From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937380AbYEUUgf (ORCPT ); Wed, 21 May 2008 16:36:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S937298AbYEUUgS (ORCPT ); Wed, 21 May 2008 16:36:18 -0400 Received: from yw-out-2324.google.com ([74.125.46.28]:44509 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936423AbYEUUgP (ORCPT ); Wed, 21 May 2008 16:36:15 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=lQkj1258FPA7vUJ45KvsxWl0eDvkbo75E3Rqzkyw0aU/QMrcKhVf/yFubGs86W0ZJrPLL4BqxYerOnCk1F4QSlkLRfM0rRo3XC+jrnmufRlLbZwAPr+4OcDy0VEmoVXjelxmajnsEUQNkDOzHmUJeJQJo15febra5Yi86vad5NY= Message-ID: <86802c440805211335q27334ba1g32a43fb1c0498b9b@mail.gmail.com> Date: Wed, 21 May 2008 13:35:40 -0700 From: "Yinghai Lu" To: "Jeremy Fitzhardinge" Subject: Re: Suspected regression in "x86: extend e820 ealy_res support 32bit" Cc: "Ingo Molnar" , "kernel list" , "Thomas Gleixner" , "H. Peter Anvin" In-Reply-To: <483467CD.90401@goop.org> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_8946_8549749.1211402140416" References: <483467CD.90401@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ------=_Part_8946_8549749.1211402140416 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline On Wed, May 21, 2008 at 11:19 AM, Jeremy Fitzhardinge wrote: > I'm seeing a crash in current x86.git tip/auto-latest when booting under > Xen. The crash is rather early, but it's in __alloc_bootmem_core() in the > final memset clear. Apparently the allocator is returning a bad page. > > This points to changes in the setup of the bootmem allocator, and the > changes "x86: extend e820 ealy_res support 32bit" make to > arch/x86/kernel/setup_32.c:setup_bootmem_allocator() looks like the most > likely suspect. Unfortunately its a rather large patch which is not easy to > revert, so I haven't actually confirmed this yet. thanks. please check the attached patch YH ------=_Part_8946_8549749.1211402140416 Content-Type: text/x-patch; name=bootmap_32_fix.patch Content-Transfer-Encoding: base64 X-Attachment-Id: f_fgidjjf50 Content-Disposition: attachment; filename=bootmap_32_fix.patch W1BBVENIXSB4ODY6IGJvb3RtYXAgc2l6ZSBmaXggZm9yIDMyIGJpdAoKSmVyZW15IEZpdHpoYXJk aW5nZSBmb3VuZAp4ODY6IGV4dGVuZCBlODIwIGVhbHlfcmVzIHN1cHBvcnQgMzJiaXQKY2F1c2Ug cmVncmVzc2lvbi4uLgoKaW4gc2V0dXBfYm9vdG1lbV9hbGxvY2F0b3IKClNpZ25lZC1vZmYtYnk6 IFlpbmdoYWkgTHUgPHlobHUua2VybmVsQGdtYWlsLmNvbT4KCmRpZmYgLS1naXQgYS9hcmNoL3g4 Ni9rZXJuZWwvc2V0dXBfMzIuYyBiL2FyY2gveDg2L2tlcm5lbC9zZXR1cF8zMi5jCmluZGV4IGYz OGQ4NDAuLjkzOGM3YjMgMTAwNjQ0Ci0tLSBhL2FyY2gveDg2L2tlcm5lbC9zZXR1cF8zMi5jCisr KyBiL2FyY2gveDg2L2tlcm5lbC9zZXR1cF8zMi5jCkBAIC01NjYsMTcgKzU2NiwyMiBAQCBzdGF0 aWMgdm9pZCBfX2luaXQgcmVsb2NhdGVfaW5pdHJkKHZvaWQpCiAKIHZvaWQgX19pbml0IHNldHVw X2Jvb3RtZW1fYWxsb2NhdG9yKHZvaWQpCiB7CisJdW5zaWduZWQgbG9uZyBib290bWFwX3BhZ2Vz OwogCXVuc2lnbmVkIGxvbmcgYm9vdG1hcF9zaXplLCBib290bWFwOwogCS8qCiAJICogSW5pdGlh bGl6ZSB0aGUgYm9vdC10aW1lIGFsbG9jYXRvciAod2l0aCBsb3cgbWVtb3J5IG9ubHkpOgogCSAq LwotCWJvb3RtYXBfc2l6ZSA9IGJvb3RtZW1fYm9vdG1hcF9wYWdlcyhtYXhfbG93X3Bmbik8PFBB R0VfU0hJRlQ7CisJYm9vdG1hcF9wYWdlcyA9IGJvb3RtZW1fYm9vdG1hcF9wYWdlcyhtYXhfbG93 X3Bmbik8PFBBR0VfU0hJRlQ7CiAJYm9vdG1hcCA9IGZpbmRfZTgyMF9hcmVhKG1pbl9sb3dfcGZu PDxQQUdFX1NISUZULAotCQkJCSBtYXhfbG93X3Bmbjw8UEFHRV9TSElGVCwgYm9vdG1hcF9zaXpl LAorCQkJCSBtYXhfbG93X3Bmbjw8UEFHRV9TSElGVCwKKwkJCQkgYm9vdG1hcF9wYWdlczw8UEFH RV9TSElGVCwKIAkJCQkgUEFHRV9TSVpFKTsKIAlpZiAoYm9vdG1hcCA9PSAtMUwpCiAJCXBhbmlj KCJDYW5ub3QgZmluZCBib290bWVtIG1hcCBvZiBzaXplICVsZFxuIiwgYm9vdG1hcF9zaXplKTsK IAlib290bWFwX3NpemUgPSBpbml0X2Jvb3RtZW0oYm9vdG1hcCA+PiBQQUdFX1NISUZULCBtYXhf bG93X3Bmbik7CisJcHJpbnRrKEtFUk5fSU5GTyAiICBib290bWFwIFslMDE2bHggLSAgJTAxNmx4 XSBwYWdlcyAlbHhcbiIsCisJCSBib290bWFwLCBib290bWFwICsgYm9vdG1hcF9zaXplIC0gMSwK KwkJIGJvb3RtYXBfcGFnZXMpOwogCXJlZ2lzdGVyX2Jvb3RtZW1fbG93X3BhZ2VzKG1heF9sb3df cGZuKTsKIAllYXJseV9yZXNfdG9fYm9vdG1lbSgwLCBtYXhfbG93X3Bmbjw8UEFHRV9TSElGVCk7 CiAJcmVzZXJ2ZV9ib290bWVtKGJvb3RtYXAsIGJvb3RtYXBfc2l6ZSwgQk9PVE1FTV9ERUZBVUxU KTsK ------=_Part_8946_8549749.1211402140416--