From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] xen: arm: zero EL2 pagetable pages before use Date: Sat, 12 Mar 2016 23:03:26 +0700 Message-ID: <56E43DCE.6070409@arm.com> References: <1457647206-9436-1-git-send-email-shankerd@codeaurora.org> <56E2BA0E02000078000DB908@prv-mh.provo.novell.com> <56E2C07B.1060007@citrix.com> <56E2D28002000078000DB9B0@prv-mh.provo.novell.com> <56E2C729.9020607@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1afN4M-0005gM-M2 for xen-devel@lists.xenproject.org; Mon, 14 Mar 2016 07:37:38 +0000 In-Reply-To: <56E2C729.9020607@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Andrew Cooper , Jan Beulich , Shanker Donthineni Cc: Julien Grall , xen-devel , Philip Elcan , Vikram Sethi , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org SGksCgpPbiAxMS8wMy8yMDE2IDIwOjI0LCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+IE9uIDExLzAz LzE2IDEzOjEzLCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4gT24gMTEuMDMuMTYgYXQgMTM6NTYs IDxhbmRyZXcuY29vcGVyM0BjaXRyaXguY29tPiB3cm90ZToKPj4+IE9uIDExLzAzLzE2IDExOjI5 LCBKYW4gQmV1bGljaCB3cm90ZToKPj4+Pj4+PiBPbiAxMC4wMy4xNiBhdCAyMzowMCwgPHNoYW5r ZXJkQGNvZGVhdXJvcmEub3JnPiB3cm90ZToKPj4+Pj4gQEAgLTc3MSw2ICs3NzIsNyBAQCB2b2lk IF9faW5pdCBzZXR1cF9mcmFtZXRhYmxlX21hcHBpbmdzKHBhZGRyX3QgcHMsIHBhZGRyX3QgcGUp Cj4+Pj4+ICAgICAgIG5yX3NlY29uZCA9IGZyYW1ldGFibGVfc2l6ZSA+PiBTRUNPTkRfU0hJRlQ7 Cj4+Pj4+ICAgICAgIHNlY29uZF9iYXNlID0gYWxsb2NfYm9vdF9wYWdlcyhucl9zZWNvbmQsIDEp Owo+Pj4+PiAgICAgICBzZWNvbmQgPSBtZm5fdG9fdmlydChzZWNvbmRfYmFzZSk7Cj4+Pj4+ICsg ICAgbWVtc2V0KHNlY29uZCwgMCwgbnJfc2Vjb25kICogUEFHRV9TSVpFKTsKPj4+Pj4gICAgICAg Zm9yICggaSA9IDA7IGkgPCBucl9zZWNvbmQ7IGkrKyApCj4+Pj4+ICAgICAgIHsKPj4+Pj4gICAg ICAgICAgIHB0ZSA9IG1mbl90b194ZW5fZW50cnkoc2Vjb25kX2Jhc2UgKyBpLCBXUklURUFMTE9D KTsKPj4+PiBBbG9uZyB0aG9zZSBsaW5lcyBoZXJlIC0gdXNlIGNsZWFyX3BhZ2UoKSwgcHJlc3Vt YWJseSBieSBtb3ZpbmcgaXQKPj4+PiBpbnRvIHRoZSBsb29wLgo+Pj4gVGhpcyBuZWVkIG9ubHkg aW5pdGlhbGlzZSB0aGUgZW50cmllcyB3aGljaCBhcmUgbm90IGZpbGxlZCBieSB0aGUgbG9vcCwK Pj4+IHdoaWNoIHdpbGwgb25seSBiZSB0aGUgcm91bmRpbmcgc2l6ZSB1cCB0byB0aGUgbmV4dCAy TSBvciAzMk0gYm91bmRhcnkuCj4+Pgo+Pj4gTW9zdCBvZiB0aGUgY29udGVudCBvZiAnc2Vjb25k JyBpcyBleHBsaWNpdGx5IGluaXRpYWxpc2VkLCBzbyB6ZXJvaW5nIGl0Cj4+PiBhbGwgZmlyc3Qg aXMgcmVkdW5kYW50Lgo+PiBXZWxsLCBJIGNlcnRhaW5seSBkb24ndCBrbm93IGFsbCB0aGUgZGV0 YWlscyBvZiBob3cgdGhpcyB3b3JrcyBvbgo+PiBBUk0sIGJ1dCB0aGUgd2F5IEkgcmVtZW1iZXIg dGhlIG9yaWdpbmFsIHByb2JsZW0gZGVzY3JpcHRpb24KPj4gKHNlbnQgYSBmZXcgZGF5cyBhZ28p IHRoZSBwcm9ibGVtIHdhcyB3aXRoIGJvZ3VzIHRyYW5zbGF0aW9ucwo+PiB0byBiZSB2aXNpYmxl IHRyYW5zaWVudGx5LiBPZiBjb3Vyc2UgYWxsIGRlcGVuZHMgb24gd2hldGhlciB0aGUKPj4gcGFn ZSB0YWJsZXMgdGhhdCBhcmUgYmVpbmcgbW9kaWZpZWQgaGVyZSBhcmUgbGl2ZSBvbmVzLCB3aGlj aAo+PiBJIHNpbXBseSBkb24ndCBrbm93Lgo+Cj4gTG9va2luZyBhdCB0aGUgY29kZSBoZXJlLCBz ZWNvbmQgaXMgaG9va2VkIGludG8gdGhlIGxpdmUgcGFnZXRhYmxlcwo+IGltbWVkaWF0ZWx5IGFm dGVyIHRoZSBsb29wLiAgVGhlcmVmb3JlLCBib2d1cyB0cmFuc2xhdGlvbnMgd2lsbCBvbmx5IGJl Cj4gcHJlc2VudCBmb3IgdGhlIHVudG91Y2hlZCBQVEVzIHdoaWNoIG1ha2UgdXAgdGhlIGFsaWdu bWVudCBzcGFjZS4KClRoZSBmcmFtZSB0YWJsZSBzaXplIGlzIGFsd2F5cyBhbGlnbmVkIHRvIDJN Qi8zMk1CLiBIb3dldmVyLCB0aGUgZnJhbWUgCnRhYmxlIG1heSBub3QgdXNlIGFsbCB0aGUgZW50 cmllcyBpbiBhIGxldmVsIDIgcGFnZSB0YWJsZSAod2hpY2ggY292ZXIgCjFHQiBvZiBtZW1vcnkp LiBUaG9zZSB1bnVzZWQgZW50cmllcyB3aWxsIGJlIHVua25vd24gaWYgd2UgZG9uJ3QgY2xlYXIg dGhlbS4KCktlZXBpbmcgdGhlbSB1bmtub3duIGlzIG5vdCBhIHByb2JsZW0gYXMgbG9uZyBhcyBu b2JvZHkgaXMgdHJ5aW5nIHRvIAphY2Nlc3MgdGhlIHVuZGVybHlpbmcgdmlydHVhbCBhZGRyZXNz LgoKSW4gdGhlIGNhc2Ugb2Ygc2V0dXBfZnJhbWV0YWJsZV9tYXBwaW5ncywgWGVuIGlzIHN0aWxs IHJ1bm5pbmcgd2l0aCBhIApzaW5nbGUgcHJvY2Vzc29yIGFuZCB0aGUgZnJhbWVfdGFibGUgaXMg bm90IGFjY2VzcyB1bnRpbCBhZnRlciAKY3JlYXRlX21hcHBpbmdzIGlzIGNhbGxlZC4gVGhlIGZ1 bmN0aW9uIHNob3VsZCBudWtlIGFsbCB0aGUgVExCcyBhdCB0aGUgCmVuZCwgc28gaXQgbG9va3Mg bGlrZSB0byBtZSB0aGF0IHplcm9lZCB0aGUgZW50cmllcyB3aWxsIGhpZGUgdGhlIHJlYWwgCnBy b2JsZW0uCgpOb25ldGhlbGVzcywgSSB3b3VsZCBpbnZhbGlkYXRlIGFsbCB0aGUgZW50cmllcyBp biB0aGUgdGFibGUgdG8gYXZvaWQgCnBvbGx1dGluZyB0aGUgVExCcyB3aXRoIGJvZ3VzIGVudHJp ZXMgYW5kIGdldCBhIGJldHRlciBjcmFzaC4KClJlZ2FyZHMsCgotLSAKSnVsaWVuIEdyYWxsCgpf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwg bWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54ZW4ub3Jn L3hlbi1kZXZlbAo=