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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j8b0r-0002YA-Eu; Mon, 02 Mar 2020 02:40:57 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j8b0o-0002WS-NF for linux-arm-kernel@lists.infradead.org; Mon, 02 Mar 2020 02:40:56 +0000 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 66F8A3F26BA126D15212; Mon, 2 Mar 2020 10:40:39 +0800 (CST) Received: from [127.0.0.1] (10.173.222.27) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.439.0; Mon, 2 Mar 2020 10:40:32 +0800 Subject: Re: [PATCH v4 16/20] KVM: arm64: GICv4.1: Allow SGIs to switch between HW and SW interrupts To: Marc Zyngier References: <20200214145736.18550-1-maz@kernel.org> <20200214145736.18550-17-maz@kernel.org> <6798eb13-a7e9-2a92-91b2-9b657962ea79@huawei.com> <7aa668a5920b8deb8c2ee2fec3ef69b3@kernel.org> From: Zenghui Yu Message-ID: <865e3cc6-19e3-a1ec-84a6-8c15ad738345@huawei.com> Date: Mon, 2 Mar 2020 10:40:30 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.2.0 MIME-Version: 1.0 In-Reply-To: <7aa668a5920b8deb8c2ee2fec3ef69b3@kernel.org> Content-Language: en-US X-Originating-IP: [10.173.222.27] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200301_184054_926530_5194EECB X-CRM114-Status: GOOD ( 16.86 ) 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: Lorenzo Pieralisi , Jason Cooper , kvm@vger.kernel.org, Suzuki K Poulose , linux-kernel@vger.kernel.org, Eric Auger , Robert Richter , James Morse , Julien Thierry , Thomas Gleixner , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgTWFyYywKCk9uIDIwMjAvMi8yOSAzOjE2LCBNYXJjIFp5bmdpZXIgd3JvdGU6Cj4gSGkgWmVu Z2h1aSwKPiAKPiBPbiAyMDIwLTAyLTIwIDAzOjU1LCBaZW5naHVpIFl1IHdyb3RlOgo+PiBIaSBN YXJjLAo+Pgo+PiBPbiAyMDIwLzIvMTQgMjI6NTcsIE1hcmMgWnluZ2llciB3cm90ZToKPj4+IElu IG9yZGVyIHRvIGxldCBhIGd1ZXN0IGJ1eSBpbiB0aGUgbmV3LCBhY3RpdmUtbGVzcyBTR0lzLCB3 ZQo+Pj4gbmVlZCB0byBiZSBhYmxlIHRvIHN3aXRjaCBiZXR3ZWVuIHRoZSB0d28gbW9kZXMuCj4+ Pgo+Pj4gSGFuZGxlIHRoaXMgYnkgc3RvcHBpbmcgYWxsIGd1ZXN0IGFjdGl2aXR5LCB0cmFuc2Zl ciB0aGUgc3RhdGUKPj4+IGZyb20gb25lIG1vZGUgdG8gdGhlIG90aGVyLCBhbmQgcmVzdW1lIHRo ZSBndWVzdC4KPj4+Cj4+PiBTaWduZWQtb2ZmLWJ5OiBNYXJjIFp5bmdpZXIgPG1hekBrZXJuZWwu b3JnPgo+Pgo+PiBbLi4uXQo+Pgo+Pj4gZGlmZiAtLWdpdCBhL3ZpcnQva3ZtL2FybS92Z2ljL3Zn aWMtdjMuYyBiL3ZpcnQva3ZtL2FybS92Z2ljL3ZnaWMtdjMuYwo+Pj4gaW5kZXggMWJjMDliNTIz NDg2Li4yYzlmYzEzZTJjNTkgMTAwNjQ0Cj4+PiAtLS0gYS92aXJ0L2t2bS9hcm0vdmdpYy92Z2lj LXYzLmMKPj4+ICsrKyBiL3ZpcnQva3ZtL2FybS92Z2ljL3ZnaWMtdjMuYwo+Pj4gQEAgLTU0MCw2 ICs1NDAsOCBAQCBpbnQgdmdpY192M19tYXBfcmVzb3VyY2VzKHN0cnVjdCBrdm0gKmt2bSkKPj4+ IMKgwqDCoMKgwqDCoMKgwqDCoCBnb3RvIG91dDsKPj4+IMKgwqDCoMKgwqAgfQo+Pj4gwqAgK8Kg wqDCoCBpZiAoa3ZtX3ZnaWNfZ2xvYmFsX3N0YXRlLmhhc19naWN2NF8xKQo+Pj4gK8KgwqDCoMKg wqDCoMKgIHZnaWNfdjRfY29uZmlndXJlX3ZzZ2lzKGt2bSk7Cj4+PiDCoMKgwqDCoMKgIGRpc3Qt PnJlYWR5ID0gdHJ1ZTsKPj4+IMKgwqDCoCBvdXQ6Cj4+Cj4+IElzIHRoZXJlIGFueSByZWFzb24g dG8gaW52b2tlIHZnaWNfdjRfY29uZmlndXJlX3ZzZ2lzKCkgaGVyZT8KPj4gVGhpcyBpcyBjYWxs ZWQgb24gdGhlIGZpcnN0IFZDUFUgcnVuLCB0aHJvdWdoIGt2bV92Z2ljX21hcF9yZXNvdXJjZXMo KS4KPj4gU2hvdWxkbid0IHRoZSB2U0dJIGNvbmZpZ3VyYXRpb24gb25seSBkcml2ZW4gYnkgYSBH SUNEX0NUTFIubkFTU0dJcmVxCj4+IHdyaXRpbmcgKGZyb20gZ3Vlc3QsIG9yIGZyb20gdXNlcnNw YWNlIG1heWJlKT8KPiAKPiBXaGF0IEknbSB0cnlpbmcgdG8gY2F0Y2ggaGVyZSBpcyB0aGUgZ3Vl c3QgdGhhdCBoYXMgYmVlbiByZXN0b3JlZCB3aXRoCj4gbkFTU0dJcmVxIHNldC4gQXQgdGhlIG1v bWVudCwgd2UgZG9uJ3QgZG8gYW55dGhpbmcgb24gdGhlIHVzZXJzcGFjZQo+IHNpZGUsIGJlY2F1 c2UgdGhlIHZtbSBjb3VsZCBkZWNpZGUgdG8gd3JpdGUgdGhhdCBwYXJ0aWN1bGFyIGJpdAo+IG11 bHRpcGxlIHRpbWVzLCBhbmQgc3dpdGNoaW5nIGJldHdlZW4gdGhlIHR3byBtb2RlcyBpcyBleHBl bnNpdmUgKG5vdAo+IHRvIG1lbnRpb24gdGhhdCBhbGwgdGhlIHZjcHVzIG1heSBub3QgaGF2ZSBi ZWVuIGNyZWF0ZWQgeWV0KS4KPiAKPiBNb3ZpbmcgaXQgdG8gdGhlIGZpcnN0IHJ1biBtYWtlcyBh bGwgdGhlc2UgcGl0ZmFsbHMgZ28gYXdheSAod2UgaGF2ZSB0aGUKPiBmaW5hbCBuQVNTU0dJcmVx IHZhbHVlLCBhbmQgYWxsIHRoZSB2Y3B1cyBhcmUgYWNjb3VudGVkIGZvcikuCgpTbyB3aGF0IHdp bGwgaGFwcGVuIG9uIHJlc3RvcmF0aW9uIGlzIChyb3VnaGx5KToKCiAgLSBmb3IgR0lDUl9JU1BF TlIwOiBXZSB3aWxsIHJlc3RvcmUgdGhlIHBlbmRpbmcgc3RhdHVzIG9mIHZTR0lzIGludG8KICAg IHNvZnR3YXJlIHBlbmRpbmdfbGF0Y2gsIGp1c3QgbGlrZSB3aGF0IHdlJ3ZlIGRvbmUgZm9yIG5v cm1hbCBTR0lzLgogIC0gZm9yIEdJQ0RfQ1RMUi5uQVNTR0lyZXE6IFdlIHdpbGwgb25seSByZWNv cmQgdGhlIHdyaXR0ZW4gdmFsdWUuCiAgICAoTm90ZSB0byBteXNlbGY6IE5vIGludm9jYXRpb24g b2YgY29uZmlndXJlX3ZzZ2lzKCkgaW4gdWFjY2Vzc193cml0ZQogICAgIGNhbGxiYWNrLCBJIHBy ZXZpb3VzbHkgbWl4ZWQgaXQgdXAgd2l0aCB0aGUgZ3Vlc3Qgd3JpdGUgY2FsbGJhY2suKQogIC0g RmluYWxseSwgeW91IGNob29zZSB0aGUgZmlyc3QgdmNwdSBydW4gYXMgdGhlIGFwcHJvcHJpYXRl IHBvaW50IHRvCiAgICBwb3RlbnRpYWxseSBmbHVzaCB0aGUgcGVuZGluZyBzdGF0dXMgdG8gSFcg YWNjb3JkaW5nIHRvIHRoZSBmaW5hbAogICAgbkFTU0dJcmVxIHZhbHVlLgoKPiAKPiBEb2VzIHRo aXMgbWFrZSBzZW5zZSB0byB5b3U/CgpZZWFoLCBpdCBzb3VuZHMgbGlrZSBhIGdvb2QgaWRlYSEg QW5kIHBsZWFzZSBpZ25vcmUgd2hhdCBJJ3ZlIHJlcGxpZWQgdG8KcGF0Y2ggIzE1LCBJIG9idmlv dXNseSBtaXNzZWQgeW91ciBpbnRlbnRpb24gYXQgdGhhdCB0aW1lLCBzb3JyeS4uLgoKQnV0IGNh biB3ZSBtb3ZlIHRoaXMgaHVuayB0byBzb21lIHBsYWNlcyBtb3JlIGFwcHJvcHJpYXRlLCBmb3Ig ZXhhbXBsZSwKcHV0IGl0IHRvZ2V0aGVyIHdpdGggdGhlIEdJQ0RfQ1RMUidzIHVhY2Nlc3Nfd3Jp dGUgY2hhbmdlPyBJdCBtaWdodCBtYWtlCnRoaW5ncyBhIGJpdCBjbGVhcmVyIGZvciBvdGhlciBy ZXZpZXdlcnMuIDotKQoKClRoYW5rcywKWmVuZ2h1aQoKCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0Cmxp bnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFk Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK