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Re: [Qemu-devel] [PATCH] [RFC] cleanup cpu-exec.c: consolidate handle_cp


From: Paul Brook
Subject: Re: [Qemu-devel] [PATCH] [RFC] cleanup cpu-exec.c: consolidate handle_cpu_signal
Date: Thu, 30 Apr 2009 17:10:38 +0100
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> I don't understand what the "activate soft MMU for this block" is trying
> to do.  (Especially since handle_cpu_signal and company are under
>  !defined(CONFIG_SOFTMMU)...)  Even though it appears that if
> cpu_*_handle_mmu_fault ever returns a value > 0, that value is always
> one and therefore that block is superfluous, I've left that cleanup for
> a later time.  Likewise for why x86 has a different EXCEPTION_ACTION
> than everyone else.

This is most likely a remnant of the long-deceased qemu-fast, which used mmap 
tricks to avoid MMU emulation in system mode.

Paul




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