From: Joerg Roedel <joro@8bytes.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Roedel, Joerg" <Joerg.Roedel@amd.com>,
Borislav Petkov <bp@amd64.org>, "mingo@elte.hu" <mingo@elte.hu>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"Herrmann3, Andreas" <Andreas.Herrmann3@amd.com>,
"Seidel, Conny" <Conny.Seidel@amd.com>,
"Sarathy, Bhavna" <Bhavna.Sarathy@amd.com>,
"greg@kroah.com" <greg@kroah.com>,
"x86@kernel.org" <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] x86-32: Fix crashes with CPU hotplug on AMD machines
Date: Thu, 12 Aug 2010 16:41:43 +0200 [thread overview]
Message-ID: <20100812144142.GY23755@8bytes.org> (raw)
In-Reply-To: <4C5AC736.20903@zytor.com>
On Thu, Aug 05, 2010 at 07:14:14AM -0700, H. Peter Anvin wrote:
> On 08/05/2010 12:45 AM, Roedel, Joerg wrote:
> Correct, again. It's unclear to me if we can get away with the very
> simple 64-bit approach -- in particular, not including all the 1:1
> mappings in the kernel -- for all future users, though.
Yeah, We could probably use the same symbol names for the trampoline and
the swapper page-table on 32 and 64 bit and merge the code that handles
it between the architectures. Shouldn't be too difficult. We cook
something up :-)
But do you mind to take this patch first? It fixes the occurence of an
erratum on AMD hardware, it is a quite simple fix compared to the rework
suggested. In fact, I would like to have a simple patch to fix the
problem first (and backport it as necessary) and then go the way to
rework the current code differences between 32 and 64 bit.
Joerg
next prev parent reply other threads:[~2010-08-12 14:41 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-04 16:45 [PATCH 0/2] Fix 32-bit CPU hotplug issue on AMD Borislav Petkov
2010-08-04 16:45 ` [PATCH 1/2] x86-32: Fix crashes with CPU hotplug on AMD machines Borislav Petkov
2010-08-04 23:05 ` H. Peter Anvin
2010-08-05 4:48 ` Borislav Petkov
2010-08-05 7:45 ` Roedel, Joerg
2010-08-05 14:14 ` H. Peter Anvin
2010-08-12 14:41 ` Joerg Roedel [this message]
2010-08-12 15:34 ` H. Peter Anvin
2010-08-12 15:47 ` Borislav Petkov
2010-08-12 15:47 ` H. Peter Anvin
2010-08-12 17:38 ` Borislav Petkov
2010-08-24 7:33 ` Initial working version (Re: [PATCH 1/2] x86-32: Fix crashes with CPU hotplug on AMD machines) Borislav Petkov
2010-08-29 20:32 ` [PATCH] x86-32, mm: Add an initial page table for core bootstrapping Borislav Petkov
2010-09-02 9:10 ` [PATCH -v1.1] " Borislav Petkov
2010-08-12 17:06 ` [PATCH 1/2] x86-32: Fix crashes with CPU hotplug on AMD machines Joerg Roedel
2010-08-12 19:01 ` H. Peter Anvin
2010-08-12 19:04 ` Joerg Roedel
2010-08-13 12:35 ` Borislav Petkov
2010-08-16 12:19 ` Borislav Petkov
2010-08-16 12:38 ` [PATCH -v2 " Borislav Petkov
2010-08-18 18:41 ` H. Peter Anvin
2010-08-18 19:09 ` Borislav Petkov
2010-08-18 20:55 ` [tip:x86/urgent] x86-32: Fix dummy trampoline-related inline stubs tip-bot for H. Peter Anvin
2010-08-18 20:55 ` [tip:x86/urgent] x86-32: Separate 1:1 pagetables from swapper_pg_dir tip-bot for Joerg Roedel
2010-08-16 12:39 ` [PATCH -v2 2/2] x86, cpu hotplug: Fix cpu bringup concurrency issue Borislav Petkov
2010-08-18 19:03 ` H. Peter Anvin
2010-08-18 19:28 ` Borislav Petkov
2010-08-18 20:04 ` H. Peter Anvin
2010-08-19 18:10 ` [PATCH -v2.1 " Borislav Petkov
2010-08-19 22:58 ` [tip:x86/urgent] x86, hotplug: Serialize CPU hotplug to avoid bringup concurrency issues tip-bot for Borislav Petkov
2010-08-04 16:45 ` [PATCH 2/2] x86, cpu hotplug: Fix cpu bringup concurrency issue Borislav Petkov
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