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Tue, 01 Dec 2020 14:35:02 +0000 MIME-Version: 1.0 Date: Tue, 01 Dec 2020 14:35:02 +0000 From: Marc Zyngier To: "wangyanan (Y)" Subject: Re: [RFC PATCH 2/3] KVM: arm64: Fix handling of merging tables into a block entry In-Reply-To: <2e92a511-496c-d446-95f4-6211ec8b4bb6@huawei.com> References: <20201130121847.91808-1-wangyanan55@huawei.com> <20201130121847.91808-3-wangyanan55@huawei.com> <20201130133421.GB24837@willie-the-truck> <67e9e393-1836-eca7-4235-6f4a19fed652@huawei.com> <20201130160119.GA25051@willie-the-truck> <868a4403-10d3-80f3-4ae1-a490813c55e2@huawei.com> <20201201134606.GB26973@willie-the-truck> <2e92a511-496c-d446-95f4-6211ec8b4bb6@huawei.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: wangyanan55@huawei.com, will@kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, gshan@redhat.com, qperret@google.com, wanghaibin.wang@huawei.com, yezengruan@huawei.com, zhukeqian1@huawei.com, yuzenghui@huawei.com, jiangkunkun@huawei.com, wangjingyi11@huawei.com, lushenming@huawei.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201201_093505_960439_639E9008 X-CRM114-Status: GOOD ( 17.03 ) 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: jiangkunkun@huawei.com, Gavin Shan , lushenming@huawei.com, Suzuki K Poulose , Catalin Marinas , zhukeqian1@huawei.com, Quentin Perret , wangjingyi11@huawei.com, linux-kernel@vger.kernel.org, yezengruan@huawei.com, James Morse , linux-arm-kernel@lists.infradead.org, yuzenghui@huawei.com, wanghaibin.wang@huawei.com, Will Deacon , Julien Thierry 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 SGkgWWFuYW4sCgpPbiAyMDIwLTEyLTAxIDE0OjExLCB3YW5neWFuYW4gKFkpIHdyb3RlOgo+IE9u IDIwMjAvMTIvMSAyMTo0NiwgV2lsbCBEZWFjb24gd3JvdGU6Cj4+IE9uIFR1ZSwgRGVjIDAxLCAy MDIwIGF0IDEwOjMwOjQxQU0gKzA4MDAsIHdhbmd5YW5hbiAoWSkgd3JvdGU6CgpbLi4uXQoKPj4+ IFRoZSBwb2ludCBpcyBhdCBiLmlpaSB3aGVyZSB0aGUgVExCSSBpcyBub3QgZW5vdWdoLiBUaGVy ZSBhcmUgbWFueSAKPj4+IHBhZ2UKPj4+IG1hcHBpbmdzIHRoYXQgd2UgbmVlZCB0byBtZXJnZSBp bnRvIGEgYmxvY2sgbWFwcGluZy4KPj4+IAo+Pj4gV2UgaW52YWxpZGF0ZSB0aGUgVExCIGZvciB0 aGUgaW5wdXQgYWRkcmVzcyB3aXRob3V0IGxldmVsIGhpbnQgYXQgCj4+PiBiLmlpaSwgYnV0Cj4+ PiB0aGlzIG9wZXJhdGlvbiBqdXN0IGZsdXNoIFRMQiBmb3Igb25lIHBhZ2UgbWFwcGluZywgdGhl cmUKPj4+IAo+Pj4gYXJlIHN0aWxsIHNvbWUgVExCIGVudHJpZXMgZm9yIHRoZSBvdGhlciBwYWdl IG1hcHBpbmdzIGluIHRoZSBjYWNoZSwgCj4+PiB0aGUgTU1VCj4+PiBoYXJkd2FyZSB3YWxrZXIg Y2FuIHN0aWxsIGhpdCB0aGVzZSBlbnRyaWVzIG5leHQgdGltZS4KPj4gQWgsIHllcywgSSBzZWUu IFRoYW5rcy4gSSBoYWRuJ3QgY29uc2lkZXJlZCB0aGUgY2FzZSB3aGVyZSB0aGVyZSBhcmUgCj4+ IHRhYmxlCj4+IGVudHJpZXMgYmVuZWF0aCB0aGUgYW5jaG9yLiBTbyBob3cgYWJvdXQgdGhlIGRp ZmYgYmVsb3c/Cj4+IAo+PiBXaWxsCj4+IAo+PiAtLS0+OAo+IAo+IEhpLCBJIHRoaW5rIGl0J3Mg aW5hcHByb3ByaWF0ZSB0byBwdXQgdGhlIFRMQkkgb2YgYWxsIHRoZSBsZWFmIGVudHJpZXMKPiBp biBmdW5jdGlvbiBzdGFnZTJfbWFwX3dhbGtfdGFibGVfcG9zdCgpLAo+IAo+IGJlY2F1c2UgdGhl ICpwdGVwIG11c3QgYmUgYW4gdXBwZXIgdGFibGUgZW50cnkgd2hlbiB3ZSBlbnRlcgo+IHN0YWdl Ml9tYXBfd2Fsa190YWJsZV9wb3N0KCkuCj4gCj4gV2Ugc2hvdWxkIG1ha2UgdGhlIFRMQkkgZm9y IGV2ZXJ5IGxlYWYgZW50cnkgbm90IHRhYmxlIGVudHJ5IGluIHRoZQo+IGxhc3QgbG9va3VwIGxl dmVsLMKgIGp1c3QgYXMgSSBhbSBwcm9wb3NpbmcKPiAKPiB0byBhZGQgdGhlIGFkZGl0aW9uYWwg VExCSSBpbiBmdW5jdGlvbiBzdGFnZTJfbWFwX3dhbGtfbGVhZigpLgoKQ291bGQgeW91IG1ha2Ug eW91ciBjb25jZXJucyBleHBsaWNpdD8gQXMgZmFyIGFzIEkgY2FuIHRlbGwsIHRoaXMgc2hvdWxk CmFkZHJlc3MgdGhlIGJ1ZyB5b3UgZm91bmQsIGF0IGxlYXN0IGZyb20gYSBjb3JyZWN0bmVzcyBw ZXJzcGVjdGl2ZS4KCkFyZSB5b3Ugd29ycmllZCBhYm91dCB0aGUgaW1wYWN0IG9mIHRoZSBmdWxs IFMyIGludmFsaWRhdGlvbj8gT3IgZG8geW91CnNlZSBhbm90aGVyIGNvcnJlY3RuZXNzIGlzc3Vl PwoKVGhhbmtzLAoKICAgICAgICAgTS4KLS0gCkphenogaXMgbm90IGRlYWQuIEl0IGp1c3Qgc21l bGxzIGZ1bm55Li4uCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3Rz LmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5m by9saW51eC1hcm0ta2VybmVsCg==