From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.skyhub.de ([5.9.137.197]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hHRod-0000oQ-Io for kexec@lists.infradead.org; Fri, 19 Apr 2019 11:36:24 +0000 Date: Fri, 19 Apr 2019 13:36:21 +0200 From: Borislav Petkov Subject: Re: [RFC PATCH] kexec, x86/boot: map systab region in identity mapping before accessing it Message-ID: <20190419113621.GD10324@zn.tnic> References: <20190419101733.GA10324@zn.tnic> <20190419105014.GE11060@MiWiFi-R3L-srv> <20190419112801.GB10324@zn.tnic> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190419112801.GB10324@zn.tnic> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Baoquan He Cc: "x86@kernel.org" , Kairui Song , Chao Fan , "kexec@lists.infradead.org" , linux-kernel@vger.kernel.org, Junichi Nomura , Thomas Gleixner , Dave Young On Fri, Apr 19, 2019 at 01:28:01PM +0200, Borislav Petkov wrote: > Read again what I said: "should all be passed through boot_params". > Which means, boot_params should be extended with a field of a flag to > say: "this is a kexec'ed kernel". And by that I mean similar to the XLF_EFI_KEXEC mechanism. The first kernel or kexec(1) should prepare the info needed by the kexec'ed kernel. -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec