From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from us-smtp-2.mimecast.com ([205.139.110.61] helo=us-smtp-delivery-1.mimecast.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iQ6x4-0000xk-6D for kexec@lists.infradead.org; Thu, 31 Oct 2019 09:41:12 +0000 Subject: Re: [PATCH 1/2 RESEND v8] x86/kdump: always reserve the low 1M when the crashkernel option is specified References: <20191031033517.11282-1-lijiang@redhat.com> <20191031033517.11282-2-lijiang@redhat.com> <20191031071345.GA17248@nazgul.tnic> From: lijiang Message-ID: Date: Thu, 31 Oct 2019 17:40:35 +0800 MIME-Version: 1.0 In-Reply-To: <20191031071345.GA17248@nazgul.tnic> 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: Borislav Petkov Cc: jgross@suse.com, Thomas.Lendacky@amd.com, bhe@redhat.com, horms@verge.net.au, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, dhowells@redhat.com, mingo@redhat.com, ebiederm@xmission.com, hpa@zytor.com, tglx@linutronix.de, dyoung@redhat.com, d.hatayama@fujitsu.com, vgoyal@redhat.com 5ZyoIDIwMTnlubQxMOaciDMx5pelIDE1OjEzLCBCb3Jpc2xhdiBQZXRrb3Yg5YaZ6YGTOgo+IFBs ZWFzZSBkbyBub3QgbWVyZ2UgYSAwZGF5IGJvdCBmaXggd2l0aCBhbm90aGVyIHBhdGNoIG9mIHlv dXJzIHdoaWNoCj4gZG9lcyBub3QgY2F1c2UgaXQgaW4gdGhlIGZpcnN0IHBsYWNlLiBXaGVuIHlv dSBsb29rIGF0IHRoaXMgcGF0Y2ggYWxvbmUsCj4gd2hhdCBkbyB5b3UgdGhpbmsgdGhlIFJlcG9y dGVkLWJ5IHRhZyBtZWFucywgaWYgYW55dGhpbmcgYXQgYWxsPwo+IApUaGFua3MgZm9yIHlvdXIg c3VnZ2VzdGlvbnMuCgpNYXliZSBpdCBzaG91bGQgYmUgYSBzZXBhcmF0ZSBwYXRjaCB0byBmaXgg dGhlIG9sZCBjb21waWxlIHdhcm5pbmdzIGFzIGZvbGxvdy4KQW5kIGkgc2hvdWxkIHB1dCB0aGUg cGF0Y2ggaW50byB0aGlzIHNlcmllcy4KCgpjb21taXQgZDIwOTFkMWY0ZjY3ZjFjMzgyOTNiMGU5 M2ZkYmZlZmE3NjY5NDBjZiAoSEVBRCAtPiBtYXN0ZXIpCkF1dGhvcjogTGlhbmJvIEppYW5nIDxs aWppYW5nQHJlZGhhdC5jb20+CkRhdGU6ICAgVGh1IE9jdCAzMSAxNTo0ODowMiAyMDE5ICswODAw CgogICAga2V4ZWM6IEZpeCBpMzg2IGJ1aWxkIHdhcm5pbmdzIHRoYXQgbWlzc2VkIGRlY2xhcmF0 aW9uIG9mIHN0cnVjdCBraW1hZ2UKICAgIAogICAgS2J1aWxkIHRlc3Qgcm9ib3QgcmVwb3J0ZWQg c29tZSBidWlsZCB3YXJuaW5ncywgcGxlYXNlIHJlZmVyIHRvIHRoZQogICAgTGluayBiZWxvdyBm b3IgZGV0YWlscy4KICAgIAogICAgQWRkIGEgZGVjbGFyYXRpb24gb2Ygc3RydWN0IGtpbWFnZSB0 byBmaXggdGhlc2UgY29tcGlsZSB3YXJuaW5ncy4KICAgIAogICAgRml4ZXM6IGRkNWY3MjYwNzZj YyAoImtleGVjOiBzdXBwb3J0IGZvciBrZXhlYyBvbiBwYW5pYyB1c2luZyBuZXcgc3lzdGVtIGNh bGwiKQogICAgUmVwb3J0ZWQtYnk6IGtidWlsZCB0ZXN0IHJvYm90IDxsa3BAaW50ZWwuY29tPgog ICAgU2lnbmVkLW9mZi1ieTogTGlhbmJvIEppYW5nIDxsaWppYW5nQHJlZGhhdC5jb20+CiAgICBM aW5rOiBodHRwczovL2xrbWwub3JnL2xrbWwvMjAxOS8xMC8zMC84MzMKCmRpZmYgLS1naXQgYS9h cmNoL3g4Ni9pbmNsdWRlL2FzbS9jcmFzaC5oIGIvYXJjaC94ODYvaW5jbHVkZS9hc20vY3Jhc2gu aAppbmRleCAwYWNmNWVlNDVhMjEuLmVmNTYzOGY2NDFmMiAxMDA2NDQKLS0tIGEvYXJjaC94ODYv aW5jbHVkZS9hc20vY3Jhc2guaAorKysgYi9hcmNoL3g4Ni9pbmNsdWRlL2FzbS9jcmFzaC5oCkBA IC0yLDYgKzIsOCBAQAogI2lmbmRlZiBfQVNNX1g4Nl9DUkFTSF9ICiAjZGVmaW5lIF9BU01fWDg2 X0NSQVNIX0gKIAorc3RydWN0IGtpbWFnZTsKKwogaW50IGNyYXNoX2xvYWRfc2VnbWVudHMoc3Ry dWN0IGtpbWFnZSAqaW1hZ2UpOwogaW50IGNyYXNoX2NvcHlfYmFja3VwX3JlZ2lvbihzdHJ1Y3Qg a2ltYWdlICppbWFnZSk7CiBpbnQgY3Jhc2hfc2V0dXBfbWVtbWFwX2VudHJpZXMoc3RydWN0IGtp bWFnZSAqaW1hZ2UsCgo+IEFsc28sIGl0IGlzIG5vdCBhICJSRVNFTkQiIGlmIHlvdSBjaGFuZ2Ug dGhlbS4gWW91IGNhbiBjYWxsIHRoZW0gdjguMSBvcgo+IHdoYXRldmVyIHRvIGRlbm90ZSB0aGF0 IHRoZSBjaGFuZ2UgaXMgc21hbGwuCj4gClRoYW5rcyBmb3IgeW91ciBleHBsYW5hdGlvbiBpbiBk ZXRhaWwuCgo+IEFsc28sIGRvIG5vdCBzZW5kIHY5IG9yIHY4LjEgb3Igd2hhdGV2ZXIsIGltbWVk aWF0ZWx5IGJ1dCB3YWl0IGZvciBvdGhlcgo+IHJldmlld3MuCgpPSy4gTGV0cyB3YWl0IGEgd2Vl ayBvciBtb3JlLgoKPiBZb3UgaGF2ZSBzZW50IHRoZXNlIHBhdGNoZXMgNCghKSB0aW1lcyBpbiB0 aGlzIHdlZWsgYWxvbmUuIEhvdwo+IHdvdWxkIHlvdSBmZWVsIGlmIEkgaGFtbWVyIHlvdXIgaW5i b3ggd2l0aCBwYXRjaGVzIG9uIGEgZGFpbHkgYmFzaXM/Cj5Qcm9iYWJseSBiZWNhdXNlIHRoZSBj aGFuZ2UgaXMgc21hbGwuCgpBbnl3YXksIHNvIHNvcnJ5LCBpdCBzZWVtcyBpbmNvbnNpZGVyYXRl LgoKPiBZb3UgY2FuIHJlYWQKPiAKPiBodHRwczovL3d3dy5rZXJuZWwub3JnL2RvYy9odG1sL2xh dGVzdC9wcm9jZXNzL3N1Ym1pdHRpbmctcGF0Y2hlcy5odG1sCj4gCj4gaW4gdGhlIG1lYW50aW1l LCBlc3BlY2lhbGx5IHNlY3Rpb24KPiAKPiAiOSkgRG9uJ3QgZ2V0IGRpc2NvdXJhZ2VkIC0gb3Ig aW1wYXRpZW50Igo+IAo+IHdoaWxlIHdhaXRpbmcuCgpPSy4gVGhhbmtzLgoKTGlhbmJvCgoKX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18Ka2V4ZWMgbWFpbGlu ZyBsaXN0CmtleGVjQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5v cmcvbWFpbG1hbi9saXN0aW5mby9rZXhlYwo=