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From: Laszlo Ersek <lersek@redhat.com>
To: Matt Fleming <matt@console-pimps.org>, Borislav Petkov <bp@alien8.de>
Cc: Dave Young <dyoung@redhat.com>,
linux-efi <linux-efi@vger.kernel.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Matt Fleming <matt.fleming@intel.com>,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: Shorten efi regions output
Date: Mon, 05 Jan 2015 16:00:51 +0100 [thread overview]
Message-ID: <54AAA723.1070605@redhat.com> (raw)
In-Reply-To: <20150105140332.GB3163@console-pimps.org>
On 01/05/15 15:03, Matt Fleming wrote:
> On Wed, 10 Dec, at 11:46:28AM, Borislav Petkov wrote:
>> On Wed, Dec 10, 2014 at 10:17:41AM +0800, Dave Young wrote:
>>> I have same feeling with you, it is too long for most of people.
>>>
>>> Since the printk code are for EFI_DEBUG, they are around the #ifdef
>>> so I would like to see a kernel param like efi_debug=on, so only
>>> efi_debug is specified then these verbose messages are printed.
>>> Without the param kernel can print some basic infomation about the
>>> memory ranges.
>>>
>>> In arm64 code there's already a uefi_debug param it can be moved to
>>> general code so that there will be a goable switch.
>>
>> Hmm, makes sense to me. Maybe we should really hide those behind a
>> debug switch, the question is whether asking the user to boot with
>> "efi_debug=on" in order to see the regions is ok. And I think it is ok
>> because we do that when debugging other stuff so I don't see anything
>> different here.
>>
>> And then when they're disabled by default, we don't really need to
>> shorten them as they're pure debug output then.
>>
>> Matt?
>
> I'm fine with disabling the EFI memory output regions by default.
>
> Printing the regions is still useful for debugging, but like you
> mention, we frequently ask users to enable other debug options when
> tracking down issues.
>
> Laszlo, would you be OK with that?
Sure.
Thanks
Laszlo
next prev parent reply other threads:[~2015-01-05 15:01 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-09 9:58 Borislav Petkov
2014-12-09 12:42 ` Ard Biesheuvel
2014-12-09 12:48 ` Borislav Petkov
2014-12-09 15:35 ` Laszlo Ersek
2014-12-09 16:45 ` Borislav Petkov
2014-12-10 2:17 ` Dave Young
2014-12-10 10:46 ` Borislav Petkov
2015-01-05 14:03 ` Matt Fleming
2015-01-05 15:00 ` Laszlo Ersek [this message]
2015-01-21 5:48 ` Jon Masters
2015-01-21 10:06 ` Borislav Petkov
2015-01-26 10:49 ` Matt Fleming
2015-01-30 16:43 ` [PATCH] efi, x86: Add a "debug" option to the efi= cmdline Borislav Petkov
2015-01-30 16:58 ` Laszlo Ersek
2015-01-30 18:06 ` Randy Dunlap
2015-01-30 21:17 ` Borislav Petkov
2015-02-04 12:18 ` Parmeshwr Prasad
2015-02-05 3:18 ` Dave Young
2015-02-05 8:11 ` Borislav Petkov
2015-02-05 8:41 ` Dave Young
2015-02-05 10:44 ` [PATCH v2] " Borislav Petkov
2015-02-05 12:45 ` Parmeshwr Prasad
2015-02-05 14:28 ` Borislav Petkov
2015-02-06 6:00 ` Parmeshwr Prasad
2015-02-06 10:49 ` Borislav Petkov
2015-02-24 22:33 ` Matt Fleming
2015-04-02 12:27 ` [tip:core/efi] x86/efi: " tip-bot for Borislav Petkov
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