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Re: A comment about changing kernels
From: |
Bernhard Kauer |
Subject: |
Re: A comment about changing kernels |
Date: |
Tue, 1 Nov 2005 00:53:05 +0100 |
User-agent: |
Mutt/1.5.9i |
> It really was a bug, and it has nothing to do with the IPC path,
That's correct, it was a bug in the interrupt handler.
> The correct behavior was to save the segment selectors, and this adds
> about 20 cycles to the path.
I do not see a problem, if the IPC set the segment registers to default
values. See it as output values of this syscall.
Shortly spoken: a syscall can change every user register, an interrupt
has to change none of them.
Bernhard
- Re: A comment about changing kernels, (continued)
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/29
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/29
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/29
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/30
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/30
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/31
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/31
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/31
- Re: A comment about changing kernels, Espen Skoglund, 2005/10/31
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/31
- Re: A comment about changing kernels,
Bernhard Kauer <=
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/31
- Re: A comment about changing kernels, Neal H. Walfield, 2005/10/28
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/29
- Re: A comment about changing kernels, Matthieu Lemerre, 2005/10/29
- Re: A comment about changing kernels, Marcus Brinkmann, 2005/10/30
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/30
- Re: A comment about changing kernels, Espen Skoglund, 2005/10/31
- Re: A comment about changing kernels, Bernhard Kauer, 2005/10/31
- Re: A comment about changing kernels, Neal H. Walfield, 2005/10/31
- Re: A comment about changing kernels, Jonathan S. Shapiro, 2005/10/31