From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Stabellini Subject: Re: [PATCH] xen/arm: skip first page when RAM starts at 0x0 Date: Mon, 29 Apr 2019 10:51:53 -0700 (PDT) Message-ID: References: <1556214715-22030-1-git-send-email-sstabellini@kernel.org> <981e7b3f-464b-d37c-e03e-22408ae65f85@arm.com> <5CC2CB8C02000078002295AA@prv1-mh.provo.novell.com> <5CC2D27C02000078002295F6@prv1-mh.provo.novell.com> <43510317-ca8a-ed23-835a-86a28286b919@arm.com> <5CC3283A0200007800229832@prv1-mh.provo.novell.com> <72a0eee1-1d29-2368-3737-d37f7a4926c6@arm.com> <5CC6A47E0200007800229D67@prv1-mh.provo.novell.com> <10687f88-fb6b-721c-c6e8-a1ab06023616@arm.com> <5CC72125020000780022A20F@prv1-mh.provo.novell.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 1hLARj-0004Uu-LN for xen-devel@lists.xenproject.org; Mon, 29 Apr 2019 17:52:07 +0000 In-Reply-To: <5CC72125020000780022A20F@prv1-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jan Beulich Cc: Stefano Stabellini , Stefano Stabellini , Andrew Cooper , Julien Grall , 206497@studenti.unimore.it, xen-devel , nd@arm.com List-Id: xen-devel@lists.xenproject.org T24gTW9uLCAyOSBBcHIgMjAxOSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4gPj4+IE9uIDI5LjA0LjE5 IGF0IDE3OjU0LCA8anVsaWVuLmdyYWxsQGFybS5jb20+IHdyb3RlOgo+ID4gQW55d2F5LCBJIGFs c28gdGVzdGVkIHRoZSBjaGFuZ2Ugc3VnZ2VzdGVkIGJ5IFN0ZWZhbm8uIFRoaXMgd2lsbCBzdWJz dGFudGlhbGx5IAo+ID4gaW5jcmVhc2UgdGhlIHNpemUgb2YgdGhlIGZyYW1ldGFibGUgb24gcGxh dGZvcm0gd2hlcmUgdGhlIFJBTSBkb2VzIG5vdCBzdGFydCAKPiA+IGF0IDAuCj4gPiAKPiA+IEZv ciBpbnN0YW5jZSwgb24gRm91bmRhdGlvbiBNb2RlbCB0aGUgUkFNIHN0YXJ0cyBhdCAyR0IuIEFz IHdlIGRvbid0IGNvbXByZXNzIAo+ID4gYW55IG9mIHRoZSBmaXJzdCAzMSBiaXRzLCB0aGUgZnJh bWV0YWJsZSB3aWxsIG5vdyBiZSAyOE1CIGJpZ2dlciB0aGFuIHdlIAo+ID4gY3VycmVudGx5IGhh dmUgKDExMk1CIHVwIGZyb20gODRNQikuCj4gPiAKPiA+IFNvIEkgdGhpbmsgd2hhdCB3ZSB3YW50 IGlzOgo+ID4gCj4gPiBucl9wZHhzID0gcGZuX3RvX3BkeChlbmQgLSAxKSAtIHBmbl90b19wZHgo c3RhcnQpICsgMTsKPiA+IGZyYW1lX3RhYmxlX2Jhc2VfcGR4ID0gcGZuX3RvX3BkeChzdGFydCk7 Cj4gCj4gWWVzLCBpZiB0aGVyZSdzIG9ubHkgYSBzaW5nbGUgbWVtb3J5IHJhbmdlIGF0IDJHYiwg dGhlbiBzdWJ0cmFjdGluZwo+IHRoZSBiYXNlIGFkZHJlc3Mgd2lsbCBvZiBjb3Vyc2UgeWllbGQg YmV0dGVyIHJlc3VsdHMuIEJ1dCBpZiB0aGVyZSBhcmUKPiBtdWx0aXBsZSByZWdpb25zLCB0aGlu Z3MgcmVhbGx5IGRlcGVuZCBvbiB0aGUgcGxhY2VtZW50IG9mIGFsbCBvZgo+IHRoZW0uCgpJZiB3 ZSBkbyBub3QgY29tcHJlc3MgYW55IFJBTSBhZGRyZXNzZXMgYmVsb3cgNEcsIHRoZW4gd2UgY2Fu bm90CmNvbXBlbnNhdGUgZm9yIGFueSBob2xlcyBpbiB0aGF0IHJhbmdlLiBIb3dldmVyLCBhdCBs ZWFzdCB3ZSBjYW4gc2FmZWx5CnNraXAgdGhlIGZpcnN0IFswLXN0YXJ0XSBsaWtlIEp1bGllbiBz dWdnZXN0ZWQgaW4gdGhlIGNhbGN1bGF0aW9uIG9mCm5yX3BkeHMuCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhl bi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3Jn L21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BCCAC004C9 for ; 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Mon, 29 Apr 2019 17:52:07 +0000 X-Inumbo-ID: 8098b58f-6aa7-11e9-843c-bc764e045a96 Received: from mail.kernel.org (unknown [198.145.29.99]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 8098b58f-6aa7-11e9-843c-bc764e045a96; Mon, 29 Apr 2019 17:52:06 +0000 (UTC) Received: from localhost (c-67-164-102-47.hsd1.ca.comcast.net [67.164.102.47]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 77121215EA; Mon, 29 Apr 2019 17:52:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556560325; bh=smQqXFstXXMfF+CmAFwk/WpMHyMzhMDfHFxmjgW92Z4=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=2jvNqsECZqgqJNe+G1hfpuv5wjH1GWqLXv7RsQs4eQeahlxjwpg82Ee6hBJ6aHUZ8 I2w++lYp1LgijH+DYj2jtTcnhm7+jie/J1rVjsnHIXj+gIXjosR5DcxLSjXW6OXMZa wcb2ZAmwWa+6BtkhpCRccRCLutGFrgj5+ZS2FA1A= Date: Mon, 29 Apr 2019 10:51:53 -0700 (PDT) From: Stefano Stabellini X-X-Sender: sstabellini@sstabellini-ThinkPad-X260 To: Jan Beulich In-Reply-To: <5CC72125020000780022A20F@prv1-mh.provo.novell.com> Message-ID: References: <1556214715-22030-1-git-send-email-sstabellini@kernel.org> <981e7b3f-464b-d37c-e03e-22408ae65f85@arm.com> <5CC2CB8C02000078002295AA@prv1-mh.provo.novell.com> <5CC2D27C02000078002295F6@prv1-mh.provo.novell.com> <43510317-ca8a-ed23-835a-86a28286b919@arm.com> <5CC3283A0200007800229832@prv1-mh.provo.novell.com> <72a0eee1-1d29-2368-3737-d37f7a4926c6@arm.com> <5CC6A47E0200007800229D67@prv1-mh.provo.novell.com> <10687f88-fb6b-721c-c6e8-a1ab06023616@arm.com> <5CC72125020000780022A20F@prv1-mh.provo.novell.com> User-Agent: Alpine 2.10 (DEB 1266 2009-07-14) MIME-Version: 1.0 Subject: Re: [Xen-devel] [PATCH] xen/arm: skip first page when RAM starts at 0x0 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , Stefano Stabellini , Andrew Cooper , Julien Grall , 206497@studenti.unimore.it, xen-devel , nd@arm.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Message-ID: <20190429175153.rE_0soBgr6iU3KOCGJNguSA4uXnz5aObFriCq_pJwnw@z> T24gTW9uLCAyOSBBcHIgMjAxOSwgSmFuIEJldWxpY2ggd3JvdGU6Cj4gPj4+IE9uIDI5LjA0LjE5 IGF0IDE3OjU0LCA8anVsaWVuLmdyYWxsQGFybS5jb20+IHdyb3RlOgo+ID4gQW55d2F5LCBJIGFs c28gdGVzdGVkIHRoZSBjaGFuZ2Ugc3VnZ2VzdGVkIGJ5IFN0ZWZhbm8uIFRoaXMgd2lsbCBzdWJz dGFudGlhbGx5IAo+ID4gaW5jcmVhc2UgdGhlIHNpemUgb2YgdGhlIGZyYW1ldGFibGUgb24gcGxh dGZvcm0gd2hlcmUgdGhlIFJBTSBkb2VzIG5vdCBzdGFydCAKPiA+IGF0IDAuCj4gPiAKPiA+IEZv ciBpbnN0YW5jZSwgb24gRm91bmRhdGlvbiBNb2RlbCB0aGUgUkFNIHN0YXJ0cyBhdCAyR0IuIEFz IHdlIGRvbid0IGNvbXByZXNzIAo+ID4gYW55IG9mIHRoZSBmaXJzdCAzMSBiaXRzLCB0aGUgZnJh bWV0YWJsZSB3aWxsIG5vdyBiZSAyOE1CIGJpZ2dlciB0aGFuIHdlIAo+ID4gY3VycmVudGx5IGhh dmUgKDExMk1CIHVwIGZyb20gODRNQikuCj4gPiAKPiA+IFNvIEkgdGhpbmsgd2hhdCB3ZSB3YW50 IGlzOgo+ID4gCj4gPiBucl9wZHhzID0gcGZuX3RvX3BkeChlbmQgLSAxKSAtIHBmbl90b19wZHgo c3RhcnQpICsgMTsKPiA+IGZyYW1lX3RhYmxlX2Jhc2VfcGR4ID0gcGZuX3RvX3BkeChzdGFydCk7 Cj4gCj4gWWVzLCBpZiB0aGVyZSdzIG9ubHkgYSBzaW5nbGUgbWVtb3J5IHJhbmdlIGF0IDJHYiwg dGhlbiBzdWJ0cmFjdGluZwo+IHRoZSBiYXNlIGFkZHJlc3Mgd2lsbCBvZiBjb3Vyc2UgeWllbGQg YmV0dGVyIHJlc3VsdHMuIEJ1dCBpZiB0aGVyZSBhcmUKPiBtdWx0aXBsZSByZWdpb25zLCB0aGlu Z3MgcmVhbGx5IGRlcGVuZCBvbiB0aGUgcGxhY2VtZW50IG9mIGFsbCBvZgo+IHRoZW0uCgpJZiB3 ZSBkbyBub3QgY29tcHJlc3MgYW55IFJBTSBhZGRyZXNzZXMgYmVsb3cgNEcsIHRoZW4gd2UgY2Fu bm90CmNvbXBlbnNhdGUgZm9yIGFueSBob2xlcyBpbiB0aGF0IHJhbmdlLiBIb3dldmVyLCBhdCBs ZWFzdCB3ZSBjYW4gc2FmZWx5CnNraXAgdGhlIGZpcnN0IFswLXN0YXJ0XSBsaWtlIEp1bGllbiBz dWdnZXN0ZWQgaW4gdGhlIGNhbGN1bGF0aW9uIG9mCm5yX3BkeHMuCgpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhl bi1kZXZlbEBsaXN0cy54ZW5wcm9qZWN0Lm9yZwpodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3Jn L21haWxtYW4vbGlzdGluZm8veGVuLWRldmVs