From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from us-smtp-2.mimecast.com ([207.211.31.81] helo=us-smtp-delivery-1.mimecast.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iNmxh-0007rx-7b for kexec@lists.infradead.org; Thu, 24 Oct 2019 23:56:15 +0000 Subject: Re: [PATCH] x86/kdump: always reserve the low 1MiB when the crashkernel References: <75648e8d-4ef7-0537-618e-e4a57f0d3b9b@redhat.com> <201910250603.En7IO6Xd%lkp@intel.com> From: lijiang Message-ID: <3fce1517-2a76-53da-1538-aa75f3427d5b@redhat.com> Date: Fri, 25 Oct 2019 07:55:42 +0800 MIME-Version: 1.0 In-Reply-To: <201910250603.En7IO6Xd%lkp@intel.com> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: kbuild test robot Cc: jgross@suse.com, Thomas.Lendacky@amd.com, kbuild-all@lists.01.org, bhe@redhat.com, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, dhowells@redhat.com, mingo@redhat.com, Borislav Petkov , ebiederm@xmission.com, hpa@zytor.com, tglx@linutronix.de, dyoung@redhat.com, vgoyal@redhat.com 5ZyoIDIwMTnlubQxMOaciDI15pelIDA2OjEyLCBrYnVpbGQgdGVzdCByb2JvdCDlhpnpgZM6Cj4g SGkgbGlqaWFuZywKPiAKPiBUaGFuayB5b3UgZm9yIHRoZSBwYXRjaCEgUGVyaGFwcyBzb21ldGhp bmcgdG8gaW1wcm92ZToKPiAKPiBbYXV0byBidWlsZCB0ZXN0IFdBUk5JTkcgb24gbGludXMvbWFz dGVyXQo+IFtjYW5ub3QgYXBwbHkgdG8gdjUuNC1yYzQgbmV4dC0yMDE5MTAyNF0KPiBbaWYgeW91 ciBwYXRjaCBpcyBhcHBsaWVkIHRvIHRoZSB3cm9uZyBnaXQgdHJlZSwgcGxlYXNlIGRyb3AgdXMg YSBub3RlIHRvIGhlbHAKPiBpbXByb3ZlIHRoZSBzeXN0ZW0uIEJUVywgd2UgYWxzbyBzdWdnZXN0 IHRvIHVzZSAnLS1iYXNlJyBvcHRpb24gdG8gc3BlY2lmeSB0aGUKPiBiYXNlIHRyZWUgaW4gZ2l0 IGZvcm1hdC1wYXRjaCwgcGxlYXNlIHNlZSBodHRwczovL3N0YWNrb3ZlcmZsb3cuY29tL2EvMzc0 MDY5ODJdCj4gCj4gdXJsOiAgICBodHRwczovL2dpdGh1Yi5jb20vMGRheS1jaS9saW51eC9jb21t aXRzL2xpamlhbmcveDg2LWtkdW1wLWFsd2F5cy1yZXNlcnZlLXRoZS1sb3ctMU1pQi13aGVuLXRo ZS1jcmFzaGtlcm5lbC8yMDE5MTAyNS0wMzA0MzkKPiBiYXNlOiAgIGh0dHBzOi8vZ2l0Lmtlcm5l bC5vcmcvcHViL3NjbS9saW51eC9rZXJuZWwvZ2l0L3RvcnZhbGRzL2xpbnV4LmdpdCBmMTE2Yjk2 Njg1YTA0NmE4OWMyNWQ0YTZiYTJkYTQ4OTE0NWM4ODg4Cj4gY29uZmlnOiBpMzg2LWRlZmNvbmZp ZyAoYXR0YWNoZWQgYXMgLmNvbmZpZykKPiBjb21waWxlcjogZ2NjLTcgKERlYmlhbiA3LjQuMC0x NCkgNy40LjAKPiByZXByb2R1Y2U6Cj4gICAgICAgICAjIHNhdmUgdGhlIGF0dGFjaGVkIC5jb25m aWcgdG8gbGludXggYnVpbGQgdHJlZQo+ICAgICAgICAgbWFrZSBBUkNIPWkzODYgCj4gCj4gSWYg eW91IGZpeCB0aGUgaXNzdWUsIGtpbmRseSBhZGQgZm9sbG93aW5nIHRhZwo+IFJlcG9ydGVkLWJ5 OiBrYnVpbGQgdGVzdCByb2JvdCA8bGtwQGludGVsLmNvbT4KPiAKPiBBbGwgd2FybmluZ3MgKG5l dyBvbmVzIHByZWZpeGVkIGJ5ID4+KToKPiAKPj4+IFdBUk5JTkc6IHZtbGludXgubygudGV4dCsw eGUzOWI3KTogU2VjdGlvbiBtaXNtYXRjaCBpbiByZWZlcmVuY2UgZnJvbSB0aGUgZnVuY3Rpb24g a2V4ZWNfcmVzZXJ2ZV9sb3dfMU1pQigpIHRvIHRoZSB2YXJpYWJsZSAuaW5pdC5kYXRhOmJvb3Rf Y29tbWFuZF9saW5lCj4gICAgVGhlIGZ1bmN0aW9uIGtleGVjX3Jlc2VydmVfbG93XzFNaUIoKSBy ZWZlcmVuY2VzCj4gICAgdGhlIHZhcmlhYmxlIF9faW5pdGRhdGEgYm9vdF9jb21tYW5kX2xpbmUu Cj4gICAgVGhpcyBpcyBvZnRlbiBiZWNhdXNlIGtleGVjX3Jlc2VydmVfbG93XzFNaUIgbGFja3Mg YSBfX2luaXRkYXRhCj4gICAgYW5ub3RhdGlvbiBvciB0aGUgYW5ub3RhdGlvbiBvZiBib290X2Nv bW1hbmRfbGluZSBpcyB3cm9uZy4KPiAtLQo+Pj4gV0FSTklORzogdm1saW51eC5vKC50ZXh0KzB4 ZTM5ZDApOiBTZWN0aW9uIG1pc21hdGNoIGluIHJlZmVyZW5jZSBmcm9tIHRoZSBmdW5jdGlvbiBr ZXhlY19yZXNlcnZlX2xvd18xTWlCKCkgdG8gdGhlIGZ1bmN0aW9uIC5tZW1pbml0LnRleHQ6bWVt YmxvY2tfcmVzZXJ2ZSgpCj4gICAgVGhlIGZ1bmN0aW9uIGtleGVjX3Jlc2VydmVfbG93XzFNaUIo KSByZWZlcmVuY2VzCj4gICAgdGhlIGZ1bmN0aW9uIF9fbWVtaW5pdCBtZW1ibG9ja19yZXNlcnZl KCkuCj4gICAgVGhpcyBpcyBvZnRlbiBiZWNhdXNlIGtleGVjX3Jlc2VydmVfbG93XzFNaUIgbGFj a3MgYSBfX21lbWluaXQKPiAgICBhbm5vdGF0aW9uIG9yIHRoZSBhbm5vdGF0aW9uIG9mIG1lbWJs b2NrX3Jlc2VydmUgaXMgd3JvbmcuCj4gClRoZXNlIHdhcm5pbmdzIGhhdmUgYmVlbiBmaXhlZCBp biBwYXRjaCB2NS4gUGxlYXNlIHJlZmVyIHRvIHRoZSBsYXRlc3QgcGF0Y2ggdjUuCgpUaGFua3Mu CkxpYW5ibwoKPiAtLS0KPiAwLURBWSBrZXJuZWwgdGVzdCBpbmZyYXN0cnVjdHVyZSAgICAgICAg ICAgICAgICBPcGVuIFNvdXJjZSBUZWNobm9sb2d5IENlbnRlcgo+IGh0dHBzOi8vbGlzdHMuMDEu b3JnL3BpcGVybWFpbC9rYnVpbGQtYWxsICAgICAgICAgICAgICAgICAgIEludGVsIENvcnBvcmF0 aW9uCj4gCgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K a2V4ZWMgbWFpbGluZyBsaXN0CmtleGVjQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3Rz LmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9rZXhlYwo=