From: joeyli <jlee@suse.com>
To: Matthew Garrett <matthew.garrett@nebula.com>
Cc: Matt Fleming <matt@console-pimps.org>,
"Fleming, Matt" <matt.fleming@intel.com>,
"rja@sgi.com" <rja@sgi.com>,
"mingo@kernel.org" <mingo@kernel.org>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
"bp@alien8.de" <bp@alien8.de>,
"jkosina@suse.cz" <jkosina@suse.cz>,
"linux-efi@vger.kernel.org" <linux-efi@vger.kernel.org>,
"x86@kernel.org" <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"hpa@linux.intel.com" <hpa@linux.intel.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"oneukum@suse.de" <oneukum@suse.de>
Subject: Re: [PATCH] Modify UEFI anti-bricking code
Date: Thu, 06 Jun 2013 10:24:20 +0800 [thread overview]
Message-ID: <1370485460.6523.30.camel@linux-s257.site> (raw)
In-Reply-To: <1370448519.6315.36.camel@x230.lan>
於 三，2013-06-05 於 16:08 +0000，Matthew Garrett 提到：
> On Wed, 2013-06-05 at 16:59 +0100, Matt Fleming wrote:
>
> > + /* clean DUMMY object */
> > + efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, 0, 0, NULL);
>
> Hm. Actually, is that going to work? From the spec:
>
The patch I tested on OVMF, it can delete DUMMY object when system boot.
> If a preexisting variable is rewritten with different attributes,
> SetVariable()shall not modify the variable and shall return
> EFI_INVALID_PARAMETER.
>
> So I think we probably need to fix the attributes to NV|RT|BS for both
> this call and the one in query_variable_store. We should probably also
> only do the workaround if the NV bit is set in the original query.
>
> --
> Matthew Garrett | mjg59@srcf.ucam.org
Yes, I think that more safe for fix the attributes.
Thanks a lot!
Joey Lee
next prev parent reply other threads:[~2013-06-06 2:25 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-01 20:06 Matthew Garrett
2013-06-02 15:48 ` Russ Anderson
2013-06-03 12:17 ` Matt Fleming
2013-06-03 14:58 ` Matthew Garrett
2013-06-03 16:13 ` joeyli
2013-06-03 16:31 ` Matthew Garrett
2013-06-04 3:35 ` joeyli
2013-06-05 14:49 ` Fleming, Matt
2013-06-05 14:53 ` Matthew Garrett
2013-06-05 15:59 ` Matt Fleming
2013-06-05 16:08 ` Matthew Garrett
2013-06-05 19:59 ` Matt Fleming
2013-06-06 2:24 ` joeyli [this message]
2013-06-05 20:19 ` H. Peter Anvin
2013-06-06 5:05 ` joeyli
2013-06-06 5:41 ` joeyli
2013-06-06 5:42 ` Matthew Garrett
2013-06-06 7:40 ` joeyli
2013-06-06 9:25 ` Matt Fleming
2013-06-06 14:48 ` Russ Anderson
2013-06-06 15:00 ` Matt Fleming
2013-06-06 15:28 ` Russ Anderson
2013-06-10 18:54 ` Russ Anderson
2013-06-04 5:29 ` Lingzhu Xiang
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