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Thu, 01 Dec 2022 14:00:16 -0800 (PST) Message-ID: Date: Thu, 1 Dec 2022 23:00:13 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Subject: Re: [PATCH v2 21/50] KVM: MIPS: Hardcode callbacks to hardware virtualization extensions Content-Language: en-US To: Sean Christopherson , Paolo Bonzini , Marc Zyngier , Huacai Chen , Aleksandar Markovic , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Matthew Rosato , Eric Farman , Vitaly Kuznetsov , David Woodhouse , Paul Durrant Cc: James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Atish Patra , David Hildenbrand , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, Yuan Yao , Cornelia Huck , Isaku Yamahata , Fabiano Rosas , Michael Ellerman , Kai Huang , Chao Gao , Thomas Gleixner References: <20221130230934.1014142-1-seanjc@google.com> <20221130230934.1014142-22-seanjc@google.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= In-Reply-To: <20221130230934.1014142-22-seanjc@google.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221201_140020_961279_3790E78F X-CRM114-Status: GOOD ( 22.23 ) 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-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gMS8xMi8yMiAwMDowOSwgU2VhbiBDaHJpc3RvcGhlcnNvbiB3cm90ZToKPiBOb3cgdGhhdCBL Vk0gbm8gbG9uZ2VyIHN1cHBvcnRzIHRyYXAtYW5kLWVtdWxhdGUgKHNlZSBjb21taXQgNDVjN2U4 YWY0YTVlCj4gIk1JUFM6IFJlbW92ZSBLVk1fVEUgc3VwcG9ydCIpLCBoYXJkY29kZSB0aGUgTUlQ UyBjYWxsYmFja3MgdG8gdGhlCj4gdmlydHVhbGl6YXRpb24gY2FsbGJhY2tzLgo+IAo+IEhhcmNv ZGluZyB0aGUgY2FsbGJhY2tzIGVsaW1pbmF0ZXMgdGhlIHRlY2huaWNhbGx5LXVubmVjZXNzYXJ5 IGNoZWNrIG9uCj4gbm9uLU5VTEwga3ZtX21pcHNfY2FsbGJhY2tzIGluIGt2bV9hcmNoX2luaXQo KS4gIE1JUFMgaGFzIG5ldmVyIHN1cHBvcnRlZAo+IG11bHRpcGxlIGluLXRyZWUgbW9kdWxlcywg aS5lLiBiYXJyaW5nIGFuIG91dC1vZi10cmVlIG1vZHVsZSwgd2hlcmUKPiBjb3B5aW5nIGFuZCBy ZW5hbWluZyBrdm0ua28gY291bnRzIGFzICJvdXQtb2YtdHJlZSIsIEtWTSBjb3VsZCBuZXZlcgo+ IGVuY291bnRlciBhIG5vbi1OVUxMIHNldCBvZiBjYWxsYmFja3MgZHVyaW5nIG1vZHVsZSBpbml0 Lgo+IAo+IFRoZSBjYWxsYmFjayBjaGVjayBpcyBhbHNvIHN1YnRseSBicm9rZW4sIGFzIGl0IGlz IG5vdCB0aHJlYWQgc2FmZSwKPiBpLmUuIGlmIHRoZXJlIHdlcmUgbXVsdGlwbGUgbW9kdWxlcywg bG9hZGluZyBib3RoIGNvbmN1cnJlbnRseSB3b3VsZAo+IGNyZWF0ZSBhIHJhY2UgYmV0d2VlbiBj aGVja2luZyBhbmQgc2V0dGluZyBrdm1fbWlwc19jYWxsYmFja3MuCj4gCj4gR2l2ZW4gdGhhdCBv dXQtb2YtdHJlZSBzaGVuYW5pZ2FucyBhcmUgbm90IHRoZSBrZXJuZWwncyByZXNwb25zaWJpbGl0 eSwKPiBoYXJkY29kZSB0aGUgY2FsbGJhY2tzIHRvIHNpbXBsaWZ5IHRoZSBjb2RlLgo+IAo+IFNp Z25lZC1vZmYtYnk6IFNlYW4gQ2hyaXN0b3BoZXJzb24gPHNlYW5qY0Bnb29nbGUuY29tPgo+IC0t LQo+ICAgYXJjaC9taXBzL2luY2x1ZGUvYXNtL2t2bV9ob3N0LmggfCAgMiArLQo+ICAgYXJjaC9t aXBzL2t2bS9NYWtlZmlsZSAgICAgICAgICAgfCAgMiArLQo+ICAgYXJjaC9taXBzL2t2bS9jYWxs YmFjay5jICAgICAgICAgfCAxNCAtLS0tLS0tLS0tLS0tLQo+ICAgYXJjaC9taXBzL2t2bS9taXBz LmMgICAgICAgICAgICAgfCAgOSArKy0tLS0tLS0KPiAgIGFyY2gvbWlwcy9rdm0vdnouYyAgICAg ICAgICAgICAgIHwgIDcgKysrKy0tLQo+ICAgNSBmaWxlcyBjaGFuZ2VkLCA4IGluc2VydGlvbnMo KyksIDI2IGRlbGV0aW9ucygtKQo+ICAgZGVsZXRlIG1vZGUgMTAwNjQ0IGFyY2gvbWlwcy9rdm0v Y2FsbGJhY2suYwo+IAo+IGRpZmYgLS1naXQgYS9hcmNoL21pcHMvaW5jbHVkZS9hc20va3ZtX2hv c3QuaCBiL2FyY2gvbWlwcy9pbmNsdWRlL2FzbS9rdm1faG9zdC5oCj4gaW5kZXggMjhmMGJhOTdk YjcxLi4yODAzYzljMjFlZjkgMTAwNjQ0Cj4gLS0tIGEvYXJjaC9taXBzL2luY2x1ZGUvYXNtL2t2 bV9ob3N0LmgKPiArKysgYi9hcmNoL21pcHMvaW5jbHVkZS9hc20va3ZtX2hvc3QuaAo+IEBAIC03 NTgsNyArNzU4LDcgQEAgc3RydWN0IGt2bV9taXBzX2NhbGxiYWNrcyB7Cj4gICAJdm9pZCAoKnZj cHVfcmVlbnRlcikoc3RydWN0IGt2bV92Y3B1ICp2Y3B1KTsKPiAgIH07Cj4gICBleHRlcm4gc3Ry dWN0IGt2bV9taXBzX2NhbGxiYWNrcyAqa3ZtX21pcHNfY2FsbGJhY2tzOwoKSUlVQyB3ZSBjb3Vs ZCBldmVuIGNvbnN0aWZ5IHRoaXMgcG9pbnRlci4KCkFueXdheSwKUmV2aWV3ZWQtYnk6IFBoaWxp cHBlIE1hdGhpZXUtRGF1ZMOpIDxwaGlsbWRAbGluYXJvLm9yZz4KCj4gZGlmZiAtLWdpdCBhL2Fy Y2gvbWlwcy9rdm0vbWlwcy5jIGIvYXJjaC9taXBzL2t2bS9taXBzLmMKPiBpbmRleCBhZjI5NDkw ZDk3NDAuLmYwYTZjMjQ1ZDFmZiAxMDA2NDQKPiAtLS0gYS9hcmNoL21pcHMva3ZtL21pcHMuYwo+ ICsrKyBiL2FyY2gvbWlwcy9rdm0vbWlwcy5jCj4gQEAgLTEwMTIsMTcgKzEwMTIsMTIgQEAgbG9u ZyBrdm1fYXJjaF92bV9pb2N0bChzdHJ1Y3QgZmlsZSAqZmlscCwgdW5zaWduZWQgaW50IGlvY3Rs LCB1bnNpZ25lZCBsb25nIGFyZykKPiAgIAo+ICAgaW50IGt2bV9hcmNoX2luaXQodm9pZCAqb3Bh cXVlKQo+ICAgewo+IC0JaWYgKGt2bV9taXBzX2NhbGxiYWNrcykgewo+IC0JCWt2bV9lcnIoImt2 bTogbW9kdWxlIGFscmVhZHkgZXhpc3RzXG4iKTsKPiAtCQlyZXR1cm4gLUVFWElTVDsKPiAtCX0K PiAtCj4gLQlyZXR1cm4ga3ZtX21pcHNfZW11bGF0aW9uX2luaXQoJmt2bV9taXBzX2NhbGxiYWNr cyk7Cj4gKwlyZXR1cm4ga3ZtX21pcHNfZW11bGF0aW9uX2luaXQoKTsKPiAgIH0KPiAgIAo+ICAg dm9pZCBrdm1fYXJjaF9leGl0KHZvaWQpCj4gICB7Cj4gLQlrdm1fbWlwc19jYWxsYmFja3MgPSBO VUxMOwo+ICsKPiAgIH0KPiAgIAo+ICAgaW50IGt2bV9hcmNoX3ZjcHVfaW9jdGxfZ2V0X3NyZWdz KHN0cnVjdCBrdm1fdmNwdSAqdmNwdSwKPiBkaWZmIC0tZ2l0IGEvYXJjaC9taXBzL2t2bS92ei5j IGIvYXJjaC9taXBzL2t2bS92ei5jCj4gaW5kZXggYzcwNmY1ODkwYTA1Li5kYWZhYjAwM2VhMGQg MTAwNjQ0Cj4gLS0tIGEvYXJjaC9taXBzL2t2bS92ei5jCj4gKysrIGIvYXJjaC9taXBzL2t2bS92 ei5jCj4gQEAgLTMzMDQsNyArMzMwNCwxMCBAQCBzdGF0aWMgc3RydWN0IGt2bV9taXBzX2NhbGxi YWNrcyBrdm1fdnpfY2FsbGJhY2tzID0gewo+ICAgCS52Y3B1X3JlZW50ZXIgPSBrdm1fdnpfdmNw dV9yZWVudGVyLAo+ICAgfTsKPiAgIAo+IC1pbnQga3ZtX21pcHNfZW11bGF0aW9uX2luaXQoc3Ry dWN0IGt2bV9taXBzX2NhbGxiYWNrcyAqKmluc3RhbGxfY2FsbGJhY2tzKQo+ICsvKiBGSVhNRTog R2V0IHJpZCBvZiB0aGUgY2FsbGJhY2tzIG5vdyB0aGF0IHRyYXAtYW5kLWVtdWxhdGUgaXMgZ29u ZS4gKi8KPiArc3RydWN0IGt2bV9taXBzX2NhbGxiYWNrcyAqa3ZtX21pcHNfY2FsbGJhY2tzID0g Jmt2bV92el9jYWxsYmFja3M7CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVs QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9s aXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==