From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Subject: Re: [PATCH] arm64/mm: Introduce a variable to hold base address of linear region References: <3a05cd0e-466e-4fb6-a78a-4b363e21aaab@arm.com> <92ff5220-f863-4edc-bc9f-bd802d2efa9c@arm.com> <20180619085541.GB13984@arm.com> <6860c284f1c74faa95edd6cf866ec80d@HXTBJIDCEMVIW02.hxtcorp.net> <20180619094045.GD13984@arm.com> <09260c7e-8b9d-bc3c-5bca-0fd75417f552@arm.com> From: James Morse Message-ID: Date: Tue, 19 Jun 2018 12:26:09 +0100 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Bhupesh Sharma Cc: Mark Rutland , "Jin, Yanjiang" , Ard Biesheuvel , Catalin Marinas , Will Deacon , AKASHI Takahiro , Bhupesh SHARMA , Kexec Mailing List , linux-arm-kernel SGkgQmh1cGVzaCwKCk9uIDE5LzA2LzE4IDExOjM3LCBCaHVwZXNoIFNoYXJtYSB3cm90ZToKPiBP biBUdWUsIEp1biAxOSwgMjAxOCBhdCAzOjQ2IFBNLCBKYW1lcyBNb3JzZSA8amFtZXMubW9yc2VA YXJtLmNvbT4gd3JvdGU6Cj4+IE9uIDE5LzA2LzE4IDEwOjU3LCBKaW4sIFlhbmppYW5nIHdyb3Rl Ogo+Pj4+IC0tLS0tT3JpZ2luYWwgTWVzc2FnZS0tLS0tCj4+Pj4gRnJvbTogV2lsbCBEZWFjb24g W21haWx0bzp3aWxsLmRlYWNvbkBhcm0uY29tXQo+Pj4+IFNlbnQ6IDIwMTjlubQ25pyIMTnml6Ug MTc6NDEKPj4+PiBUbzogSmluLCBZYW5qaWFuZyA8eWFuamlhbmcuamluQGh4dC1zZW1pdGVjaC5j b20+Cj4+Pj4gQ2M6IEphbWVzIE1vcnNlIDxqYW1lcy5tb3JzZUBhcm0uY29tPjsgQmh1cGVzaCBT aGFybWEKPj4+PiA8YmhzaGFybWFAcmVkaGF0LmNvbT47IE1hcmsgUnV0bGFuZCA8bWFyay5ydXRs YW5kQGFybS5jb20+OyBBcmQKPj4+PiBCaWVzaGV1dmVsIDxhcmQuYmllc2hldXZlbEBsaW5hcm8u b3JnPjsgQ2F0YWxpbiBNYXJpbmFzCj4+Pj4gPGNhdGFsaW4ubWFyaW5hc0Bhcm0uY29tPjsgS2V4 ZWMgTWFpbGluZyBMaXN0IDxrZXhlY0BsaXN0cy5pbmZyYWRlYWQub3JnPjsKPj4+PiBBS0FTSEkg VGFrYWhpcm8gPHRha2FoaXJvLmFrYXNoaUBsaW5hcm8ub3JnPjsgQmh1cGVzaCBTSEFSTUEKPj4+ PiA8Ymh1cGVzaC5saW51eEBnbWFpbC5jb20+OyBsaW51eC1hcm0ta2VybmVsIDxsaW51eC1hcm0t Cj4+Pj4ga2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmc+Cj4+Pj4gU3ViamVjdDogUmU6IFtQQVRD SF0gYXJtNjQvbW06IEludHJvZHVjZSBhIHZhcmlhYmxlIHRvIGhvbGQgYmFzZSBhZGRyZXNzIG9m Cj4+Pj4gbGluZWFyIHJlZ2lvbgoKPj4+Pj4+PiBJdCBpcyBoYXJkIHRvIGtub3cgYWxsIGFib3Zl IGluIGtleGVjLXRvb2xzIG5vdy4gT3JpZ2luYWxseSBJCj4+Pj4+Pj4gcGxhbm5lZCB0byByZWFk IG1lbXN0YXJ0X2FkZHIncyB2YWx1ZSBmcm9tICIvZGV2L21lbSIsIGJ1dCBzb21lb25lCj4+Pj4+ Pj4gdGhvdWdodCBub3QgYWxsIEtlcm5lbHMgZW5hYmxlICIvZGV2L21lbSIsIHdlJ2QgYmV0dGVy IGZpbmQgYSBtb3JlCj4+Pj4+Pj4gZ2VuZXJpYyBhcHByb2FjaC4gU28gd2Ugd2FudCB0byBnZXQg c29tZSBzdWdnZXN0aW9ucyBmcm9tIEFSTSBrZXJuZWwKPj4+PiBjb21tdW5pdHkuCj4+Pj4+Pj4g Q2FuIHdlIGV4cG9ydCB0aGlzIHZhcmlhYmxlIGluIEtlcm5lbCBzaWRlIHRocm91Z2ggc3lzY29u ZigpIG9yCj4+Pj4+Pj4gb3RoZXIgc2ltaWxhciBtZXRob2RzPyBPciBzb21lb25lIGNhbiBwcm92 aWRlIGFuIGVmZmVjdCB3YXkgdG8gZ2V0Cj4+Pj4+Pj4gbWVtc3RhcnRfYWRkcidzIHZhbHVlPwo+ Pj4+Pj4KPj4+Pj4+IEkgdGhvdWdodCB0aGUgc3VnZ2VzdGlvbiBmcm9tIEphbWVzIHdhcyB0byBl eHBvc2UgdGhpcyB2aWEgYW4gRUxGCj4+Pj4+PiBOT1RFIGluIGtjb3JlIGFuZCB2bWNvcmUgKG9y IGluIHRoZSBoZWFkZXIgZGlyZWN0bHkgaWYgdGhhdCdzIHBvc3NpYmxlLCBidXQgSSdtCj4+Pj4g bm90IHN1cmUgYWJvdXQgaXQpPwo+Pj4+Pgo+Pj4+PiBUaGFua3MgZm9yIHlvdXIgcmVwbHkgZmly c3RseS4gQnV0IHNhbWUgYXMgREVWTUVNLCBrY29yZSBpcyBub3QgYQo+Pj4+PiBtdXN0LWhhdmUs IHNvIHdlIGNhbid0IGRlcGVuZCBvbiBpdC4KPj4+Pgo+Pj4+IE5laXRoZXIgaXMgS0VYRUMuIFdl IGNhbiBzZWxlY3QgUFJPQ19LQ09SRSBmcm9tIEtFWEVDIGlmIGl0IGhlbHBzLgo+Pj4+Cj4+Pj4+ IE9uIHRoZSBvdGhlciBoYW5kLCBwaHlzX3RvX3ZpcnQoKSBpcyBjYWxsZWQgZHVyaW5nIGdlbmVy YXRpbmcgdm1jb3JlCj4+Pj4+IGluIEtleGVjLXRvb2xzLCB2bWNvcmUgYWxzbyBjYW4ndCBoZWxw IHRoaXMgaXNzdWUuCj4+Pj4KPj4+PiBJIGRvbid0IHVuZGVyc3RhbmQgdGhpcyBwYXJ0LiBJZiB5 b3UgaGF2ZSB0aGUgdm1jb3JlIGluIHlvdXIgaGFuZCwgd2h5IGNhbid0IHlvdQo+Pj4+IGdyb2sg dGhlIHB2IG9mZnNldCBmcm9tIHRoZSBub3RlIGFuZCB1c2UgdGhhdCBpbiBwaHlzX3RvX3ZpcnQo KT8KPj4+Cj4+PiBJdCBpcyBhIGNoaWNrZW4tYW5kLWVnZyBpc3N1ZS4KPj4+IHBoeXNfdG8gdmly dCgpIGlzIGZvciBjcmFzaGR1bXAgc2V0dXAuIFRvIGdlbmVyYXRlIHZtY29yZSwgd2UgbXVzdCBj YWxsCj4+PiBwaHlzX3RvX3ZpcnQoKS4gQXQgdGhpcyBwb2ludCwgbm8gdm1jb3JlIGV4aXN0cy4K Pj4KPj4gSXRzIG5lZWRlZCBmb3IgdGhlIHBhcnRzIG9mIHRoZSBFTEYgaGVhZGVyIHRoYXQga2V4 ZWMtdG9vbHMgZ2VuZXJhdGVzIGF0IGtkdW1wCj4+IGxvYWQgdGltZT8KPj4KPj4gU28gYWRkaW5n IHRoaXMgcHZfb2Zmc2V0IHRvIHRoZSBrZXk9dmFsdWUgZGF0YSBjcmFzaF9zYXZlX3ZtY29yZWlu Zm9faW5pdCgpCj4+IHNhdmVzIGlzbid0IGF2YWlsYWJsZSBlYXJseSBlbm91Z2g/Cgo+IFllcywg b25lIGNhc2Ugd2hlcmUgaXQgaXMgbm90IGFjdHVhbGx5IGF2YWlsYWJsZSBlYXJseSBlbm91Z2gg Zm9yCj4gbWFrZWR1bXBmaWxlIHVzYWdlIGlzIGlmIHdlIGFyZSBkZXRlcm1pbmluZyB0aGUgUFRf Tk9URSBjb250ZW50cyBmcm9tCj4gdGhlICcvcHJvYy9rY29yZScgb24gYSAnbGl2ZScgc3lzdGVt Cgo+IGludCBzZXRfa2NvcmVfdm1jb3JlaW5mbyh1aW50NjRfdCB2bWNvcmVpbmZvX2FkZHIsIHVp bnQ2NF90IHZtY29yZWluZm9fbGVuKQo+IAo+IHsKPiAKPiA8c25pcC4uPgo+IGt2YWRkciA9ICh1 bG9uZyl2bWNvcmVpbmZvX2FkZHIgKyBQQUdFX09GRlNFVDsKPiAKPiB9CgpZb3UgYXJlIHRyeWlu ZyB0byByZWFkIHRoZSB2bWNvcmVpbmZvIHRocm91Z2ggL3Byb2Mva2NvcmUgZ2l2ZW4ga25vd2xl ZGdlIG9mIGl0cwpwaHlzaWNhbCBhZGRyZXNzLgoKSSdtIHN1Z2dlc3RpbmcgYWRkaW5nIHRoZSBj b250ZW50cyBvZiB2bWNvcmVpbmZvIGFzIGEgUFRfTk9URSBzZWN0aW9uIG9mCi9wcm9jL2tjb3Jl J3MgRUxGIGhlYWRlci4gTm8gc3BlY2lhbCBrbm93bGVkZ2UgbmVjZXNzYXJ5LCBhbnkgZWxmLXBh cnNlciBzaG91bGQKYmUgYWJsZSB0byBkdW1wIHRoZSB2YWx1ZXMuCgoKPiBOb3cgdGhlIHByb2Js ZW0gYXQgaGFuZCBpcyB0byBkZXRlcm1pbmUgdGhlIG9mZnNldCBhdCB3aGljaCB0aGUKPiBwdl9v ZmZzZXQgKGtleT12YWx1ZSBkYXRhIHBhaXIpIGxpZXMgaW4gdGhlICcvcHJvYy9rY29yZScgKEkg YXNzdW1lCj4gdGhhdCB3aGVuIHlvdSBtZW50aW9uZWQgYWJvdmUgYW5kIGVhcmxpZXIgYWJvdXQg YWRkaW5nIHRoaXMgcGFpciB0bwo+IHRoZSBlbGZub3RlcyB5b3UgbWVhbnQgYm90aCB0aGUgdm1j b3JlaW5mbyBhbmQgJ3Byb2Mva2NvcmUnKSwgYXMgd2UKPiBjYW4gaGF2ZSAnbicgbnVtYmVyIG9m IFBUX0xPQUQgc2VnbWVudHMuCgpJdCBsb29rcyBsaWtlIHRoZXJlIGlzIGFscmVhZHkgYSBOT1RF IHNlY3Rpb24gd2l0aCBjb3JlIGluZm8gaW4gdGhlcmU6CnwgIyByZWFkZWxmIC1sIC9wcm9jL2tj b3JlCnwKfCBFbGYgZmlsZSB0eXBlIGlzIENPUkUgKENvcmUgZmlsZSkKfCBFbnRyeSBwb2ludCAw eDAKfCBUaGVyZSBhcmUgMTYgcHJvZ3JhbSBoZWFkZXJzLCBzdGFydGluZyBhdCBvZmZzZXQgNjQK fAp8IFByb2dyYW0gSGVhZGVyczoKfCAgVHlwZSAgICAgICAgICAgT2Zmc2V0ICAgICAgICAgICAg IFZpcnRBZGRyICAgICAgICAgICBQaHlzQWRkcgp8ICAgICAgICAgICAgICAgICBGaWxlU2l6ICAg ICAgICAgICAgTWVtU2l6ICAgICAgICAgICAgICBGbGFncyAgQWxpZ24KfCAgIE5PVEUgICAgICAg ICAgIDB4MDAwMDAwMDAwMDAwMDNjMCAweDAwMDAwMDAwMDAwMDAwMDAgMHgwMDAwMDAwMDAwMDAw MDAwCnwgICAgICAgICAgICAgICAgICAweDAwMDAwMDAwMDAwMDExMTQgMHgwMDAwMDAwMDAwMDAw MDAwICAgICAgICAgMHgwCgpJIGFzc3VtZSB3ZSBjYW4gYWRkIG1vcmUgbm90ZXMgd2l0aG91dCBi cmVha2luZyB0aGUgZXhpc3RpbmcgdXNlci4uLgoKKGFuZCBpdCBsb29rcyBsaWtlIHRoZXJlIGFy ZSBzb21lIGJyb2tlbiBfX3BhKGtlcm5lbCBzeW1ib2wpIHVzZXJzIGluIHRoZXJlLgoKClRoYW5r cywKCkphbWVzCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f XwprZXhlYyBtYWlsaW5nIGxpc3QKa2V4ZWNAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlz dHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2tleGVjCg==