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From: Borislav Petkov <bp@alien8.de>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: mjg59@srcf.ucam.org, bhe@redhat.com, jkosina@suse.cz,
	greg@kroah.com, kexec@lists.infradead.org,
	linux-kernel@vger.kernel.org, ebiederm@xmission.com,
	hpa@zytor.com, akpm@linux-foundation.org, dyoung@redhat.com,
	chaowang@redhat.com
Subject: Re: [PATCH 11/13] kexec-bzImage: Support for loading bzImage using 64bit entry
Date: Mon, 16 Jun 2014 23:27:20 +0200	[thread overview]
Message-ID: <20140616212720.GL8170@pd.tnic> (raw)
In-Reply-To: <20140616211500.GA1870@redhat.com>

On Mon, Jun 16, 2014 at 05:15:00PM -0400, Vivek Goyal wrote:
> Do we want to show all the rejection messages from bzImage64 and
> bzImage32 loaders. It might be too verbose to show users that before
> vmlinux loader accepted the image other loaders on this arches rejcted
> the image.

I get all that. But, if people want to get feedback from the system
about *why* their image didn't load, they absolutely have to enable
dynamic debug. And this is not optimal IMO because they will have to
look at the code first to see what they need to do.

Or is kexec-tools going to be taught to interpret return values from the
syscall?

In any case, we want information about why an image fails loading to
reach the user in the easiest way possible. And why should the user need
to enable dynamic debug if he can get the info without doing so?

Oh, and not everyone knows about dynamic debug so...

And I don't think it'll be too much info - only the line which fails
the check will be printed before the image loader fails so that's
practically one error reason per failed image.

Ok?

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--

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  reply	other threads:[~2014-06-16 21:27 UTC|newest]

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-03 13:06 [RFC PATCH 00/13][V3] kexec: A new system call to allow in kernel loading Vivek Goyal
2014-06-03 13:06 ` [PATCH 01/13] bin2c: Move bin2c in scripts/basic Vivek Goyal
2014-06-03 16:01   ` Borislav Petkov
2014-06-03 17:13     ` Vivek Goyal
2014-06-03 13:06 ` [PATCH 02/13] kernel: Build bin2c based on config option CONFIG_BUILD_BIN2C Vivek Goyal
2014-06-04  9:13   ` Borislav Petkov
2014-06-03 13:06 ` [PATCH 03/13] kexec: Move segment verification code in a separate function Vivek Goyal
2014-06-04  9:32   ` Borislav Petkov
2014-06-04 18:47     ` Vivek Goyal
2014-06-04 20:30       ` Borislav Petkov
2014-06-05 14:05         ` Vivek Goyal
2014-06-05 14:07           ` Borislav Petkov
2014-06-03 13:06 ` [PATCH 04/13] resource: Provide new functions to walk through resources Vivek Goyal
2014-06-04 10:24   ` Borislav Petkov
2014-06-05 13:58     ` Vivek Goyal
2014-06-03 13:06 ` [PATCH 05/13] kexec: Make kexec_segment user buffer pointer a union Vivek Goyal
2014-06-04 10:34   ` Borislav Petkov
2014-06-03 13:06 ` [PATCH 06/13] kexec: New syscall kexec_file_load() declaration Vivek Goyal
2014-06-04 15:18   ` Borislav Petkov
2014-06-05  9:56   ` WANG Chao
2014-06-05 15:16     ` Vivek Goyal
2014-06-05 15:22       ` Vivek Goyal
2014-06-06  6:34         ` WANG Chao
2014-06-03 13:06 ` [PATCH 07/13] kexec: Implementation of new syscall kexec_file_load Vivek Goyal
2014-06-05 11:15   ` Borislav Petkov
2014-06-05 20:17     ` Vivek Goyal
2014-06-06  2:11       ` Borislav Petkov
2014-06-06 18:02         ` Vivek Goyal
2014-06-11 14:13           ` Borislav Petkov
2014-06-11 17:04             ` Vivek Goyal
2014-06-06  6:56   ` WANG Chao
2014-06-06 18:19     ` Vivek Goyal
2014-06-09  2:11       ` Dave Young
2014-06-09  5:35         ` WANG Chao
2014-06-09 15:41           ` Vivek Goyal
2014-06-13  7:50             ` Borislav Petkov
2014-06-13  8:00               ` WANG Chao
2014-06-13  8:10                 ` Borislav Petkov
2014-06-13  8:24                   ` WANG Chao
2014-06-13  8:30                     ` Borislav Petkov
2014-06-13 12:49                 ` Vivek Goyal
2014-06-13 12:46               ` Vivek Goyal
2014-06-13 15:36                 ` Borislav Petkov
2014-06-16 17:38                   ` Vivek Goyal
2014-06-16 20:05                     ` Borislav Petkov
2014-06-16 20:53                       ` Vivek Goyal
2014-06-16 21:09                         ` Borislav Petkov
2014-06-16 21:25                           ` H. Peter Anvin
2014-06-16 21:43                             ` Vivek Goyal
2014-06-16 22:10                               ` Borislav Petkov
2014-06-16 22:49                               ` H. Peter Anvin
2014-06-09 15:30         ` Vivek Goyal
2014-06-03 13:06 ` [PATCH 08/13] purgatory/sha256: Provide implementation of sha256 in purgaotory context Vivek Goyal
2014-06-03 13:06 ` [PATCH 09/13] purgatory: Core purgatory functionality Vivek Goyal
2014-06-05 20:05   ` Borislav Petkov
2014-06-06 19:51     ` Vivek Goyal
2014-06-13 10:17       ` Borislav Petkov
2014-06-16 17:25         ` Vivek Goyal
2014-06-16 20:10           ` Borislav Petkov
2014-06-03 13:06 ` [PATCH 10/13] kexec: Load and Relocate purgatory at kernel load time Vivek Goyal
2014-06-10 16:31   ` Borislav Petkov
2014-06-11 19:24     ` Vivek Goyal
2014-06-13 16:14       ` Borislav Petkov
2014-06-03 13:07 ` [PATCH 11/13] kexec-bzImage: Support for loading bzImage using 64bit entry Vivek Goyal
2014-06-15 16:35   ` Borislav Petkov
2014-06-15 16:56     ` H. Peter Anvin
2014-06-16 20:06     ` Vivek Goyal
2014-06-16 20:57       ` Borislav Petkov
2014-06-16 21:15         ` Vivek Goyal
2014-06-16 21:27           ` Borislav Petkov [this message]
2014-06-16 21:45             ` Vivek Goyal
2014-06-24 17:31     ` Vivek Goyal
2014-06-24 18:23       ` Borislav Petkov
2014-06-03 13:07 ` [PATCH 12/13] kexec: Support for Kexec on panic using new system call Vivek Goyal
2014-06-17 21:43   ` Borislav Petkov
2014-06-18 14:20     ` Vivek Goyal
2014-06-03 13:07 ` [PATCH 13/13] kexec: Support kexec/kdump on EFI systems Vivek Goyal
2014-06-18 15:43   ` Borislav Petkov
2014-06-18 16:06   ` Borislav Petkov
2014-06-18 17:39     ` Vivek Goyal
2014-06-03 13:12 ` [RFC PATCH 00/13][V3] kexec: A new system call to allow in kernel loading Vivek Goyal
2014-06-04  9:22   ` WANG Chao
2014-06-04 17:50     ` Vivek Goyal
2014-06-04 19:39       ` Michael Kerrisk
2014-06-05 14:04         ` Vivek Goyal
2014-06-06  5:45           ` Michael Kerrisk (man-pages)
2014-06-06 18:04             ` Vivek Goyal
2014-06-05  8:31   ` Dave Young
2014-06-05 15:01     ` Vivek Goyal
2014-06-06  7:37       ` Dave Young
2014-06-06 20:04         ` Vivek Goyal
2014-06-09  1:57           ` Dave Young
2014-06-06 20:37         ` H. Peter Anvin
2014-06-06 20:58           ` Matt Fleming
2014-06-06 21:00             ` H. Peter Anvin
2014-06-06 21:02               ` Matt Fleming
2014-06-12  5:42 ` Dave Young
2014-06-12 12:36   ` Vivek Goyal
2014-06-17 14:24   ` Vivek Goyal
2014-06-18  1:45     ` Dave Young
2014-06-18  1:52       ` Dave Young
2014-06-18 12:40         ` Vivek Goyal
2014-06-16 21:13 ` Borislav Petkov
2014-06-17 13:24   ` Vivek Goyal

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