From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] xen/arm: introduce vwfi parameter Date: Sun, 19 Feb 2017 21:27:48 +0000 Message-ID: References: <1487286292-29502-1-git-send-email-sstabellini@kernel.org> <1487382463.6732.146.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cfZ8e-0002KC-RZ for xen-devel@lists.xenproject.org; Sun, 19 Feb 2017 21:35:25 +0000 In-Reply-To: <1487382463.6732.146.camel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Dario Faggioli , Stefano Stabellini Cc: edgar.iglesias@xilinx.com, george.dunlap@eu.citrix.com, nd@arm.com, Punit Agrawal , xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org SGkgRGFyaW8sCgpPbiAwMi8xOC8yMDE3IDAxOjQ3IEFNLCBEYXJpbyBGYWdnaW9saSB3cm90ZToK PiBPbiBGcmksIDIwMTctMDItMTcgYXQgMTQ6NTAgLTA4MDAsIFN0ZWZhbm8gU3RhYmVsbGluaSB3 cm90ZToKPj4gT24gRnJpLCAxNyBGZWIgMjAxNywgSnVsaWVuIEdyYWxsIHdyb3RlOgo+Pj4gUGxl YXNlIGV4cGxhaW4gaW4gd2hpY2ggY29udGV4dCB0aGlzIHdpbGwgYmUgYmVuZWZpY2lhbC4gTXkg Z3V0Cj4+PiBmZWVsaW5nIGlzCj4+PiBvbmx5IHdpbGwgbWFrZSBwZXJmb3JtYW5jZSB3b3JzdCBp ZiBhIG11bHRpcGxlIHZDUFUgb2YgdGhlIHNhbWUKPj4+IGd1ZXN0IGlzCj4+PiBydW5uaW5nIG9u IHZDUFUKPj4KPj4gSSBhbSBub3QgYSBzY2hlZHVsZXIgZXhwZXJ0LCBidXQgSSBkb24ndCB0aGlu ayBzby4gTGV0IG1lIGV4cGxhaW4gdGhlCj4+IGRpZmZlcmVuY2U6Cj4+Cj4+IC0gdmNwdV9ibG9j ayBibG9ja3MgYSB2Y3B1IHVudGlsIGFuIGV2ZW50IG9jY3VycywgZm9yIGV4YW1wbGUgdW50aWwK Pj4gaXQKPj4gICByZWNlaXZlcyBhbiBpbnRlcnJ1cHQKPj4KPj4gLSB2Y3B1X3lpZWxkIHN0b3Bz IHRoZSB2Y3B1IGZyb20gcnVubmluZyB1bnRpbCB0aGUgbmV4dCBzY2hlZHVsZXIKPj4gc2xvdAo+ Pgo+IFNvLCB3aGF0IGhhcHBlbnMgd2hlbiB5b3UgeWllbGQsIGRlcGVuZHMgb24gaG93IHlpZWxk IGlzIGltcGxlbWVudGVkIGluCj4gdGhlIHNwZWNpZmljIHNjaGVkdWxlciwgYW5kIHdoYXQgb3Ro ZXIgdmNwdXMgYXJlIHJ1bm5hYmxlIGluIHRoZQo+IHN5c3RlbS4KPgo+IEN1cnJlbnRseSwgbmVp dGhlciBDcmVkaXQxIG5vciBDcmVkaXQyIChhbmQgbm9yIHRoZSBMaW51eCBzY2hlZHVsZXIsCj4g QUZBSUNSKSByZWFsbHkgc3RvcCB0aGUgeWllbGRpbmcgdmNwdXMuIEJyb2FkbHkgc3BlYWtpbmcs IHRoZSBmb2xsb3dpbmcKPiB0d28gc2NlbmFyaW9zIGFyZSBwb3NzaWJsZToKPiAgLSB2Y3B1IEEg eWllbGRzLCBhbmQgdGhlcmUgaXMgb25lIG9yIG1vcmUgcnVubmFibGUgYnV0IG5vdCBhbHJlYWR5 Cj4gICAgcnVubmluZyBvdGhlciB2Y3B1cy4gSW4gdGhpcyBjYXNlLCBBIGlzIGluZGVlZCBkZXNj aGVkdWxlZCBhbmQgcHV0Cj4gICAgYmFjayBpbiBhIHNjaGVkdWxlciBydW5xdWV1ZSBpbiBzdWNo IGEgd2F5IHRoYXQgb25lIG9yIG1vcmUgb2YgdGhlCj4gICAgcnVubmFibGUgYnV0IG5vdCBydW5u aW5nIG90aGVyIHZjcHVzIGhhdmUgYSBjaGFuY2UgdG8gZXhlY3V0ZSwKPiAgICBiZWZvcmUgdGhl IHNjaGVkdWxlciB3b3VsZCBjb25zaWRlciBBIGFnYWluLiBUaGlzIG1heSBiZQo+ICAgIGltcGxl bWVudGVkIGJ5IHB1dHRpbmcgQSBvbiB0aGUgdGFpbCBvZiB0aGUgcnVucXVldWUsIHNvIGFsbCB0 aGUKPiAgICBvdGhlciB2Y3B1cyB3aWxsIGdldCBhIGNoYW5jZSB0byBydW4gKHRoaXMgaXMgYmFz aWNhbGx5IHdoYXQKPiAgICBoYXBwZW5zIGluIENyZWRpdDEsIG1vZHVsbyBwZXJpb2RpYyBydW5x IHNvcnRpbmcpLiBPciBpdCBtYXkgYmUKPiAgICBpbXBsZW1lbnRlZCBieSBpZ25vcmluZyBBIGZv ciB0aGUgbmV4dCA8bnVtYmVyPiBzY2hlZHVsaW5nCj4gICAgZGVjaXNpb25zIGFmdGVyIGl0IHlp ZWxkZWQgKHRoaXMgaXMgYmFzaWNhbGx5IHdoYXQgaGFwcGVucyBpbgo+ICAgIENyZWRpdDIpLiBC b3RoIGFwcHJvYWNoZXMgaGF2ZSBwcm9zIGFuZCBjb25zLCBidXQgdGhlIGNvbW1vbiBib3R0b24K PiAgICBsaW5lIGlzIHRoYXQgb3RoZXJzIGFyZSBnaXZlbiBhIGNoYW5jZSB0byBydW4uCj4KPiAg LSB2Y3B1IEEgeWllbGRzLCBhbmQgdGhlcmUgYXJlIG5vIHJ1bm5hYmxlIGJ1dCBub3QgcnVubmlu ZyB2Y3B1cwo+ICAgIGFyb3VuZC4gSW4gdGhpcyBjYXNlLCBBIGdldHMgdG8gcnVuIGFnYWluLiBG dWxsIHN0b3AuCgpXaGljaCB0dXJuIHRvIGJlIHRoZSBidXN5IGxvb3BpbmcgSSB3YXMgbWVudGlv bmluZyB3aGVuIG9uZSB2Q1BVIGlzIAphc3NpZ25lZCB0byBhIHBDUFUuIFRoaXMgaXMgbm90IHRo ZSBnb2FsIG9mIFdGSSBhbmQgSSB3b3VsZCBiZSByZWFsbHkgCnN1cnByaXNlZCB0aGF0IGVtYmVk ZGVkIGZvbGtzIHdpbGwgYmUgaGFwcHkgd2l0aCBhIHNvbHV0aW9uIHVzaW5nIG1vcmUgCnBvd2Vy LgoKPiBBbmQgd2hlbiBhIHZjcHUgdGhhdCBoYXMgeWllbGRlZCBpcyBwaWNrZWQgdXAgYmFjayBm b3IgZXhlY3V0aW9uCj4gLS1laXRoZXIgaW1tZWRpYXRlbHkgb3IgYWZ0ZXIgYSBmZXcgb3RoZXJz LS0gaXQgY2FuIHJ1biBhZ2Fpbi4gQW5kIGlmCj4gaXQgeWllbGRzIGFnYWluIChhbmQgYWdhaW4s IGFuZCBhZ2FpbiksIHdlIGp1c3QgZ28gYmFjayB0byBvcHRpb24gMSBvcgo+IDIgYWJvdmUuCj4K Pj4gSW4gYm90aCBjYXNlcyB0aGUgdmNwdXMgaXMgbm90IHJ1biB1bnRpbCB0aGUgbmV4dCBzbG90 LCBzbyBJIGRvbid0Cj4+IHRoaW5rCj4+IGl0IHNob3VsZCBtYWtlIHRoZSBwZXJmb3JtYW5jZSB3 b3JzZSBpbiBtdWx0aS12Y3B1cyBzY2VuYXJpb3MuIEJ1dCBJCj4+IGNhbgo+PiBkbyBzb21lIHRl c3RzIHRvIGRvdWJsZSBjaGVjay4KPj4KPiBBbGwgdGhlIGFib3ZlIGJlaW5nIHNhaWQsIEkgYWxz byBkb24ndCB0aGluayBpdCB3aWxsIGFmZmVjdCBtdWNoIG11bHRpLQo+IHZjcHVzIFZNJ3MgcGVy Zm9ybWFuY2UuIEluIGZhY3QsIGV2ZW4gaWYgdGhlIHlpZWxkaW5nIHZjcHUgaXMgbmV2ZXIKPiBy ZWFsbHkgc3RvcHBlZCwgdGhlIG90aGVyIG9uZXMgYXJlIGluZGVlZCBnaXZlbiBhIGNoYW5jZSB0 byBleGVjdXRlIGlmCj4gdGhleSB3YW50IGFuZCBhcmUgY2FwYWJsZSBvZi4KPgo+IEJ1dCBzdXJl IGl0IHdvdWxkIG5vdCBoYXJtIHZlcmlmeWluZyB3aXRoIHNvbWUgdGVzdHMuCj4KPj4+IFRoZSBt YWluIHBvaW50IG9mIHVzaW5nIHdmaSBpcyBmb3IgcG93ZXIgc2F2aW5nLiBXaXRoIHRoaXMgY2hh bmdlLAo+Pj4geW91IHdpbGwKPj4+IGVuZCB1cCBpbiBhIGJ1c3kgbG9vcCBhbmQgYXMgeW91IHNh aWQgY29uc3VtZSBtb3JlIHBvd2VyLgo+Pgo+PiBUaGF0J3Mgbm90IHRydWU6IHRoZSB2Y3B1IGlz IHN0aWxsIGRlc2NoZWR1bGVkIHVudGlsIHRoZSBuZXh0IHNsb3QuCj4+IFRoZXJlIGlzIG5vIGJ1 c3kgbG9vcCAodGhhdCB3b3VsZCBiZSBpbmRlZWQgdmVyeSBiYWQpLgo+Pgo+IFdlbGwsIGFzIGEg bWF0dGVyIG9mIGZhY3QgdGhlcmUgbWF5IGJlIGJ1c3ktbG9vcGluZyBpbnZvbHZlZC4uLiBCdXQK PiBpc24ndCBpdCB0aGUgbWFpbiBwb2ludCBvZiB0aGlzIGFsbC4gQUZBSVIsIGlkbGU9cG9vbCBp biBMaW51eCBkb2VzCj4gdmVyeSBtdWNoIHRoZSBzYW1lLCBhbmQgaGFzIHRoZSBzYW1lIHJpc2sg b2YgcG90ZW50aWFsbHkgbGV0dGluZyB0YXNrcwo+IGJ1c3kgbG9vcC4KPgo+IFdoYXQgd2lsbCBu ZXZlciBoYXBwZW4gaXMgdGhhdCBhIHlpZWxkaW5nIHZjcHUsIGJ5IGJ1c3kgbG9vcGluZywKPiBw cmV2ZW50cyBvdGhlciBydW5uYWJsZSAoYW5kIG5vbiB5aWVsZGluZykgdmNwdXMgdG8gcnVuLiBB bmQgaWYgaXQKPiBkb2VzLCBpdCdzIGEgYnVnLiA6LSkKCkkgZGlkbid0IHNheSBpdCB3aWxsIHBy ZXZlbnQgYW5vdGhlciB2Q1BVIHRvIHJ1bi4gQnV0IGl0IHdpbGwgYXQgbGVhc3QgCnVzZSBzbG90 IHRoYXQgY291bGQgaGF2ZSBiZWVuIHVzZWQgZm9yIGdvb2QgcHVycG9zZSBieSBhbm90aGVyIHBD UFUuCgpTbyBpbiBzaW1pbGFyIHdvcmtsb2FkIFhlbiB3aWxsIHBlcmZvcm0gd29yc3Qgd2l0aCB2 d2ZpPWlkbGUsIG5vdCBldmVuIAptZW50aW9uaW5nIHRoZSBwb3dlciBjb25zdW1wdGlvbi4uLgoK Pgo+Pj4gSSBkb24ndCB0aGluayB0aGlzIGlzIGFjY2VwdGFibGUgZXZlbiB0byBnZXQgYSBiZXR0 ZXIgaW50ZXJydXB0Cj4+PiBsYXRlbmN5LiBTb21lCj4+PiB3b3JrbG9hZCB3aWxsIGNhcmUgYWJv dXQgaW50ZXJydXB0IGxhdGVuY3kgYW5kIHBvd2VyLgo+Pj4KPj4+IEkgdGhpbmsgYSBiZXR0ZXIg YXBwcm9hY2ggd291bGQgYmUgdG8gY2hlY2sgd2hldGhlciB0aGUgc2NoZWR1bGVyCj4+PiBoYXMg YW5vdGhlcgo+Pj4gdkNQVSB0byBydW4uIElmIG5vdCB3YWl0IGZvciBhbiBpbnRlcnJ1cHQgaW4g dGhlIHRyYXAuCj4+Pgo+Pj4gVGhpcyB3b3VsZCBzYXZlIHRoZSBjb250ZXh0IHN3aXRjaCB0byB0 aGUgaWRsZSB2Q1BVIGlmIHdlIGFyZSBzdGlsbAo+Pj4gb24gdGhlCj4+PiB0aW1lIHNsaWNlIG9m IHRoZSB2Q1BVLgo+Pgo+PiBGcm9tIG15IGxpbWl0ZWQgdW5kZXJzdGFuZGluZyBvZiBob3cgc2No ZWR1bGVycyB3b3JrLCBJIHRoaW5rIHRoaXMKPj4gY2Fubm90IHdvcmsgcmVsaWFibHkuIEl0IGlz IHRoZSBzY2hlZHVsZXIgdGhhdCBuZWVkcyB0byB0ZWxsIHRoZQo+PiBhcmNoLXNwZWNpZmljIGNv ZGUgdG8gcHV0IGEgcGNwdSB0byBzbGVlcCwgbm90IHRoZSBvdGhlciB3YXkgYXJvdW5kLgo+Pgo+ IFllcywgdGhhdCBpcyBiYXNpY2FsbHkgdHJ1ZS4KPgo+IEFub3RoZXIgd2F5IHRvIGV4cGxhaW4g aXQgd291bGQgYmUgYnkgc2F5aW5nIHRoYXQsIGlmIHRoZXJlIHdlcmUgb3RoZXIKPiB2Q1BVcyB0 byBydW4sIHdlIHdvdWxkbid0IGhhdmUgZ29uZSBpZGxlIChhbmQgZW50ZXJlZCB0aGUgaWRsZSBs b29wKS4KPgo+IEluIGZhY3QsIGluIHdvcmsgY29uc2VydmluZyBzY2hlZHVsZXJzLCBpZiBwQ1BV IHggYmVjb21lcyBpZGxlLCBpdAo+IG1lYW5zIHRoZXJlIGlzIF9ub3RoaW5nXyB0aGF0IGNhbiBl eGVjdXRlIG9uIHggaXRzZWxmIGFyb3VuZC4gQW5kIG91cgo+IHNjaGVkdWxlcnMgYXJlICh3aXRo IHRoZSBleGNlcHRpb24gb2YgQVJSSU5DLCBhbmQgaWYgbm90IHVzaW5nIGNhcHMgaW4KPiBDcmVk aXQxKSB3b3JrIGNvbnNlcnZpbmcsIG9yIGF0IGxlYXN0IHRoZXkgd2FudCBhbmQgdHJ5IHRvIGJl IGFuIGFzCj4gbXVjaCB3b3JrIGNvbnNlcnZpbmcgYXMgcG9zc2libGUuCgpNeSBrbm93bGVkZ2Ug b2YgdGhlIHNjaGVkdWxlciBpcyBsaW1pdGVkLiBEb2VzIHRoZSBzY2hlZHVsZXIgdGFrZSBpbnRv IAphY2NvdW50IHRoZSBjb3N0IG9mIGNvbnRleHQgc3dpdGNoIHdoZW4gc2NoZWR1bGluZz8gV2hl biBkbyB5b3UgZGVjaWRlIAp3aGVuIHRvIHJ1biB0aGUgaWRsZSB2Q1BVPyBJcyBpdCBvbmx5IHRo ZSBubyBvdGhlciB2Q1BVIGFyZSBydW5uYWJsZSBvciAKZG8geW91IGhhdmUgYW4gaGV1cmlzdGlj PwoKQ2hlZXJzLAoKLS0gCkp1bGllbiBHcmFsbAoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlz dHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==