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Message-ID: <4972B6D9.4080101@kernel.org>
Date: Sun, 18 Jan 2009 13:58:01 +0900
From: Tejun Heo <tj@...nel.org>
To: Brian Gerst <brgerst@...il.com>
CC: Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/17] x86-64: Convert irqstacks to per-cpu
Hello,
Brian Gerst wrote:
> @@ -211,15 +211,13 @@ ENTRY(secondary_startup_64)
> * data area. Computing this requires two symbols - __per_cpu_load
> * and per_cpu__gdt_page. As linker can't do no such relocation, do
> * it by hand. As early_gdt_descr is manipulated by C code for
> - * secondary CPUs, this should be done only once for the boot CPU
> - * when early_gdt_descr_base contains zero.
> + * secondary CPUs, this should be done only once for the boot CPU.
> */
It would probably be nice to mention that it's calculating per cpu
load addresses for early access. The comment only refers to gdt_page
which is a bit misleading as it now also adjusts irqstackptr.
Also, as pda field name, irqstackptr might be fine but wouldn't it be
better to rename it to at least irq_stack_ptr as this change requires
touching every users anyway?
Thanks.
--
tejun
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