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does the SAVE_ALL nesting in kernel?

To: linux-mips <linux-mips@linux-mips.org>
Subject: does the SAVE_ALL nesting in kernel?
From: zhuzhenhua <zzh.hust@gmail.com>
Date: Wed, 12 Sep 2007 10:21:53 +0800
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hello, all
            i have a mips board,  and the SDRAM speed(bus clock) is not too fast.
             so i want change  the SAVE_ALL and RESTORE_ALL to use internal-ram(high speed).
            i just wonder whether the SAVE_ALL netsting in kernel  for mips arch?
            if not, i think  maybe 1k byte for SAVE_ALL is enough( 32regs X4, and some cp0_regs).
            but if  the SAVE_ALL nesting, maybe i need to keep a stack in internal-ram.
            thanks for any hints.

Best Regards

--
zzh

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