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 19:06:44 +0200 [thread overview]
Message-ID: <20100812170644.GZ23755@8bytes.org> (raw)
In-Reply-To: <4C64148D.5080305@zytor.com>
On Thu, Aug 12, 2010 at 08:34:37AM -0700, H. Peter Anvin wrote:
> Agreed. I do have a concern about the kernel page tables not being
> synchronized into trampoline_pg_dir (it's only an issue for 32-bit
> !PAE), so at the very least we need to keep an eye out for it...
Great.
The synchronization problem might be real. The cpu_init function uses
per-cpu variables which might not be present in the early synced
tramponline page table (iirc). The change to swapper_pg_dir and the
global tlb flush should probably be moved to the very beginning of the
start_secondary function.
Joerg
next prev parent reply other threads:[~2010-08-12 17:06 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
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 ` Joerg Roedel [this message]
2010-08-12 19:01 ` [PATCH 1/2] x86-32: Fix crashes with CPU hotplug on AMD machines 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100812170644.GZ23755@8bytes.org \
--to=joro@8bytes.org \
--cc=Andreas.Herrmann3@amd.com \
--cc=Bhavna.Sarathy@amd.com \
--cc=Conny.Seidel@amd.com \
--cc=Joerg.Roedel@amd.com \
--cc=bp@amd64.org \
--cc=greg@kroah.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).