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From: Ralf Baechle <ralf@oss.sgi.com>
To: machael thailer <dony.he@huawei.com>
Cc: linux-mips@oss.sgi.com
Subject: Re: questions about eret....
Date: Tue, 21 Aug 2001 13:17:21 +0200	[thread overview]
Message-ID: <20010821131721.F13302@dea.linux-mips.net> (raw)
In-Reply-To: <001201c12a29$57f3b660$8021690a@huawei.com>; from dony.he@huawei.com on Tue, Aug 21, 2001 at 06:09:19PM +0800

On Tue, Aug 21, 2001 at 06:09:19PM +0800, machael thailer wrote:

> Yes.
> But in the sourece codes, when we finish the exception handlers , we will
> run "ret_from_irq" (ret_from_sys_call) in the entry.S and then run macro
> "RESTORE_ALL_AND_RET".  The macro does restore all registers and then ERET.
> But there is not a "CLI" just before ERET as the user manual suggested. Why?
> so when we handle a syscall exception, we do "STI" in the handle_sys(). and
> when ret_from_sys_call and we will run this macro "RESTORE_ALL_AND_RET".
> because there is not a "CLI" just before ERET , is it possible to have some
> problems?

Look again.

  Ralf

  parent reply	other threads:[~2001-08-21 11:19 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-08-15  1:30 Virtual address to physical address mapping machael thailer
2001-08-15  1:30 ` machael thailer
2001-08-15  8:33 ` Ralf Baechle
2001-08-20  9:54   ` questions about eret machael thailer
2001-08-20  9:54     ` machael thailer
2001-08-20 21:07     ` Ralf Baechle
2001-08-21  1:06       ` machael thailer
2001-08-21  1:06         ` machael thailer
2001-08-21  6:35         ` Ralf Baechle
2001-08-21 10:09           ` machael thailer
2001-08-21 10:09             ` machael thailer
2001-08-21 11:17             ` Ralf Baechle [this message]
2001-08-21 15:17               ` Question on porting Linux Shuanglin Wang
2001-08-21 14:33                 ` jeff_lee
2001-08-21 14:33                   ` jeff_lee
2001-08-21 15:33                   ` Shuanglin Wang
2001-08-21 17:26                 ` Jun Sun
2001-08-21 20:26                 ` Carsten Langgaard
2001-08-21 21:36                   ` Shuanglin Wang
2001-08-22  9:58                     ` Carsten Langgaard
2001-08-21  1:34       ` questions about some bits of STATUS register and exception priority machael thailer
2001-08-21  1:34         ` machael thailer
2001-08-21  6:53         ` Ralf Baechle
2001-08-21 10:53           ` machael thailer
2001-08-21 10:53             ` machael thailer
2001-08-21 11:14             ` Ralf Baechle

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