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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qgqHN-0090C4-1k; Thu, 14 Sep 2023 17:37:25 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qgqHK-0090Af-2j for linux-arm-kernel@lists.infradead.org; Thu, 14 Sep 2023 17:37:24 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7DD5761E40; Thu, 14 Sep 2023 17:37:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B111C433C8; Thu, 14 Sep 2023 17:37:14 +0000 (UTC) Date: Thu, 14 Sep 2023 18:37:12 +0100 From: Catalin Marinas To: Kuan-Ying Lee =?utf-8?B?KOadjuWGoOepjik=?= Cc: "dietmar.eggemann@arm.com" , "hughd@google.com" , "peterz@infradead.org" , "maz@kernel.org" , "rostedt@goodmis.org" , "rppt@kernel.org" , "yuzenghui@huawei.com" , "james.morse@arm.com" , "vschneid@redhat.com" , "bristot@redhat.com" , "juri.lelli@redhat.com" , "alexandru.elisei@arm.com" , "suzuki.poulose@arm.com" , "mingo@redhat.com" , "akpm@linux-foundation.org" , "mhiramat@kernel.org" , "bsegall@google.com" , "mgorman@suse.de" , "arnd@arndb.de" , "oliver.upton@linux.dev" , "vincent.guittot@linaro.org" , "will@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-trace-kernel@vger.kernel.org" , Qun-wei Lin =?utf-8?B?KOael+e+pOW0tCk=?= , "linux-mm@kvack.org" , "hyesoo.yu@samsung.com" , "kcc@google.com" , "kvmarm@lists.linux.dev" , "david@redhat.com" , Casper Li =?utf-8?B?KOadjuS4reamrik=?= , "steven.price@arm.com" , Chinwen Chang =?utf-8?B?KOW8temMpuaWhyk=?= , "eugenis@google.com" , "linux-arm-kernel@lists.infradead.org" , "pcc@google.com" , "vincenzo.frascino@arm.com" , "linux-arch@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "anshuman.khandual@arm.com" Subject: Re: [PATCH RFC 00/37] Add support for arm64 MTE dynamic tag storage reuse Message-ID: References: <20230823131350.114942-1-alexandru.elisei@arm.com> <0dc2afaf8a976ef8eb9af711fd941f1bbfd71321.camel@mediatek.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <0dc2afaf8a976ef8eb9af711fd941f1bbfd71321.camel@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230914_103722_969784_EA3AFDD2 X-CRM114-Status: GOOD ( 26.80 ) 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGkgS3Vhbi1ZaW5nLAoKT24gV2VkLCBTZXAgMTMsIDIwMjMgYXQgMDg6MTE6NDBBTSArMDAwMCwg S3Vhbi1ZaW5nIExlZSAo5p2O5Yag56mOKSB3cm90ZToKPiBPbiBXZWQsIDIwMjMtMDgtMjMgYXQg MTQ6MTMgKzAxMDAsIEFsZXhhbmRydSBFbGlzZWkgd3JvdGU6Cj4gPiBkaWZmIC0tZ2l0IGEvYXJj aC9hcm02NC9ib290L2R0cy9hcm0vZnZwLWJhc2UtcmV2Yy5kdHMKPiA+IGIvYXJjaC9hcm02NC9i b290L2R0cy9hcm0vZnZwLWJhc2UtcmV2Yy5kdHMKPiA+IGluZGV4IDYwNDcyZDY1YTM1NS4uYmQw NTAzNzNkNmNmIDEwMDY0NAo+ID4gLS0tIGEvYXJjaC9hcm02NC9ib290L2R0cy9hcm0vZnZwLWJh c2UtcmV2Yy5kdHMKPiA+ICsrKyBiL2FyY2gvYXJtNjQvYm9vdC9kdHMvYXJtL2Z2cC1iYXNlLXJl dmMuZHRzCj4gPiBAQCAtMTY1LDEwICsxNjUsMjggQEAgQzFfTDI6IGwyLWNhY2hlMSB7Cj4gPiAg ICAgICAgICAgICAgICAgfTsKPiA+ICAgICAgICAgfTsKPiA+ICAKPiA+IC0gICAgICAgbWVtb3J5 QDgwMDAwMDAwIHsKPiA+ICsgICAgICAgbWVtb3J5MDogbWVtb3J5QDgwMDAwMDAwIHsKPiA+ICAg ICAgICAgICAgICAgICBkZXZpY2VfdHlwZSA9ICJtZW1vcnkiOwo+ID4gLSAgICAgICAgICAgICAg IHJlZyA9IDwweDAwMDAwMDAwIDB4ODAwMDAwMDAgMCAweDgwMDAwMDAwPiwKPiA+IC0gICAgICAg ICAgICAgICAgICAgICA8MHgwMDAwMDAwOCAweDgwMDAwMDAwIDAgMHg4MDAwMDAwMD47Cj4gPiAr ICAgICAgICAgICAgICAgcmVnID0gPDB4MDAgMHg4MDAwMDAwMCAweDAwIDB4N2MwMDAwMDA+Owo+ ID4gKyAgICAgICB9Owo+ID4gKwo+ID4gKyAgICAgICBtZXRhZGF0YTA6IG1ldGFkYXRhQGMwMDAw MDAwICB7Cj4gPiArICAgICAgICAgICAgICAgY29tcGF0aWJsZSA9ICJhcm0sbXRlLXRhZy1zdG9y YWdlIjsKPiA+ICsgICAgICAgICAgICAgICByZWcgPSA8MHgwMCAweGZjMDAwMDAwIDB4MDAgMHgz ZTAwMDAwPjsKPiA+ICsgICAgICAgICAgICAgICBibG9jay1zaXplID0gPDB4MTAwMD47Cj4gPiAr ICAgICAgICAgICAgICAgbWVtb3J5ID0gPCZtZW1vcnkwPjsKPiA+ICsgICAgICAgfTsKPiA+ICsK PiA+ICsgICAgICAgbWVtb3J5MTogbWVtb3J5QDg4MDAwMDAwMCB7Cj4gPiArICAgICAgICAgICAg ICAgZGV2aWNlX3R5cGUgPSAibWVtb3J5IjsKPiA+ICsgICAgICAgICAgICAgICByZWcgPSA8MHgw OCAweDgwMDAwMDAwIDB4MDAgMHg3YzAwMDAwMD47Cj4gPiArICAgICAgIH07Cj4gPiArCj4gPiAr ICAgICAgIG1ldGFkYXRhMTogbWV0YWRhdGFAOGMwMDAwMDAwICB7Cj4gPiArICAgICAgICAgICAg ICAgY29tcGF0aWJsZSA9ICJhcm0sbXRlLXRhZy1zdG9yYWdlIjsKPiA+ICsgICAgICAgICAgICAg ICByZWcgPSA8MHgwOCAweGZjMDAwMDAwIDB4MDAgMHgzZTAwMDAwPjsKPiA+ICsgICAgICAgICAg ICAgICBibG9jay1zaXplID0gPDB4MTAwMD47Cj4gPiArICAgICAgICAgICAgICAgbWVtb3J5ID0g PCZtZW1vcnkxPjsKPiA+ICAgICAgICAgfTsKPiA+ICAKPiAKPiBBRkFJSywgdGhlIGFib3ZlIG1l bW9yeSBjb25maWd1cmF0aW9uIG1lYW5zIHRoYXQgdGhlcmUgYXJlIHR3byByZWdpb24KPiBvZiBk cmFtKDB4ODAwMDAwMDAtMHhmYzAwMDAwMCBhbmQgMHg4XzgwMDAwMDAwLTB4OF9mYzAwMDAwMDAp IGFuZCB0aGlzCj4gaXMgY2FsbGVkIFBERCBtZW1vcnkgbWFwLgo+IAo+IERvY3VtZW50WzFdIHNh aWQgdGhlcmUgYXJlIHNvbWUgY29uc3RyYWludHMgb2YgdGFnIG1lbW9yeSBhcyBiZWxvdy4KPiAK PiB8IFRoZSBmb2xsb3dpbmcgY29uc3RyYWludHMgYXBwbHkgdG8gdGhlIHRhZyByZWdpb25zIGlu IERSQU06Cj4gfCAxLiBUaGUgdGFnIHJlZ2lvbiBjYW5ub3QgYmUgaW50ZXJsZWF2ZWQgd2l0aCB0 aGUgZGF0YSByZWdpb24uCj4gfCBUaGUgdGFnIHJlZ2lvbiBtdXN0IGFsc28gYmUgYWJvdmUgdGhl IGRhdGEgcmVnaW9uIHdpdGhpbiBEUkFNLgo+IHwKPiB8IDIuVGhlIHRhZyByZWdpb24gaW4gdGhl IHBoeXNpY2FsIGFkZHJlc3Mgc3BhY2UgY2Fubm90IHN0cmFkZGxlCj4gfCBtdWx0aXBsZSByZWdp b25zIG9mIGEgbWVtb3J5IG1hcC4KPiB8Cj4gfCBQREQgbWVtb3J5IG1hcCBpcyBub3QgYWxsb3dl ZCB0byBoYXZlIHBhcnQgb2YgdGhlIHRhZyByZWdpb24gYmV0d2Vlbgo+IHwgMkdCLTRHQiBhbmQg YW5vdGhlciBwYXJ0IGJldHdlZW4gMzRHQi02NEdCLgo+IAo+IEknbSBub3Qgc3VyZSBpZiB3ZSBj YW4gc2VwYXJhdGUgdGFnIG1lbW9yeSB3aXRoIHRoZSBhYm92ZQo+IGNvbmZpZ3VyYXRpb24uIE9y IGRvIEkgbWlzcyBzb21ldGhpbmc/Cj4gCj4gWzFdIGh0dHBzOi8vZGV2ZWxvcGVyLmFybS5jb20v ZG9jdW1lbnRhdGlvbi8xMDE1NjkvMDMwMC8/bGFuZz1lbgo+IChTZWN0aW9uIDUuNC42LjEpCgpH b29kIHBvaW50LCB0aGFua3MuIFRoZSBhYm92ZSBkdHMgc29tZSByYW5kb20gbGF5b3V0IHdlIHBp Y2tlZCBhcyBhbgpleGFtcGxlLCBpdCBkb2Vzbid0IG1hdGNoIGFueSByZWFsIGhhcmR3YXJlIGFu ZCB3ZSBkaWRuJ3QgcGF5IGF0dGVudGlvbgp0byB0aGUgaW50ZXJjb25uZWN0IGxpbWl0YXRpb25z ICh3ZSBmYWtlIHRoZSB0YWcgc3RvcmFnZSBvbiB0aGUgbW9kZWwpLgoKSSdsbCB0cnkgdG8gZGln IG91dCBob3cgdGhlIG10dV90YWdfYWRkcl9zaHV0dGVyIHJlZ2lzdGVycyB3b3JrIGFuZCBob3cK dGhlIHNwYXJzZSBEUkFNIHNwYWNlIGlzIGNvbXByZXNzZWQgdG8gYSBzbWFsbGVyIHRhZyByYW5n ZS4gQnV0IHRoYXQncwpzb21ldGhpbmcgZG9uZSBieSBmaXJtd2FyZSBhbmQgdGhlIGtlcm5lbCBv bmx5IGxlYXJucyB0aGUgdGFnIHN0b3JhZ2UKbG9jYXRpb24gZnJvbSB0aGUgRFQgKHByb3ZpZGVk IGJ5IGZpcm13YXJlKS4gV2UgYWxzbyBkb24ndCBuZWVkIHRvIGtub3cKdGhlIGZpbmUtZ3JhaW5l ZCBtYXBwaW5nIGJldHdlZW4gMzIgYnl0ZXMgb2YgZGF0YSBhbmQgMSBieXRlICgyIHRhZ3MpIGlu CnRoZSB0YWcgc3RvcmFnZSwgb25seSB0aGUgYmxvY2sgc2l6ZSBpbiB0aGUgdGFnIHN0b3JhZ2Ug c3BhY2UgdGhhdApjb3ZlcnMgYWxsIGludGVybGVhdmluZyBkb25lIGJ5IHRoZSBpbnRlcmNvbm5l Y3QgKGl0IGNhbiBiZSBmcm9tIDEgYnl0ZQp0byBzb21ldGhpbmcgbGFyZ2VyIGxpa2UgYSBwYWdl OyB0aGUga2VybmVsIHdpbGwgdGhlbiB1c2UgdGhlIGxvd2VzdApjb21tb24gbXVsdGlwbGUgYmV0 d2VlbiBhIHBhZ2Ugc2l6ZSBhbmQgdGhpcyB0YWcgYmxvY2sgc2l6ZSB0byBmaWd1cmUKb3V0IGhv dyBtYW55IHBhZ2VzIHRvIHJlc2VydmUpLgoKLS0gCkNhdGFsaW4KCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBs aXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5m cmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK