From: "H. Peter Anvin" <hpa@zytor.com>
To: jerry.hoemann@hp.com
Cc: rob@landley.net, tglx@linutronix.de, mingo@redhat.com,
x86@kernel.org, matt.fleming@intel.com, yinghai@kernel.org,
penberg@kernel.org, akpm@linux-foundation.org,
linux-doc@vger.kernel.org, linux-efi@vger.kernel.org,
vgoyal@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] Early use of boot service memory
Date: Wed, 13 Nov 2013 16:05:50 -0800 [thread overview]
Message-ID: <528413DE.1090203@zytor.com> (raw)
In-Reply-To: <20131113235708.GC25344@anatevka.fc.hp.com>
On 11/13/2013 03:57 PM, jerry.hoemann@hp.com wrote:
>
> I think i can go to a date based black list, that removes the manual
> step. System running firmware before certain date assumes we need
> to do the work around. If firmware is newer than that date, we don't
> use the workaround. Blacklist overrides and allows current behavior
> for new firmware that is subsequently found to be broken and for
> which we can't convenience the manufacturer to fix.
>
No, we can't, at least not for now. We are continually finding new
platforms with the bug.
>
> I will still point out that as currently used, efi_reserve_boot_services
> is wrong. A work around for firmware bugs on one platform shouldn't be
> breaking platforms that don't have that bug. Its just much less likely
> to cause problems with higher crash kernel allocation.
>
It is wrong, yes, but it seems like a ubiquitous problem.
-hpa
next prev parent reply other threads:[~2013-11-14 0:06 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-12 2:15 Jerry Hoemann
2013-11-12 2:15 ` [PATCH 1/3] efi: " Jerry Hoemann
2013-11-12 2:15 ` [PATCH 2/3] x86: avoid efi_reserve_boot_services Jerry Hoemann
2013-11-12 2:15 ` [PATCH 3/3] x86, efi: Early use of boot service memory Jerry Hoemann
2013-11-12 10:37 ` [PATCH 0/3] " Pekka Enberg
2013-11-12 17:55 ` jerry.hoemann
2013-11-12 18:48 ` Pekka Enberg
2013-11-12 21:52 ` jerry.hoemann
2013-11-12 18:58 ` H. Peter Anvin
2013-11-13 22:45 ` jerry.hoemann
2013-11-13 22:49 ` H. Peter Anvin
2013-11-13 23:57 ` jerry.hoemann
2013-11-14 0:05 ` H. Peter Anvin [this message]
2013-11-14 1:40 ` jerry.hoemann
2014-08-01 9:54 ` Yuhong Bao
2013-11-14 8:24 ` Pekka Enberg
2013-11-14 18:04 ` jerry.hoemann
2013-11-14 18:44 ` Pekka Enberg
2013-11-14 18:45 ` H. Peter Anvin
2013-11-15 0:50 ` jerry.hoemann
2013-11-15 6:24 ` Ingo Molnar
2013-11-15 6:55 ` Yinghai Lu
2013-11-15 6:59 ` H. Peter Anvin
2013-11-15 14:07 ` Vivek Goyal
2013-11-15 17:33 ` Yinghai Lu
2013-11-15 17:40 ` H. Peter Anvin
2013-11-15 18:30 ` Vivek Goyal
2013-11-15 18:46 ` H. Peter Anvin
2013-11-15 19:16 ` H. Peter Anvin
2013-11-18 15:22 ` Vivek Goyal
2013-11-18 18:29 ` H. Peter Anvin
2013-11-18 18:52 ` Vivek Goyal
2013-11-19 1:32 ` H. Peter Anvin
2013-11-19 3:02 ` Yinghai Lu
2013-11-15 18:03 ` Vivek Goyal
2013-11-15 22:24 ` Yinghai Lu
2013-11-15 22:55 ` jerry.hoemann
2013-11-15 23:43 ` Yinghai Lu
2013-11-18 15:32 ` Vivek Goyal
2013-11-18 19:34 ` Yinghai Lu
2013-11-18 19:39 ` Vivek Goyal
2013-11-15 18:16 ` jerry.hoemann
2013-11-15 19:13 ` jerry.hoemann
2013-11-18 15:42 ` Vivek Goyal
2013-11-15 8:36 ` Pekka Enberg
2013-11-14 15:26 ` Vivek Goyal
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