From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabien DESSENNE Subject: Re: [PATCH 0/6] hwspinlock: allow sharing of hwspinlocks Date: Wed, 7 Aug 2019 08:39:20 +0000 Message-ID: <02329102-5571-c6c1-b78c-693747133f0e@st.com> References: <1552492237-28810-1-git-send-email-fabien.dessenne@st.com> <20190801191403.GA7234@tuxbook-pro> <1a057176-81ab-e302-4375-2717ceef6924@st.com> <20190805174659.GA23928@tuxbook-pro> <20190806182128.GD26807@tuxbook-pro> <1aea3d28-29dc-f9de-3b86-cf777e0d5caa@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1aea3d28-29dc-f9de-3b86-cf777e0d5caa@ti.com> Content-Language: en-US Content-ID: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Suman Anna , Bjorn Andersson Cc: Ohad Ben-Cohen , Mark Rutland , Alexandre TORGUE , Jonathan Corbet , "linux-doc@vger.kernel.org" , "linux-remoteproc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" , Rob Herring , Maxime Coquelin , "linux-stm32@st-md-mailman.stormreply.com" , "linux-arm-kernel@lists.infradead.org" , Benjamin GAIGNARD List-Id: devicetree@vger.kernel.org SGkNCg0KDQpPbiAwNi8wOC8yMDE5IDExOjMwIFBNLCBTdW1hbiBBbm5hIHdyb3RlOg0KPiBPbiA4 LzYvMTkgMToyMSBQTSwgQmpvcm4gQW5kZXJzc29uIHdyb3RlOg0KPj4gT24gVHVlIDA2IEF1ZyAx MDozOCBQRFQgMjAxOSwgU3VtYW4gQW5uYSB3cm90ZToNCj4+DQo+Pj4gSGkgRmFiaWVuLA0KPj4+ DQo+Pj4gT24gOC81LzE5IDEyOjQ2IFBNLCBCam9ybiBBbmRlcnNzb24gd3JvdGU6DQo+Pj4+IE9u IE1vbiAwNSBBdWcgMDE6NDggUERUIDIwMTksIEZhYmllbiBERVNTRU5ORSB3cm90ZToNCj4+Pj4N Cj4+Pj4+IE9uIDAxLzA4LzIwMTkgOToxNCBQTSwgQmpvcm4gQW5kZXJzc29uIHdyb3RlOg0KPj4+ Pj4+IE9uIFdlZCAxMyBNYXIgMDg6NTAgUERUIDIwMTksIEZhYmllbiBEZXNzZW5uZSB3cm90ZToN Cj4+IFsuLl0NCj4+Pj4+IEIvIFRoaXMgd291bGQgaW50cm9kdWNlIHNvbWUgaW5jb25zaXN0ZW5j eSBiZXR3ZWVuIHRoZSB0d28gJ3JlcXVlc3QnIEFQSQ0KPj4+Pj4gd2hpY2ggYXJlIGh3c3Bpbl9s b2NrX3JlcXVlc3QoKSBhbmQgaHdzcGluX2xvY2tfcmVxdWVzdF9zcGVjaWZpYygpLg0KPj4+Pj4g aHdzcGluX2xvY2tfcmVxdWVzdCgpIGxvb2tzIGZvciBhbiB1bnVzZWQgbG9jaywgc28gcmVxdWVz dHMgZm9yIGFuIGV4Y2x1c2l2ZQ0KPj4+Pj4gdXNhZ2UuIE9uIHRoZSBvdGhlciBzaWRlLCByZXF1 ZXN0X3NwZWNpZmljKCkgd291bGQgcmVxdWVzdCBzaGFyZWQgbG9ja3MuDQo+Pj4+PiBXb3JzdCB0 aGUgZm9sbG93aW5nIHNlcXVlbmNlIGNhbiB0cmFuc2Zvcm0gYW4gZXhjbHVzaXZlIHVzYWdlIGlu dG8gYSBzaGFyZWQNCj4+Pj4+DQo+Pj4+IFRoZXJlIGlzIGFscmVhZHkgYW4gaW5jb25zaXN0ZW5j eSBpbiBiZXR3ZWVuIHRoZXNlOyBhcyB3aXRoIGFib3ZlIGFueQ0KPj4+PiBzeXN0ZW0gdGhhdCB1 c2VzIGJvdGggcmVxdWVzdCgpIGFuZCByZXF1ZXN0X3NwZWNpZmljKCkgd2lsbCBiZSBzdWZmZXJp bmcNCj4+Pj4gZnJvbSBpbnRlcm1pdHRlbnQgZmFpbHVyZXMgZHVlIHRvIHByb2JlIG9yZGVyaW5n Lg0KPj4+Pg0KPj4+Pj4gb25lOg0KPj4+Pj4gICDCoCAtaHdzcGluX2xvY2tfcmVxdWVzdCgpIC0+ IHJldHVybnMgSWQjMCAoZXhjbHVzaXZlKQ0KPj4+Pj4gICDCoCAtaHdzcGluX2xvY2tfcmVxdWVz dCgpIC0+IHJldHVybnMgSWQjMSAoZXhjbHVzaXZlKQ0KPj4+Pj4gICDCoCAtaHdzcGluX2xvY2tf cmVxdWVzdF9zcGVjaWZpYygwKSAtPiByZXR1cm5zIElkIzAgYW5kIG1ha2VzIElkIzAgc2hhcmVk DQo+Pj4+PiBIb25lc3RseSBJIGFtIG5vdCBzdXJlIHRoYXQgdGhpcyBpcyBhIHJlYWwgaXNzdWUs IGJ1dCBpdCdzIGJldHRlciB0byBoYXZlIGl0DQo+Pj4+PiBpbiBtaW5kIGJlZm9yZSB3ZSB0YWtl IGF5IGRlY2lzaW9uDQo+Pj4gV291bGRuJ3QgaXQgYmUgYWN0dWFsbHkgc2ltcGxlciB0byBqdXN0 IGludHJvZHVjZSBhIG5ldyBzcGVjaWZpYyBBUEkNCj4+PiB2YXJpYW50IGZvciB0aGlzLCBzaW1p bGFyIHRvIHRoZSByZXNldCBjb3JlIGZvciBleGFtcGxlIChpdCB1c2VzIGENCj4+PiBzZXBhcmF0 ZSBleGNsdXNpdmUgQVBJKSwgd2l0aG91dCBoYXZpbmcgdG8gbW9kaWZ5IHRoZSBiaW5kaW5ncyBh dCBhbGwuDQo+Pj4gSXQgaXMganVzdCBhIGNhc2Ugb2YgeW91ciBkcml2ZXIgdXNpbmcgdGhlIHJp Z2h0IEFQSSwgYW5kIHRoZSBjb3JlIGNhbg0KPj4+IGJlIG1vZGlmaWVkIHRvIHVzZSB0aGUgYWRk aXRpb25hbCB0YWcgc2VtYW50aWNzIGJhc2VkIG9uIHRoZSBBUEkuIEl0DQo+Pj4gc2hvdWxkIGF2 b2lkIGFueSBjb25mdXNpb24gd2l0aCBzYXkgdXNpbmcgYSBkaWZmZXJlbnQgc2Vjb25kIGNlbGwg dmFsdWUNCj4+PiBmb3IgdGhlIHNhbWUgbG9jayBpbiB0d28gZGlmZmVyZW50IG5vZGVzLg0KPj4+ DQo+PiBCdXQgdGhpcyBpbXBsaWVzIHRoYXQgdGhlcmUgaXMgYW4gYWN0dWFsIG5lZWQgdG8gaG9s ZCB0aGVzZSBsb2Nrcw0KPj4gZXhjbHVzaXZlbHkuIEdpdmVuIHRoYXQgdGhleSBhcmUgKGV4Y2Vw dCBmb3IgdGhlIHJhdyBjYXNlKSBhbGwgd3JhcHBlZA0KPj4gYnkgTGludXggbG9ja2luZyBwcmlt aXRpdmVzIHRoZXJlIHNob3VsZG4ndCBiZSBhIHByb2JsZW0gc2hhcmluZyBhIGxvY2sNCj4+IChl eGNlcHQgcG9zc2libHkgZm9yIHRoZSByYXcgY2FzZSkuDQo+IFllcyBhZ3JlZWQsIHRoZSBIV0xP Q0tfUkFXIGFuZCBIV0xPQ0tfSU5fQVRPTUlDIGNhc2VzIGFyZSB1bnByb3RlY3RlZC4gSQ0KPiBh bSBzdGlsbCB0cnlpbmcgdG8gdW5kZXJzdGFuZCBiZXR0ZXIgdGhlIHVzZWNhc2UgdG8gc2VlIGlm IHRoZSBzYW1lIGxvY2sNCj4gaXMgYmVpbmcgbXVsdGlwbGV4ZWQgZm9yIGRpZmZlcmVudCBwcm90 ZWN0aW9uIGNvbnRleHRzLCBvciBpZiBhbGwgb2YNCj4gdGhlbSBhcmUgcHJvdGVjdGluZyB0aGUg c2FtZSBjb250ZXh0Lg0KDQoNCkhlcmUgYXJlIHR3byBkaWZmZXJlbnQgZXhhbXBsZXMgdGhhdCBl eHBsYWluIHRoZSBuZWVkIGZvciBjaGFuZ2VzLg0KSW4gYm90aCBjYXNlcyB0aGUgTGludXggY2xp ZW50cyBhcmUgdGFsa2luZyB0byBhIHNpbmdsZSBlbnRpdHkgb24gdGhlDQpyZW1vdGUtc2lkZS4N Cg0KRXhhbXBsZSAxOg0KIMKgwqDCoCBleHRpOiBpbnRlcnJ1cHQtY29udHJvbGxlckA1MDAwZDAw MCB7DQogwqDCoMKgIMKgwqDCoCBjb21wYXRpYmxlID0gInN0LHN0bTMybXAxLWV4dGkiLCAic3lz Y29uIjsNCiDCoMKgwqAgwqDCoMKgIGludGVycnVwdC1jb250cm9sbGVyOw0KIMKgwqDCoCDCoMKg wqAgI2ludGVycnVwdC1jZWxscyA9IDwyPjsNCiDCoMKgwqAgwqDCoMKgIHJlZyA9IDwweDUwMDBk MDAwIDB4NDAwPjsNCiDCoMKgwqAgwqDCoMKgIGh3bG9ja3MgPSA8JmhzZW0gMT47DQogwqDCoMKg IH07DQpUaGUgdHdvIGRyaXZlcnMgKHN0bTMybXAxLWV4dGkgYW5kIHN5c2NvbikgcmVmZXIgdG8g dGhlIHNhbWUgaHdsb2NrLg0KV2l0aCB0aGUgY3VycmVudCBod3NwaW5sb2NrIGltcGxlbWVudGF0 aW9uLCBvbmx5IHRoZSBmaXJzdCBkcml2ZXIgc3VjY2VlZHMNCmluIHJlcXVlc3RpbmcgKGh3c3Bp bl9sb2NrX3JlcXVlc3Rfc3BlY2lmaWMpIHRoZSBod2xvY2suIFRoZSBzZWNvbmQgcmVxdWVzdA0K ZmFpbHMuDQpIZXJlLCB3ZSByZWFsbHkgbmVlZCB0byBzaGFyZSB0aGUgaHdsb2NrIGJldHdlZW4g dGhlIHR3byBkcml2ZXJzLg0KTm90ZTogaGFyZHdhcmUgc3BpbmxvY2sgc3VwcG9ydCBmb3IgcmVn bWFwIHdhcyAncmVjZW50bHknIGludHJvZHVjZWQgaW4gNC4xNQ0Kc2VlIGh0dHBzOi8vbG9yZS5r ZXJuZWwub3JnL3BhdGNod29yay9wYXRjaC84NDU5NDEvDQoNCg0KDQpFeGFtcGxlIDI6DQpIZXJl IGl0IGlzIG1vcmUgYSBxdWVzdGlvbiBvZiBvcHRpbWl6YXRpb24gOiB3ZSB3YW50IHRvIHNhdmUg dGhlIG51bWJlciBvZg0KaHdsb2NrcyB1c2VkIHRvIHByb3RlY3QgcmVzb3VyY2VzLCB1c2luZyBh biB1bmlxdWUgaHdsb2NrIHRvIHByb3RlY3QgYWxsDQpwaW5jdHJsIHJlc291cmNlczoNCiDCoMKg wqAgwqDCoMKgIHBpbmN0cmw6IHBpbi1jb250cm9sbGVyQDUwMDAyMDAwIHsNCiDCoMKgwqAgwqDC oMKgIMKgwqDCoCBjb21wYXRpYmxlID0gInN0LHN0bTMybXAxNTctcGluY3RybCI7DQogwqDCoMKg IMKgwqDCoCDCoMKgwqAgcmFuZ2VzID0gPDAgMHg1MDAwMjAwMCAweGE0MDA+Ow0KIMKgwqDCoCDC oMKgwqAgwqDCoMKgIGh3bG9ja3MgPSA8JmhzZW0gMCAxPjsNCg0KIMKgwqDCoCDCoMKgwqAgcGlu Y3RybF96OiBwaW4tY29udHJvbGxlci16QDU0MDA0MDAwIHsNCiDCoMKgwqAgwqDCoMKgIMKgwqDC oCBjb21wYXRpYmxlID0gInN0LHN0bTMybXAxNTctei1waW5jdHJsIjsNCiDCoMKgwqAgwqDCoMKg IMKgwqDCoCByYW5nZXMgPSA8MCAweDU0MDA0MDAwIDB4NDAwPjsNCiDCoMKgwqAgwqDCoMKgIMKg wqDCoCBwaW5zLWFyZS1udW1iZXJlZDsNCiDCoMKgwqAgwqDCoMKgIMKgwqDCoCBod2xvY2tzID0g PCZoc2VtIDAgMT47DQoNCj4NCj4+IEkgYWdyZWUgdGhhdCB3ZSBzaG91bGRuJ3Qgc3BlY2lmeSB0 aGlzIHByb3BlcnR5IGluIERUIC0gaWYgYW55dGhpbmcgaXQNCj4+IHNob3VsZCBiZSBhIHZhcmlh bnQgb2YgdGhlIEFQSS4NCg0KDQpJZiB3ZSBkZWNpZGUgdG8gYWRkIGEgJ3NoYXJlZCcgQVBJLCB0 aGVuLCB3aGF0IGFib3V0IHRoZSBnZW5lcmljIHJlZ21hcCANCmRyaXZlcj8NCg0KSW4gdGhlIGNv bnRleHQgb2YgYWJvdmUgZXhhbXBsZTEsIHRoaXMgd291bGQgcmVxdWlyZSB0byB1cGRhdGUgdGhl IA0KcmVnbWFwIGRyaXZlci4NCg0KQnV0IHdvdWxkIHRoaXMgYmUgYWNjZXB0YWJsZSBmb3IgYW55 IGRyaXZlciB1c2luZyBzeXNjb24vcmVnbWFwPw0KDQoNCkkgdGhpbmsgaXQgaXMgYmV0dGVyIHRv IGtlZXAgdGhlIGV4aXN0aW5nIEFQSSAobW9kaWZ5aW5nIGl0IHNvIGl0IGFsd2F5cyANCmFsbG93 cw0KDQpod2xvY2tzIHNoYXJpbmcsIHNvIG5vIG5lZWQgZm9yIGJpbmRpbmdzIHVwZGF0ZSkgdGhh biBhZGRpbmcgYW5vdGhlciBBUEkuDQoNCg0KDQo+Pg0KPj4+IElmIHlvdSBhcmUgc2hhcmluZyBh IGh3bG9jayBvbiB0aGUgTGludXggc2lkZSwgc3VyZWx5IHlvdXIgZHJpdmVyIHNob3VsZA0KPj4+ IGJlIGF3YXJlIHRoYXQgaXQgaXMgYSBzaGFyZWQgbG9jay4gVGhlIHRhZyBjYW4gYmUgc2V0IGR1 cmluZyB0aGUgZmlyc3QNCj4+PiByZXF1ZXN0IEFQSSwgYW5kIHlvdSBsb29rIHRocm91Z2ggYm90 aCB0YWdzIHdoZW4gZ2l2aW5nIG91dCBhIGhhbmRsZS4NCj4+Pg0KPj4gV2h5IHdvdWxkIHRoZSBk cml2ZXIgbmVlZCB0byBrbm93IGFib3V0IGl0Pw0KPiBKdXN0IHRoZSBzZW1hbnRpY3MgaWYgd2Ug d2VyZSB0byBzdXBwb3J0IHNpbmdsZSB1c2VyIHZzIG11bHRpcGxlIHVzZXJzDQo+IG9uIExpbnV4 LXNpZGUgdG8gZXZlbiBnZXQgYSBoYW5kbGUuIFlvdXIgcG9pbnQgaXMgdGhhdCB0aGlzIG1heSBi ZSBtb290DQo+IHNpbmNlIHdlIGhhdmUgcHJvdGVjdGlvbiBhbnl3YXkgb3RoZXIgdGhhbiB0aGUg cmF3IGNhc2VzLiBCdXQgd2UgbmVlZCB0bw0KPiBiZSBhYmxlIHRvIGhhdmUgdGhlIHNhbWUgQVBJ IHdvcmsgYWNyb3NzIGFsbCBjYXNlcy4NCj4NCj4gU28gZmFyLCBpdCBoYWQgbW9zdGx5IGJlZW4g dGhhdCB0aGVyZSB3b3VsZCBiZSBvbmUgdXNlciBvbiBMaW51eA0KPiBjb21wZXRpbmcgd2l0aCBv dGhlciBlcXVpdmFsZW50IHBlZXIgZW50aXRpZXMgb24gZGlmZmVyZW50IHByb2Nlc3NvcnMuDQo+ IEl0IGlzIG5vdCBjb21tb24gdG8gaGF2ZSBtdWx0aXBsZSB1c2VycyBzaW5jZSB0aGVzZSBwcm90 ZWN0aW9uIHNjaGVtZXMNCj4gYXJlIHVzdWFsbHkgbmVlZGVkIG9ubHkgYXQgdGhlIGxvd2VzdCBs ZXZlbHMgb2YgYSBzdGFjaywgc28gdGhlDQo+IGV4Y2x1c2l2ZSBoYW5kbGUgc3R1ZmYgaGFkIGJl ZW4gc3VmZmljaWVudC4NCj4NCj4+PiBPYnZpb3VzbHksIHRoZSBod3NwaW5fbG9ja19yZXF1ZXN0 KCkgQVBJIHVzYWdlIHNlbWFudGljcyBhbHdheXMgaGFkIHRoZQ0KPj4+IGltcGxpZWQgYWRkaXRp b25hbCBuZWVkIGZvciBjb21tdW5pY2F0aW5nIHRoZSBsb2NrIGlkIHRvIHRoZSBvdGhlciBwZWVy DQo+Pj4gZW50aXR5LCBzbyBhIHJlYWxpc3RpYyB1c2FnZSBpcyBtb3N0IGFsd2F5cyB0aGUgc3Bl Y2lmaWMgQVBJIHZhcmlhbnQuIEkNCj4+PiBkb3VidCB0aGlzIEFQSSB3b3VsZCBiZSBvZiBtdWNo IHVzZSBmb3IgdGhlIHNoYXJlZCBkcml2ZXIgdXNhZ2UuIFRoaXMNCj4+PiBhbHNvIGltcGxpZXMg dGhhdCB0aGUgY2xpZW50IHVzZXIgZG9lcyBub3QgY2FyZSBhYm91dCBzcGVjaWZ5aW5nIGEgbG9j aw0KPj4+IGluIERULg0KPj4+DQo+PiBBZmFpY3QgaWYgdGhlIGxvY2sgYXJlIHNoYXJlZCB0aGVu IHRoZXJlIHNob3VsZG4ndCBiZSBhIHByb2JsZW0gd2l0aA0KPj4gc29tZSBjbGllbnRzIHVzaW5n IHRoZSByZXF1ZXN0IEFQSSBhbmQgb3RoZXJzIHJlcXVlc3Rfc3BlY2lmaWMoKS4gQXMgYW55DQo+ PiBjb2xsaXNpb25zIHdvdWxkIHNpbXBseSBtZWFuIHRoYXQgdGhlcmUgYXJlIG1vcmUgY29udGVu dGlvbiBvbiB0aGUgbG9jay4NCj4+DQo+PiBXaXRoIHRoZSBjdXJyZW50IGV4Y2x1c2l2ZSBtb2Rl bCB0aGF0IGlzIG5vdCBwb3NzaWJsZSBhbmQgdGhlIHN1Y2Nlc3Mgb2YNCj4+IHRoZSByZXF1ZXN0 X3NwZWNpZmljIHdpbGwgZGVwZW5kIG9uIHByb2JlIG9yZGVyLg0KPj4NCj4+IEJ1dCBwZXJoYXBz IGl0IHNob3VsZCBiZSBleHBsaWNpdGx5IHByb2hpYml0ZWQgdG8gdXNlIGJvdGggQVBJcyBvbiB0 aGUNCj4+IHNhbWUgaHdzcGlubG9jayBpbnN0YW5jZT8NCj4gWWVhaCwgdGhleSBhcmUgbWVhbnQg dG8gYmUgY29tcGxpbWVudGFyeSB1c2FnZSwgdGhvdWdoIEkgZG91YnQgd2Ugd2lsbA0KPiBldmVy IGhhdmUgYW55IHJlYWxpc3RpYyB1c2VycyBmb3IgdGhlIGdlbmVyaWMgQVBJIGlmIHdlIGhhdmVu J3QgaGFkIGENCj4gdXNhZ2Ugc28gZmFyLiBJIGhhZCBwb3N0ZWQgYSBjb25jZXB0IG9mIHJlc2Vy dmVkIGxvY2tzIGxvbmcgYmFjayBbMV0gdG8NCj4ga2VlcCBhd2F5IGNlcnRhaW4gbG9ja3MgZnJv bSB0aGUgZ2VuZXJpYyByZXF1ZXN0b3IsIGJ1dCBkcm9wcGVkIGl0IHNpbmNlDQo+IHdlIGRpZCBu b3QgaGF2ZSBhbiBhY3R1YWwgdXNlLWNhc2UgbmVlZGluZyBpdC4NCj4NCj4gcmVnYXJkcw0KPiBT dW1hbg0KPg0KPiBbMV0gaHR0cHM6Ly9sd24ubmV0L0FydGljbGVzLzYxMTk0NC8KX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBt YWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9s aXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=