Messages in this thread |  | | Date | Thu, 18 Oct 2012 08:01:28 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/4] x86/wakeup/sleep: Check whether the TSS GDT descriptor is empty before using it. |
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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.
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