From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z7bQv-0007QX-Me for kexec@lists.infradead.org; Wed, 24 Jun 2015 03:33:06 +0000 Date: Wed, 24 Jun 2015 09:02:41 +0530 From: Pratyush Anand Subject: Re: [PATCH] makedumpfile: Support ARM64 Message-ID: <20150624033241.GA22348@localhost.localdomain> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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: Timur Tabi Cc: virajm@codeaurora.org, ats-kumagai@wm.jp.nec.com, asamson@codeaurora.org, kexec@lists.infradead.org Hi Timur, On 23/06/2015:06:19:01 PM, Timur Tabi wrote: > On Fri, May 15, 2015 at 1:30 PM, Pratyush Anand wrote: > > Patch adds support for ARM64 in makedumpfile. It takes care of vmalloc, > > vmemmap, module and directly map kernel memory region's translation. > > > > Currently we only support 2 leverl 64K pages and VA_BITS as 42. Support > > to find these machine specific parameters dynamically and then to act > > accordingly can be added latter. > > So ARM64 kernels are typically compiled with 3-level 4KB pages: > > CONFIG_ARM64_4K_PAGES=y > # CONFIG_ARM64_64K_PAGES is not set > CONFIG_ARM64_VA_BITS_39=y > # CONFIG_ARM64_VA_BITS_48 is not set > CONFIG_ARM64_VA_BITS=39 > > Does this mean that your patch won't work on such a kernel? If so, do Yes, it will not work with above kernel. > you have any plans to add support for 4K 3-level pages? I can try to find out some time in weekend to refactor arm64 code and then add 3 level, 4K support. May be I will need a Tested-by. ~Pratyush _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec