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 1YqDpY-0001yL-7I for kexec@lists.infradead.org; Thu, 07 May 2015 04:54:41 +0000 Message-ID: <554AEFF7.5070300@redhat.com> Date: Thu, 07 May 2015 10:24:15 +0530 From: Pratyush Anand MIME-Version: 1.0 Subject: Re: [PATCH RFC 0/3] arm64: disable/enable d-cache support for References: <1430931959.12082.12.camel@infradead.org> <554A5151.7020706@redhat.com> <554AE924.4040208@linaro.org> In-Reply-To: <554AE924.4040208@linaro.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: AKASHI Takahiro , Geoff Levand Cc: kexec@lists.infradead.org On Thursday 07 May 2015 09:55 AM, AKASHI Takahiro wrote: > Geoff, Pratyush > > On 05/07/2015 02:37 AM, Pratyush Anand wrote: >> Hi Geoff, >> >> On Wednesday 06 May 2015 10:35 PM, Geoff Levand wrote: >>> Your 2 minutes seems like a long time. Is this seen on other platforms? >> >> At least it is seen on two different HW platforms I had tested with. I >> do not know about other. >> >> It would be nice if somebody else who is using kexec on HW platform >> can report their execution time. > > On my HW, it took about 42secs before showing extra boot messages after > "I'm in purgatory." > It would also depend on the size of different segments (mainly kernel and initrd) on which sha256 is calculated. What are the size of binaries in your case? In my case: segment[0].memsz = 0x10e0000 // kernel segment[1].memsz = 0x1910000 // initrd segment[2].memsz = 0x10000 // dtb segment[3].memsz = 0x40000 // purgatory, not included in sha256 segment[4].memsz = 0x10000 // elf core hdr @Geoff: Do you see any specific side effect for enabling D-cache in purgatory, other than the fact that it increases size of purgatory? May be we can keep an user option to select/not select d-cache enabling. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec