From: "H. Peter Anvin" <hpa@zytor.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com,
lenb@kernel.org, linux-acpi@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH 1/4] x86/wakeup/sleep: Check whether the TSS GDT descriptor is empty before using it.
Date: Thu, 18 Oct 2012 08:01:28 -0700 [thread overview]
Message-ID: <508019C8.4030902@zytor.com> (raw)
In-Reply-To: <20121018144709.GB19782@localhost.localdomain>
On 10/18/2012 07:47 AM, Konrad Rzeszutek Wilk wrote:
>>
>> Why is this patch necessary? Presumably there is something further
>> down the line which depends on the TSS descriptor being empty, but
>> if so, what?
>
> I could not find it. This write has been in the code since the initial
> git history. Is the pre-git bitkeeper tree somewhere available?
I didn't ask why the write was necessary, but why you need it to be
conditional.
I know why the write is necessary: it is (presumably) there to clear the
TSS busy bit.
However, as for older records:
-bk era history (2.5.0-2.6.12-rc2):
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git
Ancient history (pre-2.4.0):
git://git.kernel.org/pub/scm/linux/kernel/git/davej/history.git
There doesn't seem to be any git trees known for the bridge between
2.4.0 and 2.5.0.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-10-18 15:01 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 13:49 [RFC] ACPI S3 and Xen (suprisingly small\!) Konrad Rzeszutek Wilk
2012-10-17 13:49 ` [PATCH 1/4] x86/wakeup/sleep: Check whether the TSS GDT descriptor is empty before using it Konrad Rzeszutek Wilk
2012-10-18 0:03 ` H. Peter Anvin
2012-10-18 14:47 ` Konrad Rzeszutek Wilk
2012-10-18 15:01 ` H. Peter Anvin [this message]
2013-01-17 14:41 ` Konrad Rzeszutek Wilk
2012-10-17 13:49 ` [PATCH 2/4] xen/lowlevel: Implement pvop call for load_idt (sidt) Konrad Rzeszutek Wilk
2012-10-17 23:51 ` H. Peter Anvin
2012-10-18 14:45 ` Konrad Rzeszutek Wilk
2012-10-18 15:02 ` H. Peter Anvin
2013-01-17 14:36 ` Konrad Rzeszutek Wilk
2012-10-17 13:49 ` [PATCH 3/4] xen/lowlevel: Implement pvop call for store_gdt (gidt) Konrad Rzeszutek Wilk
2012-10-17 13:49 ` [PATCH 4/4] xen/acpi: Prep saved_context cr3 values Konrad Rzeszutek Wilk
2013-01-17 14:48 ` Konrad Rzeszutek Wilk
2012-10-17 16:03 ` [RFC] ACPI S3 and Xen (suprisingly small\!) H. Peter Anvin
2012-10-17 16:10 ` Is: axe read_tscp pvops call. Was: " Konrad Rzeszutek Wilk
2012-10-17 16:39 ` Konrad Rzeszutek Wilk
2012-10-17 16:54 ` H. Peter Anvin
2012-10-17 16:50 ` H. Peter Anvin
2012-10-17 16:54 ` Konrad Rzeszutek Wilk
2012-10-17 17:35 ` H. Peter Anvin
2012-10-18 15:22 ` [Xen-devel] " Dan Magenheimer
2012-10-18 15:28 ` H. Peter Anvin
2012-10-18 15:56 ` Dan Magenheimer
2012-10-18 16:17 ` Borislav Petkov
2012-10-18 16:44 ` Stefano Stabellini
2012-10-18 17:04 ` H. Peter Anvin
2012-10-18 16:37 ` H. Peter Anvin
2012-10-19 15:48 ` Is: Xen architecture document. Was: " Konrad Rzeszutek Wilk
2012-10-19 17:45 ` H. Peter Anvin
2012-10-18 16:31 ` David Vrabel
2012-10-18 16:31 ` David Vrabel
2012-10-18 17:42 ` Konrad Rzeszutek Wilk
2012-10-18 18:02 ` David Vrabel
2012-10-17 17:46 ` Ben Guthro
2012-10-17 17:43 ` Konrad Rzeszutek Wilk
2012-10-17 18:00 ` Ben Guthro
2012-10-19 18:49 ` Konrad Rzeszutek Wilk
2012-10-20 1:23 ` Ben Guthro
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