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Mon, 23 Mar 2020 08:25:27 +0000 MIME-Version: 1.0 Date: Mon, 23 Mar 2020 08:25:27 +0000 From: Marc Zyngier To: Zenghui Yu Subject: Re: [PATCH v5 20/23] KVM: arm64: GICv4.1: Plumb SGI implementation selection in the distributor In-Reply-To: References: <20200304203330.4967-1-maz@kernel.org> <20200304203330.4967-21-maz@kernel.org> <72832f51-bbde-8502-3e03-189ac20a0143@huawei.com> <4a06fae9c93e10351276d173747d17f4@kernel.org> <1c9fdfc8-bdb2-88b6-4bdc-2b9254dfa55c@huawei.com> <256b58a9679412c96600217f316f424f@kernel.org> Message-ID: <1c10593ac5b75f37c6853fbc74daa481@kernel.org> X-Sender: maz@kernel.org User-Agent: Roundcube Webmail/1.3.10 X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, lorenzo.pieralisi@arm.com, jason@lakedaemon.net, rrichter@marvell.com, tglx@linutronix.de, eric.auger@redhat.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: Lorenzo Pieralisi , Jason Cooper , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Robert Richter , Thomas Gleixner , 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu SGkgWmVuZ2h1aSwKClsuLi5dCgo+PiBBbmQgYWN0dWFsbHksIG1heWJlIHdlIGNhbiBoYW5kbGUg dGhhdCBwcmV0dHkgY2hlYXBseS4gSWYgdXNlcnNwYWNlCj4+IHRyaWVzIHRvIHJlc3RvcmUgR0lD RF9UWVBFUjIgdG8gYSB2YWx1ZSB0aGF0IGlzbid0IHdoYXQgS1ZNIGNhbgo+PiBvZmZlciwgd2Ug anVzdCByZXR1cm4gYW4gZXJyb3IuIEV4YWN0bHkgbGlrZSB3ZSBkbyBmb3IgR0lDRF9JSURSLgo+ PiBIZW5jZSB0aGUgZm9sbG93aW5nIHBhdGNoOgo+PiAKPj4gZGlmZiAtLWdpdCBhL3ZpcnQva3Zt L2FybS92Z2ljL3ZnaWMtbW1pby12My5jIAo+PiBiL3ZpcnQva3ZtL2FybS92Z2ljL3ZnaWMtbW1p by12My5jCj4+IGluZGV4IDI4YjYzOWZkMWFiYy4uZTcyZGNjNDU0MjQ3IDEwMDY0NAo+PiAtLS0g YS92aXJ0L2t2bS9hcm0vdmdpYy92Z2ljLW1taW8tdjMuYwo+PiArKysgYi92aXJ0L2t2bS9hcm0v dmdpYy92Z2ljLW1taW8tdjMuYwo+PiBAQCAtMTU2LDYgKzE1Niw3IEBAIHN0YXRpYyBpbnQgdmdp Y19tbWlvX3VhY2Nlc3Nfd3JpdGVfdjNfbWlzYyhzdHJ1Y3QgCj4+IGt2bV92Y3B1ICp2Y3B1LAo+ PiAgwqDCoMKgwqAgc3RydWN0IHZnaWNfZGlzdCAqZGlzdCA9ICZ2Y3B1LT5rdm0tPmFyY2gudmdp YzsKPj4gCj4+ICDCoMKgwqDCoCBzd2l0Y2ggKGFkZHIgJiAweDBjKSB7Cj4+ICvCoMKgwqAgY2Fz ZSBHSUNEX1RZUEVSMjoKPj4gIMKgwqDCoMKgIGNhc2UgR0lDRF9JSURSOgo+PiAgwqDCoMKgwqDC oMKgwqDCoCBpZiAodmFsICE9IHZnaWNfbW1pb19yZWFkX3YzX21pc2ModmNwdSwgYWRkciwgbGVu KSkKPj4gIMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoCByZXR1cm4gLUVJTlZBTDsKPj4gCj4+IEJl aW5nIGEgUk8gcmVnaXN0ZXIsIHdyaXRpbmcgc29tZXRoaW5nIHRoYXQgaXNuJ3QgY29tcGF0aWJs ZSB3aXRoIHRoZQo+PiBwb3NzaWJsZSBiZWhhdmlvdXIgb2YgdGhlIGh5cGVydmlzb3Igd2lsbCBq dXN0IHJldHVybiBhbiBlcnJvci4KPiAKPiBUaGlzIGlzIHJlYWxseSBhIG5pY2UgcG9pbnQgdG8g YWRkcmVzcyBteSBjb25jZXJuISBJJ20gaGFwcHkgdG8gc2VlCj4gdGhpcyBpbiB2NiBub3cuCj4g Cj4+IAo+PiBXaGF0IGRvIHlvdSB0aGluaz8KPiAKPiBJIGFncmVlZCB3aXRoIHlvdSwgd2l0aCBh IGJpdCBuZXJ2b3VzIHRob3VnaC4gU29tZSBvbGQgZ3Vlc3RzICh3aGljaAo+IGhhdmUgbm8ga25v d2xlZGdlIGFib3V0IEdJQ3Y0LjEgdlNHSXMgYW5kIGRvbid0IGNhcmUgYWJvdXQgbkFTU0dJY2Fw Cj4gYXQgYWxsKSB3aWxsIGFsc28gZmFpbCB0byBtaWdyYXRlIGZyb20gQSB0byBCLCBqdXN0IGJl Y2F1c2Ugbm93IHdlCj4gcHJlc2VudCB0d28gZGlmZmVyZW50ICh1bnVzZWQpIEdJQ0RfVFlQRVIy IHJlZ2lzdGVycyB0byB0aGVtLgo+IAo+IElzIGl0IGEgbGl0dGxlIHVuZmFpciB0byB0aGVtIDot KSA/CgpJIG5ldmVyIHByZXRlbmRlZCB0byBiZSBmYWlyISA7LSkKCkknbSBoYXBweSB0byBwcmV2 ZW50IG1pZ3JhdGluZyBmcm9tIGEgdjQuMSBzeXN0ZW0gKEEpIHRvIGEgdjQuMApzeXN0ZW0gKEIp LiBBcyBzb29uIGFzIHRoZSBndWVzdCBoYXMgcnVuLCBpdCBpc24ndCBzYWZlIHRvIGRvIHNvCihp dCBtYXkgaGF2ZSByZWFkIFRZUEVSMiwgYW5kIG5vdyBrbm93cyBhYm91dCB2U0dJcykuIFdlICpj b3VsZCoKdHJhY2sgdGhpcyBhbmQgZmluZCB3YXlzIHRvIG1pZ3JhdGUgdGhpcyBzdGF0ZSBhcyB3 ZWxsLCBidXQgaXQKZmVlbHMgZnJhZ2lsZS4KCk1pZ3JhdGluZyBmcm9tIEIgdG8gQSBpcyBtb3Jl IGFwcGVhbGluZy4gSXQgc2hvdWxkIGJlIHBvc3NpYmxlIHRvCmRvIHNvIHdpdGhvdXQgbXVjaCBk aWZmaWN1bHR5IChqdXN0IGNoZWNrIHRoYXQgdGhlIG5BU1NHSWNhcCBiaXQKaXMgZWl0aGVyIDAg b3IgZXF1YWwgdG8gS1ZNJ3MgdmlldyBvZiB0aGUgY2FwYWJpbGl0eSkuCgpCdXQgb3ZlcmFsbCBJ IHNlcmlvdXNseSBkb3VidCB3ZSBjYW4gZWFzaWx5IG1pZ3JhdGUgZ3Vlc3RzIGFjcm9zcwp2ZXJ5 IGRpZmZlcmVudCBIVy4gV2UndmUgYmVlbiB0YWxraW5nIGFib3V0IHRoaXMgZm9yIHllYXJzLCBh bmQKd2Ugc3RpbGwgZG9uJ3QgaGF2ZSBhIGdvb2Qgc29sdXRpb24gZm9yIGl0IGdpdmVuIHRoZSBk aXZlcnNpdHkKb2YgdGhlIGVjb3N5c3RlbS4uLiA6LS8KClRoYW5rcywKCiAgICAgICAgIE0uCi0t IApKYXp6IGlzIG5vdCBkZWFkLiBJdCBqdXN0IHNtZWxscyBmdW5ueS4uLgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwprdm1hcm0gbWFpbGluZyBsaXN0Cmt2 bWFybUBsaXN0cy5jcy5jb2x1bWJpYS5lZHUKaHR0cHM6Ly9saXN0cy5jcy5jb2x1bWJpYS5lZHUv bWFpbG1hbi9saXN0aW5mby9rdm1hcm0K