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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 41A21C43334 for ; Thu, 23 Jun 2022 10:28:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2Tze4+E/Pk8qFA59SOBiwMJE3J7mp3udLYnOOE7R7Yk=; b=fteNtnZ46JwTMD XbbNpiEsDpaLEWvOIDSDeHydCoxNtdyROH9LJgiUDwRb3Fk3hPOeIDAoAJBG7qH5wzoZXwi8dp1ZJ dtwxtT0rFsv6Wl3B4aAhScFvrPjJYGVz3tpbazzJwRBQZvXCcYJqsTvKGKirhDYrhgGbyJ5dP/qRe VCngR34jJs2gU08I/3pEQ4I6YW5sXz8r3ZzGk+X3FxvddhPzoYFTaSt9nvEDvK/oOLReKYycBjUJR beDIeV2E9xzZ56QDjsWQFGuCPvT3FbhruXSeuYszzWfQZqPonJ7fMD6vmkIJYko+ih5IxJwcsXTJv hhw1MrUpqVXLtMDcmCbA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o4K3X-00EWb9-SW; Thu, 23 Jun 2022 10:27:23 +0000 Received: from sin.source.kernel.org ([145.40.73.55]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o4K3T-00EWY1-Uh; Thu, 23 Jun 2022 10:27:21 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 70CBFCE23C7; Thu, 23 Jun 2022 10:27:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92F82C3411B; Thu, 23 Jun 2022 10:27:07 +0000 (UTC) Date: Thu, 23 Jun 2022 11:27:03 +0100 From: Catalin Marinas To: Kefeng Wang Cc: Baoquan He , Zhen Lei , Ard Biesheuvel , Mark Rutland , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H . Peter Anvin" , Eric Biederman , Rob Herring , Frank Rowand , devicetree@vger.kernel.org, Dave Young , Vivek Goyal , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Jonathan Corbet , linux-doc@vger.kernel.org, Randy Dunlap , Feng Zhou , Chen Zhou , John Donnelly , Dave Kleikamp , liushixin Subject: Re: [PATCH 5/5] arm64: kdump: Don't defer the reservation of crash high memory Message-ID: References: <20220613080932.663-1-thunder.leizhen@huawei.com> <20220613080932.663-6-thunder.leizhen@huawei.com> <3f66323d-f371-b931-65fb-edfae0f01c88@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220623_032720_375514_7693EF6C X-CRM114-Status: GOOD ( 43.84 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gV2VkLCBKdW4gMjIsIDIwMjIgYXQgMDg6MDM6MjFQTSArMDgwMCwgS2VmZW5nIFdhbmcgd3Jv dGU6Cj4gT24gMjAyMi82LzIyIDI6MDQsIENhdGFsaW4gTWFyaW5hcyB3cm90ZToKPiA+IE9uIFR1 ZSwgSnVuIDIxLCAyMDIyIGF0IDAyOjI0OjAxUE0gKzA4MDAsIEtlZmVuZyBXYW5nIHdyb3RlOgo+ ID4gPiBPbiAyMDIyLzYvMjEgMTM6MzMsIEJhb3F1YW4gSGUgd3JvdGU6Cj4gPiA+ID4gT24gMDYv MTMvMjIgYXQgMDQ6MDlwbSwgWmhlbiBMZWkgd3JvdGU6Cj4gPiA+ID4gPiBJZiB0aGUgY3Jhc2hr ZXJuZWwgaGFzIGJvdGggaGlnaCBtZW1vcnkgYWJvdmUgRE1BIHpvbmVzIGFuZCBsb3cgbWVtb3J5 Cj4gPiA+ID4gPiBpbiBETUEgem9uZXMsIGtleGVjIGFsd2F5cyBsb2FkcyB0aGUgY29udGVudCBz dWNoIGFzIEltYWdlIGFuZCBkdGIgdG8gdGhlCj4gPiA+ID4gPiBoaWdoIG1lbW9yeSBpbnN0ZWFk IG9mIHRoZSBsb3cgbWVtb3J5LiBUaGlzIG1lYW5zIHRoYXQgb25seSBoaWdoIG1lbW9yeQo+ID4g PiA+ID4gcmVxdWlyZXMgd3JpdGUgcHJvdGVjdGlvbiBiYXNlZCBvbiBwYWdlLWxldmVsIG1hcHBp bmcuIFRoZSBhbGxvY2F0aW9uIG9mCj4gPiA+ID4gPiBoaWdoIG1lbW9yeSBkb2VzIG5vdCBkZXBl bmQgb24gdGhlIERNQSBib3VuZGFyeS4gU28gd2UgY2FuIHJlc2VydmUgdGhlCj4gPiA+ID4gPiBo aWdoIG1lbW9yeSBmaXJzdCBldmVuIGlmIHRoZSBjcmFzaGtlcm5lbCByZXNlcnZhdGlvbiBpcyBk ZWZlcnJlZC4KPiA+ID4gPiA+IAo+ID4gPiA+ID4gVGhpcyBtZWFucyB0aGF0IHRoZSBibG9jayBt YXBwaW5nIGNhbiBzdGlsbCBiZSBwZXJmb3JtZWQgb24gb3RoZXIga2VybmVsCj4gPiA+ID4gPiBs aW5lYXIgYWRkcmVzcyBzcGFjZXMsIHRoZSBUTEIgbWlzcyByYXRlIGNhbiBiZSByZWR1Y2VkIGFu ZCB0aGUgc3lzdGVtCj4gPiA+ID4gPiBwZXJmb3JtYW5jZSB3aWxsIGJlIGltcHJvdmVkLgo+ID4g PiA+IFVnaCwgdGhpcyBsb29rcyBhIGxpdHRsZSB1Z2x5LCBob25lc3RseS4KPiA+ID4gPiAKPiA+ ID4gPiBJZiB0aGF0J3MgZm9yIHN1cmUgYXJtNjQgY2FuJ3Qgc3BsaXQgbGFyZ2UgcGFnZSBtYXBw aW5nIG9mIGxpbmVhcgo+ID4gPiA+IHJlZ2lvbiwgdGhpcyBwYXRjaCBpcyBvbmUgd2F5IHRvIG9w dGltaXplIGxpbmVhciBtYXBwaW5nLiBHaXZlbiBrZHVtcAo+ID4gPiA+IHNldHRpbmcgaXMgbmVj ZXNzYXJ5IG9uIGFybTY0IHNlcnZlciwgdGhlIGJvb3Rpbmcgc3BlZWQgaXMgdHJ1bHkKPiA+ID4g PiBpbXBhY3RlZCBoZWF2aWx5Lgo+ID4gPiBJcyB0aGVyZSBzb21lIGNvbmNsdXNpb24gb3IgZGlz Y3Vzc2lvbiB0aGF0IGFybTY0IGNhbid0IHNwbGl0IGxhcmdlIHBhZ2UKPiA+ID4gbWFwcGluZz8K PiA+ID4gCj4gPiA+IENvdWxkIHRoZSBjcmFzaGtlcm5lbCByZXNlcnZhdGlvbiAoYW5kIEtmZW5j ZSBwb29sKSBiZSBzcGxpdGVkIGR5bmFtaWNhbGx5Pwo+ID4gPiAKPiA+ID4gSSBmb3VuZCBNYXJr IHJlcGxheSAiYXJtNjQ6IHJlbW92ZSBwYWdlIGdyYW51bGFyaXR5IGxpbWl0YXRpb24gZnJvbQo+ ID4gPiBLRkVOQ0UiWzFdLAo+ID4gPiAKPiA+ID4gIMKgICJXZSBhbHNvIGF2b2lkIGxpdmUgY2hh bmdlcyBmcm9tIGJsb2NrPC0+dGFibGUgbWFwcGluZ3MsIHNpbmNlIHRoZQo+ID4gPiAgwqAgYXJj aHRpdGVjdHVyZSBnaXZlcyB1cyB2ZXJ5IHdlYWsgZ3VhcmFudGVlcyB0aGVyZSBhbmQgZ2VuZXJh bGx5IHJlcXVpcmVzCj4gPiA+ICDCoCBhIEJyZWFrLUJlZm9yZS1NYWtlIHNlcXVlbmNlICh0aG91 Z2ggSUlSQyB0aGlzIHdhcyB0aWdodGVuZWQgdXAKPiA+ID4gIMKgIHNvbWV3aGF0LCBzbyBtYXli ZSBnb2luZyBvbmUgd2F5IGlzIHN1cHBvc2VkIHRvIHdvcmspLiBVbmxlc3MgaXQncwo+ID4gPiAg wqAgcmVhbGx5IG5lY2Vzc2FyeSwgSSdkIHJhdGhlciBub3Qgc3BsaXQgdGhlc2UgYmxvY2sgbWFw cGluZ3Mgd2hpbGUKPiA+ID4gIMKgIHRoZXkncmUgbGl2ZS4iCj4gPiBUaGUgcHJvYmxlbSB3aXRo IHNwbGl0dGluZyBpcyB0aGF0IHlvdSBjYW4gZW5kIHVwIHdpdGggdHdvIGVudHJpZXMgaW4KPiA+ IHRoZSBUTEIgZm9yIHRoZSBzYW1lIFZBLT5QQSBtYXBwaW5nIChlLmcuIG9uZSBmb3IgYSA0S0Ig cGFnZSBhbmQgYW5vdGhlcgo+ID4gZm9yIGEgMk1CIGJsb2NrKS4gSW4gdGhlIGx1Y2t5IGNhc2Us IHRoZSBDUFUgd2lsbCB0cmlnZ2VyIGEgVExCIGNvbmZsaWN0Cj4gPiBhYm9ydCAoYnV0IGNhbiBi ZSB3b3JzZSBsaWtlIGxvc3Mgb2YgY29oZXJlbmN5KS4KPiBUaGFua3MgZm9yIHlvdXIgZXhwbGFu YXRpb27vvIwKPiA+IFByaW9yIHRvIEZFQVRfQkJNIChhZGRlZCBpbiBBUk12OC40KSwgc3VjaCBz Y2VuYXJpbyB3YXMgbm90IGFsbG93ZWQgYXQKPiA+IGFsbCwgdGhlIHNvZnR3YXJlIHdvdWxkIGhh dmUgdG8gdW5tYXAgdGhlIHJhbmdlLCBUTEJJLCByZW1hcC4gV2l0aAo+ID4gRkVBVF9CQk0gKGxl dmVsIDIpLCB3ZSBjYW4gZG8gdGhpcyB3aXRob3V0IHRlYXJpbmcgdGhlIG1hcHBpbmcgZG93biBi dXQKPiA+IHdlIHN0aWxsIG5lZWQgdG8gaGFuZGxlIHRoZSBwb3RlbnRpYWwgVExCIGNvbmZsaWN0 IGFib3J0LiBUaGUgaGFuZGxlcgo+ID4gb25seSBuZWVkcyBhIFRMQkkgYnV0IGlmIGl0IHRvdWNo ZXMgdGhlIG1lbW9yeSByYW5nZSBiZWluZyBjaGFuZ2VkIGl0Cj4gPiByaXNrcyBmYXVsdGluZyBh Z2Fpbi4gV2l0aCB2bWFwIHN0YWNrcyBhbmQgdGhlIGtlcm5lbCBpbWFnZSBtYXBwZWQgaW4KPiA+ IHRoZSB2bWFsbG9jIHNwYWNlLCB3ZSBoYXZlIGEgc21hbGwgd2luZG93IHdoZXJlIHRoaXMgY291 bGQgYmUgaGFuZGxlZAo+ID4gYnV0IHdlIHByb2JhYmx5IGNhbid0IGdvIGludG8gdGhlIEMgcGFy dCBvZiB0aGUgZXhjZXB0aW9uIGhhbmRsaW5nCj4gPiAodHJhY2luZyBldGMuIG1heSBhY2Nlc3Mg YSBrbWFsbG9jJ2VkIG9iamVjdCBmb3IgZXhhbXBsZSkuCj4gCj4gU28gaWYgd2l0aG91dCBGRUFU X0JCTe+8jHdlIGNhbiBvbmx5IGd1YXJhbnRlZSBCQk0gc2VxdWVuY2UgdmlhCj4gInVubWFwIHRo ZSByYW5nZSwgVExCSSwgcmVtYXAiIG9yIHRoZSBmb2xsb3dpbmcgb3B0aW9uLAoKWWVzLCB0aGF0 J3MgdGhlIGJyZWFrLWJlZm9yZS1tYWtlIHNlcXVlbmNlLgoKPiBhbmQgd2l0aCBGRUFUX0JCTSAo bGV2ZWwgMiksIHdlIGNvdWxkIGhhdmUgZWFzeSB3YXkgdG8gYXZvaWQgVExCCj4gY29uZmxpY3Qg Zm9yIHNvbWUgdm1hbGxvYyBzcGFjZSwgYnV0IHN0aWxsIGhhcmQgdG8gZGVhbCB3aXRoIG90aGVy Cj4gc2NlbmNlPwoKSXQncyBub3QgdG9vIGhhcmQgaW4gdGhlb3J5LiBCYXNpY2FsbHkgdGhlcmUn cyBhIHNtYWxsIHJpc2sgb2YgZ2V0dGluZyBhClRMQiBjb25mbGljdCBhYm9ydCBmb3IgdGhlIG1h cHBpbmdzIHlvdSBjaGFuZ2Ugd2l0aG91dCBhIEJCTSBzZXF1ZW5jZSAoSQp0aGluayBpdCdzIG5l YXJseSBub24tZXhpc3RlZCB3aGVuIGdvaW5nIGZyb20gbGFyZ2UgYmxvY2sgdG8gc21hbGxlcgpw YWdlcywgdGhvdWdoIHRoZSBhcmNoaXRlY3R1cmUgc3RhdGVzIHRoYXQgaXQncyBzdGlsbCBwb3Nz aWJsZSkuIFNpbmNlCndlIG9ubHkgd2FudCB0byBkbyB0aGlzIGZvciB0aGUgbGluZWFyIG1hcCBh bmQgdGhlIGtlcm5lbCBhbmQgc3RhY2sgYXJlCmluIHRoZSB2bWFsbG9jIHNwYWNlLCB3ZSBjYW4g aGFuZGxlIHN1Y2ggdHJhcCBhcyBhbiBzYWZldHkgbWVhc3VyZSAoaXQKanVzdCBuZWVkcyBhIFRM QkkpLiBJdCBtYXkgaGVscCB0byB0d2VhayBhIG1vZGVsIHRvIGZvcmNlIGl0IHRvIGdlbmVyYXRl CnN1Y2ggY29uZmxpY3QgYWJvcnRzLCBvdGhlcndpc2Ugd2UnZCBub3QgYmUgYWJsZSB0byB0ZXN0 IHRoZSBjb2RlLgoKSXQncyBwb3NzaWJsZSB0aGF0IHN1Y2ggdHJhcCBpcyByYWlzZWQgYXQgRUwy IGlmIGEgZ3Vlc3QgY2F1c2VkIHRoZQpjb25mbGljdCBhYm9ydCAodGhlIGFyY2hpdGVjdHVyZSBs ZWZ0IHRoaXMgYXMgSU1QIERFRikuIFRoZSBoeXBlcnZpc29ycwptYXkgbmVlZCB0byBiZSB0YXVn aHQgdG8gZG8gYSBUTEJJIFZNQUxMUzEyRTEgaW5zdGVhZCBvZiBraWxsaW5nIHRoZQpndWVzdC4g SSBoYXZlbid0IGNoZWNrZWQgd2hhdCBLVk0gZG9lcy4KCi0tIApDYXRhbGluCgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1h aWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xp c3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==