From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Durrant Subject: Re: [PATCH] x86/boot: re-arrange how/when we do disk I/O Date: Mon, 26 Jun 2017 15:14:50 +0000 Message-ID: References: <593ECB5D0200007800162126@prv-mh.provo.novell.com> <593ECB5D0200007800162126@prv-mh.provo.novell.com> <593ECF0B0200007800162158@prv-mh.provo.novell.com> <0aa37cb6-8ffa-03fb-affc-73c430d7cd20@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 1dPVjB-0007i5-HO for xen-devel@lists.xenproject.org; Mon, 26 Jun 2017 15:15:01 +0000 In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: 'Julien Grall' , Jan Beulich Cc: Andrew Cooper , Lars Kurth , xen-devel List-Id: xen-devel@lists.xenproject.org PiAtLS0tLU9yaWdpbmFsIE1lc3NhZ2UtLS0tLQo+IEZyb206IEp1bGllbiBHcmFsbCBbbWFpbHRv Omp1bGllbi5ncmFsbEBhcm0uY29tXQo+IFNlbnQ6IDI2IEp1bmUgMjAxNyAxNDowNAo+IFRvOiBK YW4gQmV1bGljaCA8SkJldWxpY2hAc3VzZS5jb20+Cj4gQ2M6IEFuZHJldyBDb29wZXIgPEFuZHJl dy5Db29wZXIzQGNpdHJpeC5jb20+OyBQYXVsIER1cnJhbnQKPiA8UGF1bC5EdXJyYW50QGNpdHJp eC5jb20+OyB4ZW4tZGV2ZWwgPHhlbi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZz47Cj4gTGFy cyBLdXJ0aCA8bGFycy5rdXJ0aEBjaXRyaXguY29tPgo+IFN1YmplY3Q6IFJlOiBbUEFUQ0hdIHg4 Ni9ib290OiByZS1hcnJhbmdlIGhvdy93aGVuIHdlIGRvIGRpc2sgSS9PCj4gCj4gSGksCj4gCj4g T24gMTIvMDYvMTcgMTc6NTksIEp1bGllbiBHcmFsbCB3cm90ZToKPiA+IEhpIEphbiwKPiA+Cj4g PiBPbiAxMi8wNi8xNyAxNjoyNywgSmFuIEJldWxpY2ggd3JvdGU6Cj4gPj4+Pj4gT24gMTIuMDYu MTcgYXQgMTc6MTEsIDxKQmV1bGljaEBzdXNlLmNvbT4gd3JvdGU6Cj4gPj4+IFdlIHBsYWNlIHRo ZSB0cmFtcG9saW5lIG5vIGxvd2VyIHRoYW4gYXQgMjU2aywgc28gd2UgaGF2ZSBhbXBsZSBzcGFj ZQo+ID4+PiB0byByZWFkIHRoZSBNQlJzIG9mIEJJT1MgZGlza3MgaW50byBhbiBhbGlnbmVkIGJ1 ZmZlciByaWdodCBiZWxvdyB0aGUKPiA+Pj4gdHJhbXBvbGluZSAobm90IGRvaW5nIHNvIGhhcyBi ZWVuIGZvdW5kIHRvIGJlIGEgcHJvYmxlbSBvbiBhIGJ1Z2d5Cj4gQklPUwo+ID4+PiBjb21pbmcg d2l0aCBhIFNrdWxsIENhbnlvbiBOVUMpLiBUbyBmYWNpbGl0YXRlIHRoYXQgbW92ZSBNQlIgcmVh ZGluZwo+ID4+PiBwYXN0IEVERCBpbmZvIHJldHJpZXZhbC4KPiA+Pj4KPiA+Pj4gQWxzbyBhZGQg YSB3cmFwIGNoZWNrIHRvIHRoZSBFREQgaW5mbyByZXRyaWV2YWwgbG9vcCwgdG8gbWF0Y2ggdGhh dCBpbgo+ID4+PiB0aGUgTUJSIHJlYWRpbmcgb25lLgo+ID4+Pgo+ID4+PiBSZXBvcnRlZC1ieTog UGF1bCBEdXJyYW50IDxQYXVsLkR1cnJhbnRAY2l0cml4LmNvbT4KPiA+Pj4gU2lnbmVkLW9mZi1i eTogSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+ID4+PiBUZXN0ZWQtYnk6IFBhdWwg RHVycmFudCA8UGF1bC5EdXJyYW50QGNpdHJpeC5jb20+Cj4gPj4KPiA+PiBBcyB0byA0LjkgaW5j bHVzaW9uLCBJIHRoaW5rIEkgc2hvdWxkIGhhdmUgbWVudGlvbmVkIHJpZ2h0IGF3YXkKPiA+PiB0 aGF0IHN1Y2ggYSBjaGFuZ2Ugb2YgY291cnNlIGlzbid0IHdpdGhvdXQgcmlzazogV2UncmUgdHJ5 aW5nIHRvCj4gPj4gd29yayBhcm91bmQgYSBCSU9TIGJ1ZyBieSByZWx5aW5nIG9uIG90aGVyIGlu Zm9ybWF0aW9uCj4gPj4gY29taW5nIGZyb20gdGhlIEJJT1MgYmVpbmcgY29ycmVjdCAvIHVzYWJs ZS4gT2J2aW91c2x5IHRoZXJlIGlzCj4gPj4gdGhlIHJpc2sgdGhhdCB0aGlzIHJlZ3Jlc3NlcyB3 aXRoIHNvbWUgb3RoZXIgQklPUyBoYXZpbmcgYSBidWcKPiA+PiBlbHNld2hlcmUuCj4gPj4KPiA+ PiBJJ20gdGhlcmVmb3JlIGxlYW5pbmcgdG93YXJkcyBzdWdnZXN0aW5nIHRvIHRha2UgdGhpcyBj aGFuZ2UKPiA+PiBvbmx5IGZvciBtYXN0ZXIgcmlnaHQgbm93LCBhbmQgY29uc2lkZXIgcHVsbGlu ZyBpdCBpbnRvIHRoZSA0LjkKPiA+PiBicmFuY2ggaW4gYSBjb3VwbGUgb2Ygd2Vla3MgdGltZSwg d2hlbiB0aGUgcGF0Y2ggaGFzIHNlZW4gYXQKPiA+PiBsZWFzdCBhIGxpdHRsZSBtb3JlIHRlc3Rp bmcgb24gYSB3aWRlciBzZXQgb2Ygc3lzdGVtcy4KPiA+Cj4gPiBJIGFncmVlIG9uIHlvdXIgY29u Y2x1c2lvbi4gSSB3b3VsZCBzdWdnZXN0IHRvIGFkZCBhIHJlbGVhc2Ugbm90ZSBpZiBpdAo+ID4g aXMgbm90IGJhY2twb3J0ZWQgYmVmb3JlIHRoZSByZWxlYXNlLgo+ID4KPiA+IEkgd2lsbCBrZWVw IHRyYWNrIG9mIHRoaXMuCj4gCj4gSSBoYXZlbid0IHNlZW4gYW55IHVwZGF0ZSBvbiB0aGlzLiBD YW4gc29tZW9uZSBkZXNjcmliZSBicmllZmx5IHRoZQo+IHByb2JsZW0gc28gd2UgY2FuIGFkZCBp dCBpbiB0aGUgc2VjdGlvbiAia25vd24gaXNzdWVzIiBvZiB0aGUgcmVsZWFzZSBub3Rlcz8KPiAK Ckp1bGllbiwKCiAgVGhlIHN5bXB0b20gaXMgYW4gYXBwYXJlbnQgZmFpbHVyZSB0byBwcm9ncmVz cyBiZXlvbmQgdGhlIGdydWIgc3RhZ2Ugd2hlbiB0cnlpbmcgdG8gYm9vdCBYZW4gb24gYSBza3Vs bCBjYW55b24uIFlvdSBzZWUgdGhlIG1lc3NhZ2VzIGFib3V0IGxvYWRpbmcgdGhlIG1vZHVsZXMs IGJ1dCB0aGVuIG5vdGhpbmcgbW9yZSBleGNlcHQgbWF5YmUgYSByZXNldCBvZiB0aGUgdmdhIG1v ZGUgKGRlcGVuZGluZyBvbiB3aGF0IHlvdXIgeGVuIGNvbW1hbmQgbGluZSBsb29rcyBsaWtlKS4K ICBUaGUgcHJvYmxlbSBpcyBhIGJ1Z2d5IEJJT1Mgd2hpY2ggd2VkZ2VzIGluIHRoZSBpbnQxMyBo YW5kbGVyIGluIHNvbWUgY2FzZXMuIFhlbiA0LjkgaGFwcGVucyB0byB0aWNrbGUgdGhpcyBidWcg d2hlcmVhcyBYZW4gNC44IGdvdCBhd2F5IHdpdGggaXQuCgogIENoZWVycywKCiAgICBQYXVsCgo+ IENoZWVycywKPiAKPiAtLQo+IEp1bGllbiBHcmFsbAoKX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxA bGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==