRoYXQncyBhIGV1cGhlbWlzbSBwcm9iYWJseS4gIE9uIHg4NiB3ZSdyZSBz b21ld2hhdCBsdWNreSB0aGF0CnRoZXJlJ3MgYW4gYXJjaGl0ZWN0dXJhbCB3YXkgZm9yIGluamVj dGluZyBoeXBlcnZpc29yIHZtZXhpdCBkaXJlY3RseSBpbgp0aGUgZ3Vlc3QsIGFuZCB3ZSBjYW4g cGlnZ3liYWNrIG9uIHRoYXQgZm9yIGFzeW5jIHBhZ2UgZmF1bHRzICh3aGljaCBhcmUKZXNzZW50 aWFsbHkgc3RhZ2UyIHBhZ2UgZmF1bHRzIHRoYXQgYXJlIHByb2Nlc3NlZCBieSB0aGUgZ3Vlc3Qp LgoKSXMgaXQgcG9zc2libGUgdG8gcmV1c2UgRUwyIGV4Y2VwdGlvbiBjb2RlcyAvIHN5bmRyb21l cyBzb21laG93PyAgKEkKaGF2ZW4ndCBjaGVja2VkIGluIHRoZSBBUk0gQVJNIHRoZSBkaWZmZXJl bmNlcyBiZXR3ZWVuIHRoZSBFTDEgYW5kIEVMMgpzeW5kcm9tZSByZWdpc3RlcnMpLgoKUGFvbG8K Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmt2bWFybSBt YWlsaW5nIGxpc3QKa3ZtYXJtQGxpc3RzLmNzLmNvbHVtYmlhLmVkdQpodHRwczovL2xpc3RzLmNz LmNvbHVtYmlhLmVkdS9tYWlsbWFuL2xpc3RpbmZvL2t2bWFybQo=