From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: [PATCH 01/13] xen/arm: domain: Zeroed the vCPU stack Date: Tue, 29 May 2018 14:41:17 -0700 (PDT) Message-ID: References: <20180522174254.27551-1-julien.grall@arm.com> <20180522174254.27551-2-julien.grall@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fNmMq-0007EG-FU for xen-devel@lists.xenproject.org; Tue, 29 May 2018 21:41:20 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Julien Grall Cc: xen-devel@lists.xenproject.org, Stefano Stabellini , andre.przywara@arm.com List-Id: xen-devel@lists.xenproject.org T24gVHVlLCAyOSBNYXkgMjAxOCwgSnVsaWVuIEdyYWxsIHdyb3RlOgo+IEhpIFN0ZWZhbm8sCj4g Cj4gT24gMjUvMDUvMTggMjE6NTIsIFN0ZWZhbm8gU3RhYmVsbGluaSB3cm90ZToKPiA+IE9uIFR1 ZSwgMjIgTWF5IDIwMTgsIEp1bGllbiBHcmFsbCB3cm90ZToKPiA+ID4gQSBzdGFjayBpcyBhbGxv Y2F0ZWQgcGVyIHZDUFUgdG8gYmUgdXNlZCBieSBYZW4uIFRoZSBhbGxvY2F0aW9uIGlzIGRvbmUK PiA+ID4gd2l0aCBhbGxvY194ZW5oZWFwX3BhZ2VzIHRoYXQgZG9lcyBub3QgemVybyB0aGUgbWVt b3J5IHJldHVybmVkLiBIb3dldmVyCj4gPiA+IHRoZSB0b3Agb2YgdGhlIHN0YWNrIGlzIGNvbnRh aW5pbmcgaW5mb3JtYXRpb24gdGhhdCB3aWxsIGJlIHVzZWQgdG8KPiA+ID4gc3RvcmUgdGhlIGlu aXRpYWwgc3RhdGUgb2YgdGhlIHZDUFUgKHNlZSBzdHJ1Y3QgY3B1X2luZm8pLiBTb21lIG9mIHRo ZQo+ID4gPiBmaWVsZHMgbWF5IG5vdCBiZSBpbml0aWFsaXplZCBhbmQgd2lsbCBsZWFkIHRvIHVz ZS9sZWFrIGJpdHMgb2YgcHJldmlvdXMKPiA+ID4gbWVtb3J5IGluIHNvbWUgY2FzZXMgb24gdGhl IGZpcnN0IHJ1biBvZiB2Q1BVIChBRkFJQ1QgdGhpcyBvbmx5IGhhcHBlbiBvbgo+ID4gPiB2Q1BV MCBmb3IgRG9tMCkuCj4gPiA+IAo+ID4gPiBXaGlsZSB0aGlzIGlzIG5vdCBzdHJpY3RseSBuZWNl c3NhcnksIHRoaXMgcGF0Y2ggemVybyB0aGUgZnVsbCBzdGFjayB0bwo+ID4gPiBhdm9pZCBtb3Jl IGxlYWthZ2UuCj4gPiAKPiA+IFdlbGwgc3BvdHRlZCEgc3RydWN0IGNwdV9pbmZvIGlzIHRoZSBv bmx5IGluc3RhbmNlIG9mIHRoZXNlIGNhc2VzLCBJCj4gPiBzdWdnZXN0IHRvIHplcm8gb25seSBz aXplb2Yoc3RydWN0IGNwdV9pbmZvKSB0byBhdm9pZCBoYXZpbmcgYW55IGltcGFjdAo+ID4gb24g dGhlIGJvb3QgdGltZS4KPiAKPiBJIHJlYWxseSBkb24ndCBiZWxpZXZlIHRoZSBpbXBhY3QgaXMg bm90aWNlYWJsZSB3aGVuIHlvdSBsb29rIGF0IHRoZSByZXN0IG9mCj4gdGhlIGRvbWFpbiBjcmVh dGlvbi4KPiAKPiA+IAo+ID4gQWZ0ZXIgYWxsLCB3aXRoIHRoaXMgc2VyaWVzIHdlIGhhdmUgdGhl IG1pdGlnYXRpb24gZW5hYmxlZCBhbGwgdGhlIHRpbWUKPiA+IGluIFhlbiBmb3IgWFNBLTI2My4g T3IgZG8geW91IHRoaW5rIHRoZXJlIGFyZSBvdGhlciByZWFzb25zIHRvIGJlCj4gPiBjb25jZXJu ZWQ/Cj4gCj4gVGhpcyBoYXMgbm90aGluZyB0byBkbyB3aXRoIFhTQS0yNjMuIFRoaXMgaXMgbW9y ZSB0aGF0IGl0IHdvdWxkIGJlIGEgZ29vZAo+IHByYWN0aWNlIHRvIHplcm8gYW55dGhpbmcgYnkg ZGVmYXVsdCByYXRoZXIgdGhhbiByZWx5aW5nIG9uIHRoZSBjb2RlIHRvIGRvIHRoZQo+IHByb3Bl ciBpbml0aWFsaXphdGlvbi4gSW4gdGhlIGNhc2Ugb2YgdGhlIHN0YWNrIGl0IHdvdWxkIGJlIHVu LWluaXRpYWxpemVkCj4gdmFsdWUgb3ZlciBjb2RlIGNhbGxlZCBieSBhIGRvbWFpbiBvciBldmVu IGFzc2VtYmx5Lgo+IAo+IFdlIGFscmVhZHkgZG8gdGhhdCBmb3IgYWxsIERvbWFpbiBzcGVjaWZp YyBzdHJ1Y3R1cmUgYnV0IHRoZSBzdGFjay4KPiAKPiBJIGRvbid0IHJlYWxseSBwYXJ0aWN1bGFy bHkgY2FyZSB0byBmdWxseSB6ZXJvZWQgdGhlIHN0YWNrIGlmIHlvdSBkb24ndCB3YW50Cj4gdG8g c2VlIGl0LgoKSSdkIGNob29zZSB0byBvbmx5IHplcm8gd2hhdCB3ZSBuZWVkLgoKCj4gCj4gPiA+ IFRoaXMgaXMgcGFydCBvZiBYU0EtMjYzLgo+ID4gPiAKPiA+ID4gU2lnbmVkLW9mZi1ieTogSnVs aWVuIEdyYWxsIDxqdWxpZW4uZ3JhbGxAYXJtLmNvbT4KPiA+ID4gLS0tCj4gPiA+ICAgeGVuL2Fy Y2gvYXJtL2RvbWFpbi5jIHwgNCArKysrCj4gPiA+ICAgMSBmaWxlIGNoYW5nZWQsIDQgaW5zZXJ0 aW9ucygrKQo+ID4gPiAKPiA+ID4gZGlmZiAtLWdpdCBhL3hlbi9hcmNoL2FybS9kb21haW4uYyBi L3hlbi9hcmNoL2FybS9kb21haW4uYwo+ID4gPiBpbmRleCBlYzBmMDQyYmY3Li5lN2IzM2U5MmZi IDEwMDY0NAo+ID4gPiAtLS0gYS94ZW4vYXJjaC9hcm0vZG9tYWluLmMKPiA+ID4gKysrIGIveGVu L2FyY2gvYXJtL2RvbWFpbi5jCj4gPiA+IEBAIC01NDAsNiArNTQwLDcgQEAgdm9pZCBmcmVlX3Zj cHVfc3RydWN0KHN0cnVjdCB2Y3B1ICp2KQo+ID4gPiAgIGludCB2Y3B1X2luaXRpYWxpc2Uoc3Ry dWN0IHZjcHUgKnYpCj4gPiA+ICAgewo+ID4gPiAgICAgICBpbnQgcmMgPSAwOwo+ID4gPiArICAg IHVuc2lnbmVkIGludCBpOwo+ID4gPiAgICAgICAgIEJVSUxEX0JVR19PTiggc2l6ZW9mKHN0cnVj dCBjcHVfaW5mbykgPiBTVEFDS19TSVpFICk7Cj4gPiA+ICAgQEAgLTU0Nyw2ICs1NDgsOSBAQCBp bnQgdmNwdV9pbml0aWFsaXNlKHN0cnVjdCB2Y3B1ICp2KQo+ID4gPiAgICAgICBpZiAoIHYtPmFy Y2guc3RhY2sgPT0gTlVMTCApCj4gPiA+ICAgICAgICAgICByZXR1cm4gLUVOT01FTTsKPiA+ID4g ICArICAgIGZvciAoIGkgPSAwOyBpIDwgKDFVIDw8IFNUQUNLX09SREVSKTsgaSsrICkKPiA+ID4g KyAgICAgICAgY2xlYXJfcGFnZSh2LT5hcmNoLnN0YWNrICsgKFBBR0VfU0laRSAqIGkpKTsKPiA+ ID4gKwo+ID4gPiAgICAgICB2LT5hcmNoLmNwdV9pbmZvID0gKHN0cnVjdCBjcHVfaW5mbyAqKSh2 LT5hcmNoLnN0YWNrCj4gPiA+ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICsgU1RBQ0tfU0laRQo+ID4gPiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAtIHNpemVvZihzdHJ1Y3QgY3B1X2luZm8pKTsKPiA+ID4gLS0gCj4gPiA+ IDIuMTEuMAo+ID4gPiAKPiAKPiAtLSAKPiBKdWxpZW4gR3JhbGwKPiAKCl9fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QK WGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5v cmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=